Spring-shaped filtration device and liquid filtration method

Abstract

To provide a spring-shaped filtration device and a liquid filtration method where the filtration of impurities and the like dissolved in a liquid can be efficiently performed.SOLUTION: A spring-shaped filtration device 1 includes: a housing 2; a filtration agent 3 filled in the housing; a spring-shaped filter 5 for supplying inserted in the housing as a supply pipe for supplying a treatment object liquid into the housing; and a spring-shaped filter 4 for liquid collection inserted as a liquid collection pipe for collecting a treatment object liquid from the housing and discharging the treatment object liquid to the outside of the housing. In a liquid filtration method of the spring-shaped filtration device, the treatment object liquid is supplied from the spring-shaped filter for supplying into the housing and collecting the clarified treatment object liquid from the spring-shaped filter for liquid collection and discharging the clarified treatment object liquid to the outside of the housing.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a spring-shaped filtering device and a liquid filtering method.

Background Art

[0002] When impurities are mixed in a liquid such as water, it is common to use a filtering device to filter the impurities. Various structures of filtering devices have been studied. For example, Patent Document 1 below describes a technique related to a filtering device using a spring-shaped filter.

[0003] A filtering device using a spring-shaped filter installs the spring-shaped filter in a housing, and while passing water outside the spring-shaped filter, arranges a filtering agent around the spring-shaped filter, so that filtration can be performed using the gaps between the wires and between the filtering agents in the spring-shaped filter. This filtering device has an advantage that, unlike a general filtering device using filter paper or the like, it can be easily recycled by applying the function of a spring.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, although the technique described in Patent Document 1 above is effective for impurities that are not dissolved in the liquid, problems still remain for impurities dissolved in the liquid and the like.

[0006] Furthermore, the spring-shaped filter described above filters by arranging a filter medium around it. The thickness of this filter medium affects the filtration performance. While increasing the thickness of the filter medium can improve filtration performance, this requires increasing the force of water flowing through the inside of the spring-shaped filter, which leaves challenges in terms of efficiency.

[0007] Therefore, in view of the above problems, the present invention aims to provide a spring-type filtration device and a liquid filtration method that enable more efficient filtration. [Means for solving the problem]

[0008] A spring-shaped filtration device according to one aspect of the present invention, which solves the above problems, comprises a housing, a filter material filled inside the housing, a supply spring-shaped filter inserted as a supply pipe for supplying a liquid to be processed into the housing, and a collection spring-shaped filter inserted as a collection pipe for collecting the liquid to be processed from inside the housing and discharging it outside the housing.

[0009] Furthermore, although not limited to this viewpoint, it is preferable that multiple spring-shaped filters for liquid collection are provided, and that these multiple supply spring-shaped filters are arranged surrounding or opposite the spring-shaped filters for liquid collection.

[0010] Furthermore, although not limited to this viewpoint, it is preferable that the supply spring filter is inserted into the housing from the lower vertical side, and the liquid collection spring filter is inserted into the housing from the upper vertical side.

[0011] Furthermore, although not limited to this viewpoint, it is preferable that the spring-shaped filter for collecting liquid is longer than the spring-shaped filter for supplying liquid.

[0012] Furthermore, from this perspective, the housing has a cross-section that is approximately circular or angular in shape when measured from a plane perpendicular to the vertical direction, although it is not limited to this, but it is preferable to arrange a liquid collection spring-shaped filter near the center and arrange multiple supply spring-shaped filters around or near this liquid collection spring-shaped filter.

[0013] Furthermore, although not limited to this viewpoint, the housing preferably comprises a cylindrical member, a first lid member and a second lid member covering a pair of openings of the cylindrical member, a first cover covering the first lid and having a supply pipe connection port, and a second cover covering the second lid and having a liquid collection pipe connection port, wherein a supply spring-shaped filter is supported through the first lid member and a liquid collection spring-shaped filter is supported through the second lid member.

[0014] Furthermore, although not limited to this viewpoint, the filter agent is preferably an adsorbent for radioactive materials or dissolved substances.

[0015] Furthermore, although not limited to this viewpoint, it is preferable that the housing can be divided into multiple housing sections, with a supply spring-shaped filter inserted into one housing section and a liquid collection spring-shaped filter inserted into the other housing section.

[0016] Furthermore, although not limited to this viewpoint, it is preferable to provide a lid member that covers the opening area of ​​the housing when the housing is divided into housing sections.

[0017] Furthermore, a liquid filtration method according to another aspect of the present invention is a filtration method using a spring-shaped filtration device comprising a housing, a filter agent filled inside the housing, a supply spring-shaped filter inserted as a supply pipe for supplying a liquid to be treated into the housing, and a collection spring-shaped filter inserted as a collection pipe for collecting the purified liquid inside the housing and discharging it outside the housing, wherein the liquid to be treated is supplied into the housing from the supply spring-shaped filter, and the liquid to be treated is collected from the collection spring-shaped filter and discharged outside the housing.

[0018] Also, from this perspective, although not necessarily limited, the housing can be divided into a plurality of housing parts. A supply spring-shaped filter is inserted into one housing part, and a liquid collection spring-shaped filter is inserted into the other housing part. After collecting the purified liquid to be treated from the liquid collection spring-shaped filter and discharging it outside the housing, it is preferable to collect the filter medium in one of the housing parts, divide the housing into a plurality of housing parts, and seal the filter medium by covering the opening area of the housing part with a lid.

[0019] Also, from this perspective, although not necessarily limited, when collecting the filter medium in one of the housing parts, it is preferable to perform a liquid removal process using the supply spring-shaped filter.

Effects of the Invention

[0020] As described above, the present invention can provide a spring-shaped filtering device and a filtering method that enable more efficient filtering.

Brief Description of the Drawings

[0021] [Figure 1] It is a diagram showing a schematic cross-section of the spring-shaped filtering device according to Embodiment 1. [Figure 2] It is a schematic external view of the spring-shaped filtering device according to Embodiment 1. [Figure 3] It is a diagram showing a schematic cross-section of the spring-shaped filtering device according to Embodiment 1. [Figure 4] It is a schematic diagram of the spring-shaped filter according to Embodiment 1. [Figure 5] It is a schematic cross-sectional view of the spring-shaped filter according to Embodiment 1. [Figure 6] It is an image diagram of the flow of the liquid to be treated in the spring-shaped filtering device according to Embodiment 1. [Figure 7] It is an image diagram of the flow of the liquid to be treated in the spring-shaped filtering device according to Embodiment 1. [Figure 8] It is a diagram showing a schematic cross-section of the spring-shaped filtering device according to Embodiment 2. [Figure 9] It is a diagram showing a perspective schematic of the lower housing of the spring-shaped filtering device according to Embodiment 2. [Figure 10] This figure shows an image of the lower housing of the spring-type filtration device according to Embodiment 2 with a lid attached. [Figure 11] This is an illustrative diagram showing the spring-shaped filter of the spring-shaped filtration device according to Embodiment 2 with the spring-shaped filter removed. [Best Mode for Carrying Out the Invention]

[0022] (Embodiment 1) Embodiments of the present invention will be described in detail below with reference to the drawings. However, the present invention can be implemented in many different forms, and the specific examples described in the embodiments and examples below can be modified and adjusted as appropriate, and are not limited thereto.

[0023] Figure 1 is a schematic cross-sectional view of the spring-type filtration device (hereinafter referred to as "the device") 1 according to this embodiment when cut along a plane aligned with the vertical direction, and Figure 2 is a schematic external view of the device. Figure 3 is a schematic cross-sectional view of the device 1 when cut along a plane perpendicular to the vertical direction.

[0024] As shown in these figures, the apparatus 1 comprises a housing 2, a filter material 3 filled inside the housing 2, a supply spring-shaped filter 5 inserted as a supply pipe for supplying the liquid to be processed into the housing 2, and a liquid collection spring-shaped filter 4 inserted as a liquid collection pipe for collecting the liquid to be processed from inside the housing 2 and discharging it outside the housing.

[0025] Furthermore, in this device 1, the housing 2 comprises a cylindrical member 21, a first lid member 22 and a second lid member 23 that cover a pair of openings in the cylindrical member 21, a first cover 24 that covers the first lid 22 and has a supply liquid pipe connection port 241, and a second cover 25 that covers the second lid 23 and has a liquid collection pipe connection port 251. A supply spring-shaped filter 5 is supported through the first lid member 22, and a liquid collection spring-shaped filter 4 is supported through the second lid member 23.

[0026] As described above, the apparatus 1 supplies the liquid to be processed from the supply pipe connection port 241, while collecting the liquid to be processed from the collection pipe connection port 251. This allows for physical and chemical filtration by the liquid to be processed coming into contact with the filter medium 3 inside the apparatus, as well as physical filtration by the spring-shaped filter, thereby efficiently removing dissolved and insoluble impurities present in the liquid to be processed.

[0027] Furthermore, in this apparatus 1, the housing 2 is a component that forms the main framework of the apparatus 1. The material of the housing 2 can be adjusted as appropriate, as long as it can stably hold the filler and spring-shaped filter and does not dissolve in the liquid being processed. For example, metal, resin, etc. can be used, but are not limited to these.

[0028] Furthermore, the housing 2 of the device 1 has, as described above, a cylindrical member 21 and a first lid member 22 and a second lid member 23 that cover a pair of openings in the cylindrical member 21, thereby forming the main space for filling with the filter material 3. The cylindrical member 21 and the first lid member 22 and the second lid member 23 may be formed as a single unit, or they may be configured to be separable.

[0029] The cylindrical member 21 in the housing 2 of this device 1 is not limited as long as it is cylindrical, and the cross-sectional shape when cut by a plane perpendicular to its central axis may be circular, a polygon such as a square, or any other shape, but a circular shape is preferred from the viewpoint of being stable against pressure.

[0030] Furthermore, the lid member of the housing 2 of this device 1 is composed of a first lid member 22 and a second lid member 23, and as described above, it can cover the open ends on both sides of the cylindrical member 21. Here, "first" and "second" are terms used from the perspective that although they have similar configurations, it is preferable to explain them separately because their arrangement and usage may differ, so the terms "first" and "second" themselves do not contain any special technical meaning. In this device 1, by combining the cylindrical member 21 with the pair of lid members, it is possible to combine the filter agent 3, the spring-shaped filter 5 for the supply liquid, and the spring-shaped filter 4 for the collection liquid into a single portable cartridge, and by changing only this part, it is possible to maintain a filtration and adsorption system in which the substances filtered and adsorbed by the filter agent 3 can be replaced without touching them.

[0031] Furthermore, the first lid member 22 and the second lid member 23 of the housing 2 of this device 1 each have through holes, into which the spring-shaped filter is inserted. In other words, the lid members can be used to partition the space within the cylindrical member and to fix the spring-shaped filter in place. More specifically, the through holes have screw threads, and the spring-shaped filter can be firmly fixed to the lid member by engaging the screw threads formed on the outside of the fitting of the spring-shaped filter with these screw threads.

[0032] Furthermore, as described above, the housing 2 of the device 1 is further equipped with a first cover 24 and a second cover 25. By providing the cover 24, even when multiple spring-type filters are used, their outputs or inputs can be handled together as one. Specifically, the first cover 24 covers the first lid 22 and has a supply pipe connection port 241, and the second cover 25 covers the second lid 23 and has a liquid collection pipe connection port 251. This makes it possible to efficiently process liquids even when multiple spring-type filters are used. Although not shown, piping is connected to the supply pipe connection port 241, and liquid is pumped in by a pump or the like. On the other hand, although not shown, piping is also connected to the drain pipe connection port 251, and the processed liquid is discharged. Of course, instead of a pressure pump, it is also possible to connect a suction pump to the drain pipe to form a flow of the liquid to be processed. Furthermore, although "first" and "second" are used here as well, as mentioned above, "first" and "second" have similar structures, but their arrangement and usage may differ, so it is preferable to explain them separately. Therefore, "first" and "second" themselves do not contain any special technical meaning.

[0033] Furthermore, in this apparatus 1, the filter agent 3 is filled inside the housing 2 as described above, and by coming into contact with the liquid to be processed supplied inside, it can remove impurities (insoluble and dissolved substances) that exist in a dissolved or insoluble state by collection or adsorption. In other words, the filter agent 3 in this apparatus 1 may be a filter aid that simply collects impurities that exist in a dissolved state by forming physical gaps, etc., or it may be an adsorbent that is chemically modified around it and reacts with and adsorbs specific chemical substances (dissolved impurities) (for example, an ionic substance adsorbent that adsorbs ionic substances), and is not limited as long as it can filter. Also, the insoluble and dissolved substances may be metals, nonmetals, or radioactive substances.

[0034] Therefore, the filter agent 3 in this device 1 is not limited as long as it has the above-mentioned function, but it is preferably a radioactive substance or dissolved metal, and more specifically, it is preferably a metal-based or apatite-based adsorbent or a radiation-graft polymerization powder. In particular, metal-based adsorbents have a high specific gravity, and as shown in Patent Document 1, in a filtration system using a conventional spring-shaped filter, there is a problem that it is not easy to stably attach them around the spring-shaped filter as a filter aid. Furthermore, even if they are stably attached around the spring-shaped filter, there is a problem that it is not possible to secure a sufficient thickness. Therefore, in this device 1, the filter agent 3 is filled inside the housing 2 and the spring-shaped filter is inserted, thereby allowing the heavy filter agent 3 to flow and solving the above problems.

[0035] Furthermore, in this apparatus 1, the supply spring filter 5 is inserted into the housing 2 as a supply pipe for supplying the liquid to be processed, as described above. Figure 4 shows an external view of the supply spring filter 5 used in this embodiment, and Figure 5 shows a cross-sectional view thereof.

[0036] Since the structure of the supply spring filter 5 and the liquid collection spring filter 4 are basically the same in this device 1, the supply spring filter 5 will be explained as an example, but it can be understood by substituting the liquid collection spring filter 4 for each.

[0037] As shown in these figures, the supply spring filter 5 comprises a coiled spring wire 41, a core metal 42 positioned in the hollow portion 411 of the coiled spring wire 41, a top fitting 43 positioned at one end 421 of the core metal 42, and a bottom fitting 44 positioned at the other end 422 of the core metal 42. The coiled spring wire 41 is positioned between the top fitting 43 and the bottom fitting 44, with some play provided, and one of its features is that the inner diameter of the coiled spring wire 41 is larger than the width of the core metal 42.

[0038] Here, the coiled spring-shaped wire 41 is a wire wound in a coiled spring shape while maintaining a predetermined inner diameter, and adjacent wire portions are densely arranged at a predetermined distance from each other. When configured and functioning as a spring-shaped filter, the coiled spring-shaped wire 41 substantially functions as a filter member. The material of the wire is not limited, but stainless steel is a preferred example because it is resistant to rust. If it is stainless steel, it is not limited, but austenitic stainless steel is more preferred, for example, SUS316 and SUS316L can be given as examples.

[0039] Here, the "inner diameter" of the coiled spring-shaped wire 41 refers to the inner diameter of the hollow cylindrical shape measured when there is no pressure difference between the inner and outer circumferences of the coiled spring-shaped wire.

[0040] Furthermore, in this spring-shaped filter, the coiled spring-shaped wire 41 has numerous protrusions 412 having flat portions 4121 formed at regular intervals, and these gaps function as a filter.

[0041] Furthermore, the core metal 42 according to this embodiment is a member that is extended in one direction, with a top fitting 43 and a bottom fitting 44 positioned near both ends, and is used to hold the coiled spring-shaped wire 41. The material of the core metal 42 is not limited, but stainless steel, which is resistant to rust, can be suitably used, similar to the coiled spring-shaped wire 41. The shape of the core metal 42 can be a plate, wire, cylindrical, etc., as long as it is extended in one direction so that it can be positioned on the inner circumference side of the coiled spring-shaped wire 41, and is not limited, but a plate shape is preferable from the viewpoint of suppressing deformation of the coiled spring-shaped wire 41 and ensuring a flow path for the filtered liquid. A bolt is positioned at the lower end 422 of the core metal 42 (the side where the bottom fitting 44 is positioned) as a bottom fitting fixing device used to fix a nut that holds the bottom fitting 44 in place.

[0042] In this embodiment, the "width" of the core metal refers to the maximum cross-sectional area in a direction approximately perpendicular to the direction in which the core metal extends. Specifically, if the core metal is plate-shaped, it refers to the width of the plate; if the core metal is cylindrical, it refers to the diameter.

[0043] In this embodiment, the top fitting 43 is positioned near one end 421 of the core metal and, in conjunction with the bottom fitting 44, can hold the coiled spring-shaped wire 41. The configuration of the top fitting 43 is not limited, but a preferred example is that it is formed by creating a cylindrical hollow and having a stepped surface inside for contacting the coiled spring-shaped wire 41.

[0044] Furthermore, in this embodiment, the bottom fitting 44 is positioned near the other end 422 of the core metal 42 and, in conjunction with the top fitting 43, can hold the coiled spring-shaped wire 41. The configuration of the bottom fitting 44 is not limited, but it is configured to have a bottom plate for holding down the coiled spring-shaped wire 41 and side surfaces arranged around the bottom plate. The bottom fitting 44 is fixed to the core metal 42 by a bolt and fitted onto this bolt. It is preferable that it be secured with a nut.

[0045] In this embodiment, the coiled spring wire 41 is positioned between the top fitting 43 and the bottom fitting 44, but with some play between them. The inner diameter of the hollow portion of the coiled spring wire 41 is larger than the width of the core metal 42 by 10 μm to 1 mm. Making it 10 μm or more larger than the width of the core metal 42 has the effect of preventing buckling that occurs when pressure is applied from the outer circumference, and making it 1 mm or less has the effect of suppressing unnecessary deflection of the coiled spring wire 41. The amount of play can be adjusted as appropriate depending on the pressure applied to the spring filter and the inner diameter, but for example, under the conditions of the above inner diameter, it is preferable that the distance between the stepped surface of the top fitting 43 and the bottom surface of the bottom fitting 44 is 0.05 mm to 2 mm. If the inner diameter is set to 0.05 mm or more under the above conditions, even if pressure is applied from the outer circumference and the inner diameter shrinks, increasing the length of the coiled spring wire, it is possible to reduce the risk of buckling by making it unnecessarily longer than the space between the top fitting 43 and the bottom fitting 44. If the inner diameter is set to 2 mm or less, even if the coiled spring wire 41 becomes longer, it is possible to prevent play from occurring between the top fitting 43 and the bottom fitting 44.

[0046] Furthermore, in this device 1, it is preferable that the supply spring-shaped filter 5 is inserted into the housing from the lower vertical side. Also, it is preferable that the liquid collection spring-shaped filter 4, which will be described later, is inserted into the housing from the upper vertical side. By inserting them from above and below along the vertical direction in this way, it becomes possible to arrange them parallel to each other without contact.

[0047] Furthermore, in this apparatus 1, the liquid collection spring filter 4 is inserted as a liquid collection pipe for sucking the liquid to be processed from inside the housing 2 and discharging it outside the housing, as described above. The structure of the liquid collection spring filter 4 is almost the same as the supply spring filter 5 described above, except for its length and the direction in which it is installed, so it is not shown in the diagram.

[0048] Furthermore, in this device 1, multiple supply spring-shaped filters 5 are provided, and although not limited to them, it is preferable that they be arranged surrounding the liquid collection spring-shaped filter 4.

[0049] Furthermore, in this apparatus 1, if the housing 2 has a roughly circular cross-section with a plane perpendicular to the vertical direction, it is preferable, though not limited to, to arrange a liquid collection spring-shaped filter 4 near the center and multiple supply spring-shaped filters 5 around the liquid collection spring-shaped filter 4. By doing so, it becomes possible to efficiently recover the liquid to be processed released from the supply spring-shaped filters 5 with the liquid collection spring-shaped filter 4. An illustrative diagram of this case is shown in Figure 6.

[0050] Furthermore, in this apparatus 1, it is preferable that the liquid collection spring filter 4 is longer than the supply spring filter 5. This is because the liquid to be treated released from the supply spring filter 5 into the housing 2 is released radially, and by making the liquid collection spring filter 4 longer than the supply spring filter 5 within the housing, this radially released portion can be efficiently formed. Forming this radially released portion has the advantage of increasing the contact opportunities between the liquid to be treated and the filter agent 3, enabling more efficient adsorption. An illustrative diagram of this case is shown in Figure 7.

[0051] In summary, this device is a spring-type filtration system that enables more efficient filtration than conventional column filtration methods.

[0052] As is clear from the above description, a liquid filtration method using the apparatus 1 will now be explained. The liquid filtration method according to this embodiment (hereinafter referred to as "this method") uses the apparatus 1 described above, and (S1) supplies the liquid to be processed into the housing from a supply spring-shaped filter, and (S2) collects the liquid to be processed from a collection spring-shaped filter and discharges it outside the housing.

[0053] In summary, this method enables more efficient adsorption filtration.

[0054] (Embodiment 2) This embodiment is similar to Embodiment 1 described above, but is characterized in that the housing can be divided into multiple housing sections (for example, an upper housing section and a lower housing section), with a supply spring-shaped filter placed in one housing section and a liquid collection spring-shaped filter in the other housing section. The other configurations are the same as in Embodiment 1 described above, so a description will be omitted.

[0055] Figure 8 is a schematic cross-sectional view of the spring-shaped filtration device 1 according to this embodiment (hereinafter referred to as "this device") when it is cut along a plane in the vertical direction.

[0056] As shown in this figure, the apparatus 1, similar to the embodiment described above, comprises a housing 2, a filter material 3 filled inside the housing 2, a supply spring-shaped filter 5 inserted as a supply pipe for supplying the liquid to be processed into the housing 2, and a liquid collection spring-shaped filter 4 inserted as a liquid collection pipe for collecting the liquid to be processed from inside the housing 2 and discharging it outside the housing.

[0057] In this device 1, the housing 2, more specifically the cylindrical member 21, is divisible into an upper housing portion 211 and a lower housing portion 212. A liquid collection spring-shaped filter 4 is inserted into the upper housing portion 211, and the supply spring-shaped filter 5 is inserted into the lower housing portion 212. When the housing 2, the cylindrical member 21, is divided, an opening is formed at the divided portion. However, the ends of the liquid collection spring-shaped filter 4 and the supply spring-shaped filter 5 do not protrude from the end face, and it is possible to close it with a lid member on the plane. Figure 9 shows a schematic perspective view of the lower housing portion 212, which is one of the divided portions, and Figure 10 shows an image of the lower housing portion 212 when closed with the lid 6. In this embodiment, by dividing the housing into multiple portions, the filter material can be concentrated in one housing portion, and the concentrated filter material can then be sealed with a lid member. This has the advantage that, for example, if the filter material is an adsorbent that adsorbs radioactive materials, it can be sealed and stored together with the filter material that has adsorbed radioactive materials.

[0058] In this case, the supply spring filter 5 may be removed from the housing. By removing the supply spring filter 5, it can be reused as a spring filter. It is preferable to cover the hole left after removal with another cover member. An image of this case is shown in Figure 11.

[0059] Furthermore, in the liquid filtration method according to this embodiment (hereinafter referred to as "this method"), similar to the above, (S1) the liquid to be treated is supplied into the housing from a supply spring-shaped filter, and (S2) the liquid to be treated is collected from a collection spring-shaped filter and discharged outside the housing. However, the housing can be divided into multiple housing parts, with a supply spring-shaped filter inserted into one housing part and a collection spring-shaped filter inserted into the other housing part. After collecting the purified liquid to be treated from the collection spring-shaped filter and discharging it outside the housing, the filter material is collected in one of the housing parts, the housing is divided into multiple housing parts, and the filter material is sealed by covering the opening area of ​​the housing part with a lid. This makes it possible to seal the filter material to which impurities have adhered.

[0060] Furthermore, in this case, when the filter material is collected in either housing section, it is preferable to perform a deliquidation process using a supply spring-type filter. Specifically, in this method, the liquid to be treated is supplied into the housing from the lower supply spring-type filter, while when it is discharged outside the housing from the collection spring-type filter, impurities are adsorbed and filtered by the filter material present inside. On the other hand, after the processing of the liquid to be treated is complete, the filter material accumulates in one of the housing sections (the lower housing section in this embodiment), but a considerable amount of the liquid to be treated may remain in this filter material. Therefore, in this embodiment, there is an advantage in that the liquid to be treated can be removed from the filter material by sucking the liquid to be treated back from the supply spring-type filter that was used to supply the liquid to be treated and performing a deliquidation process.

[0061] As described above, according to this embodiment, by making the housing divisible and inserting a spring-type filter into each part, a more highly functional spring-type filtration device can be provided. Furthermore, by having multiple lower housing sections and a mechanism to replace these housing sections for each process, it becomes possible to perform work safely, easily, and continuously. As a result, for example, in the processing of liquids containing radioactive materials, specifically, by efficiently adsorbing radioactive materials and reducing the volume of the filter agent through deliquidation, stable sealed storage of used filter agent becomes possible. Moreover, by using this device, it is possible to easily apply it to processes such as compound generation, where an adsorbent or multiple liquids to be processed are introduced into the filtration device and reacted, filtered and adsorbed by the filter agent, and the filtered and adsorbed substances are collected and removed from the lower housing section. Alternatively, this device can be used as a regeneration device for used filter media. Alternatively, this device can be used as a granulator for coarsening fine powders. [Industrial applicability]

[0062] The present invention has industrial applicability as a filtration device and filtration method.

Claims

1. A housing and A filter medium filled in the housing; a supply spring filter inserted into the housing as a supply pipe for supplying the liquid to be treated; a spring-type filter for collecting liquid, which is inserted as a liquid collection pipe for collecting the liquid to be treated from within the housing and discharging it outside the housing.

2. The liquid-collecting spring filter is provided in plurality, 2. The spring-type filtration device according to claim 1, wherein the supply spring filters are disposed to surround or face the liquid collecting spring filter.

3. The supply spring filter is inserted into the housing from below in a vertical direction, 2. The spring-type filtration device according to claim 1, wherein the liquid-collecting spring filter is inserted into the housing from above in the vertical direction.

4. 2. The spring filter device of claim 1, wherein the collection spring filter is longer than the supply spring filter.

5. 2. The spring-type filtering device according to claim 1, wherein the cross section of the housing taken along a plane perpendicular to the vertical direction is substantially circular or angular, and a plurality of the supply spring filters are disposed around or near the liquid collecting spring filter.

6. the housing includes a cylindrical member, a first lid member and a second lid member covering a pair of openings of the cylindrical member, a first cover covering the first lid portion and having a supply pipe connection port, and a second cover covering the second lid portion and having a liquid collection pipe connection port; The supply spring filter is supported through the first cover member, 2. The spring-type filtration device according to claim 1, wherein the liquid-collecting spring filter is supported through the second cover member.

7. 2. The spring-type filter device according to claim 1, wherein the filtering agent is an adsorbent for radioactive materials and dissolved substances.

8. A filtering method using a spring-type filtering device including a housing, a filtering agent filled in the housing, a supply spring-type filter inserted as a supply pipe for supplying a liquid to be treated into the housing, and a liquid collection spring-type filter inserted as a liquid collection pipe for collecting a treatment liquid obtained by purifying the liquid to be treated in the housing and discharging it outside the housing, Supplying the liquid to be treated from the supply spring filter into the housing; The liquid filtering method includes collecting the purified liquid to be treated from the liquid collecting spring filter and discharging it outside the housing.

9. The housing can be divided into a plurality of housing parts, 2. The spring-type filter device according to claim 1, wherein the supply spring filter is inserted into one of the housing portions, and the liquid-collection spring filter is inserted into the other housing portion.

10. The spring-shaped filter device according to claim 9 , further comprising a cover member that covers an opening area of ​​the housing portion when the housing is separated into the housing portions.

11. The housing can be divided into a plurality of housing parts, The supply spring filter is inserted into one of the housing parts, and the liquid collection spring filter is inserted into the other housing part, 9. The liquid filtering method according to claim 8, wherein after the purified liquid to be treated is collected from the collecting spring filter and discharged outside the housing, the filtering agent is concentrated in one of the housing parts, the housing is divided into the plurality of housing parts, and the filtering agent is sealed by covering the opening areas of the housing parts with lids.

12. The liquid filtering method according to claim 11, wherein when the filtering agent is collected in any one of the housing parts, a liquid removal process is performed using the supply spring filter.

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