Filter body and filtration device

Abstract

To provide a filtration body excellent in cleanability.SOLUTION: A filtration body comprises: a laminate in which a plurality of sheet-like members are stacked; support members for supporting the plurality of sheet-like members, respectively; and an expansion member that moves at least one of the support members so as to be capable of expanding a space adjacent to at least a part of each of the plurality of sheet-like members.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a filter body and a filtering device. [Background technology]

[0002] Various methods and devices for removing contaminants and solids from fluids such as liquids or gases have been studied (see, for example, Patent Documents 1 and 2). Also, methods for dehydrating objects containing moisture and solids have been studied (see, for example, Patent Document 3). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2013-176762 A [Patent Document 2] JP 2020-146615 A [Patent Document 3] JP 2020-065973 A Summary of the Invention [Problem to be solved by the invention]

[0004] If substances separated during the filtration process (also called filtration) accumulate in the filter, the filter will become clogged and the filtration efficiency will decrease. Therefore, it is necessary to wash the filter to wash away the accumulated substances. It is desirable to make the filter easy to wash. [Means for solving the problem]

[0005] The filter body of the present invention is characterized in that it comprises a laminate in which a plurality of sheet-like members are stacked, a support member that supports each of the plurality of sheet-like members, and an expansion member that is capable of expanding a space adjacent to at least a portion of each of the plurality of sheet-like members by moving the support member. Effect of the Invention

[0006] According to the present invention, the filter body can be easily washed. [Brief description of the drawings]

[0007] [Figure 1] FIG. 2 is a schematic view of a filter body according to the first embodiment. [Diagram 2] FIG. 2 is a schematic view illustrating a state during cleaning of the filter body shown in FIG. [Diagram 3] 1A and 1B are diagrams showing an example of a manner in which a sheet-like member is supported by a supporting member which is a plate-like member; [Figure 4A] FIG. 4 is a schematic view of a filter body according to a second embodiment. [Figure 4B] FIG. 4B is a schematic diagram showing the filter body shown in FIG. 4A in a non-laminated state. [Diagram 5] 4B is a partially enlarged side view of the filter body shown in FIG. 4A. [Figure 6] 1 shows a top view of an example sheet-like member and a support member. [Figure 7] FIG. 13 is a front view of a sheet-like member and a support member according to another example. [Figure 8A] 1A and 1B are diagrams showing an example of a connection mode of a sheet-like member to a hard member. [Figure 8B] FIG. 13 is a diagram showing an example of an embodiment in which an end portion of a sheet-like member is integrated with a hard member. [Figure 8C] 11A and 11B are diagrams illustrating an example of a manner in which a sheet-like member is connected to a support member. [Figure 9] FIG. 11 is a schematic view of a filter body according to a third embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0008] Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. In each drawing, the same components are designated by the same reference numerals, and components that have the same basic functions but different structures are designated by reference numerals with "100" added or with "'" added.

[0009] (Filter body) The filter body of the present invention includes a laminate (also called a filter medium) in which a plurality of sheet-like members are laminated, a support member that supports each of the plurality of sheet-like members, and an expansion member that can expand a space adjacent to at least a part of each of the plurality of sheet-like members by moving the support member. When cleaning the filter body of the present invention, the mutual spaces between the plurality of sheet-like members can be expanded by moving the support member with the expansion member, so that the sheet-like members can be easily cleaned. Hereinafter, the filter body of the present invention will be described with reference to Figs. 1 to 9.

[0010] [First embodiment] 1 shows a schematic configuration of a filter body 100 according to a first embodiment. The filter body 100 includes a stack 110 in which a plurality of sheet-like members (101, 102) are stacked, support members (121, 122) that support each of the sheet-like members (101, 102), and expansion members (131, 132) that are capable of expanding a space adjacent to at least a portion of each of the sheet-like members (101, 102) by moving at least one of the support members (121, 122).

[0011] The water to be treated flows into the filter body 100 from the direction of the arrow shown in FIG. 1. For clarity, FIG. 1 illustrates a state in which the sheet-shaped members 101 and 102 constituting the laminate 110 are separated from each other, but during filtration, the sheet-shaped members 101 and 102 are in contact with each other to form the laminate 110. The water to be treated that flows into the filter body 100 from the direction of the arrow moves through the gap between the sheet-shaped members 101 and 102. In this movement process, solids such as sludge contained in the water to be treated are separated by the laminate 110, and the solids are removed from the water to be treated, becoming treated water, i.e., filtrate, which flows into a space (hereinafter, the inside) defined by the inner surface of the cylindrical member 133. Although not shown, the treated water that flows into the inside of the cylindrical member 133 may be sent to a component of the water treatment device arranged at the rear of the filter body 100, such as a treated water outlet pipe.

[0012] The upper sheet-like member 101 is supported by an upper support member 121, and the lower sheet-like member 102 is supported by a lower support member 122. Here, both the upper support member 121 and the lower support member 122 shown in FIG. 1 are plate-like members. The upper support member 121 supports the upper sheet-like member 101 from one side (the upper side in the illustrated example). The lower support member 122 supports the lower sheet-like member 102 from one side (the lower side in the illustrated example). The type (material) of the upper sheet-like member 101 and the lower sheet-like member 102 is not particularly limited. For example, the upper sheet-like member 101 and the lower sheet-like member 102 are filter cloths. The type (material) of the upper sheet-like member 101 and the lower sheet-like member 102 can be appropriately determined depending on the object to be filtered by the filter body 100.

[0013] Here, in the filter body 100 according to this example, the upper extension member 131 is connected to the upper support member 121 , and the lower extension member 132 is connected to the lower support member 122 . The upper extension member 131, the lower extension member 132, and the tubular member 133 are cylindrical in shape and have a rectangular opening (not shown) along the longitudinal direction of the cylinder. The longitudinal end of the upper support member 121 is connected along the upper end of the opening of the upper extension member 131. The longitudinal end of the lower support member 122 is connected along the lower end of the opening of the lower extension member 132. The upper expansion member 131 and the lower expansion member 132 have a nested structure. For example, the upper expansion member 131 is inserted into the lower expansion member 132, and the inner surface of the lower expansion member 132 and the outer surface of the upper expansion member 131 come into contact with each other. The cylindrical upper expansion member 131 and the lower expansion member 132 are movable in the circumferential direction, as described in FIG. 2. Furthermore, the tubular member 133 is inserted into the upper expansion member 131, and the inner surface of the upper expansion member 131 and the outer surface of the tubular member 133 come into contact with each other, and the cylindrical upper expansion member 131 is movable in the circumferential direction relative to the tubular member 133, as described in FIG. 2. The water to be treated that flows in from the outside of the laminate 110 is filtered by the upper sheet-like member 101 and the lower sheet-like member 102, and flows as treated water through the upper extension member 131, the lower extension member 132, and the openings of the tubular member 133 into a space that may be defined by the inner surface of the tubular member 133 (hereinafter, referred to as the interior). Thereafter, as described above, this treated water may be sent to a component of the water treatment device arranged downstream of the filter body 100, such as a treated water outflow pipe. The water to be treated that flows into the filter body 100 from the direction of the arrow that coincides with the X-axis in the XYZ coordinate system shown in Fig. 1 can move inside the laminate 110 due to capillary action. At this time, a member capable of preventing the outflow of the treated water or the inflow of the water to be treated may be provided at the end of the laminate 110 in the same direction as the arrow so that the treated water can efficiently flow into the inside of the cylindrical member 133. Alternatively, the laminate 110 may be configured not to have such a member, and the water to be treated may also flow into the laminate 110 from the Y-axis direction in the XYZ coordinate system shown in Fig. 1, and the obtained treated water may flow into the inside of the cylindrical member 133.

[0014] (Washing) 1, when the filtration of the water to be treated is continued, solid matter in the water to be treated separated by the laminate 110 accumulates in the laminate 110, and the filtration efficiency decreases. Therefore, in order to remove the solid matter, it is necessary to wash the laminate 110. The filter 100 that facilitates this washing will be described with reference to FIG. 2 is a schematic diagram for explaining the state of the filter body shown in FIG. 1 during cleaning. As indicated by the arrows in FIG. 2, the upper extension member 131 and the lower extension member 132 are movable so as to change the inter-surface distance between the upper sheet-like member 101 and the lower sheet-like member 102 by moving at least one of the upper support member 121 and the lower support member 122. That is, by moving the upper extension member 131 and the lower extension member 132 relatively, the relative distance between the upper support member 121 and the lower support member 122 is changed, and the inter-surface distance between the upper sheet-like member 101 and the lower sheet-like member 102 can be changed.

[0015] More specifically, a space can be created between the upper sheet-like member 101 and the lower sheet-like member 102 by (1) rotating and moving both the upper extension member 131 and the lower extension member 132, each of which is cylindrical, in opposite directions, or by (2) rotating and moving at least one of the upper extension member 131 and the lower extension member 132, each of which is cylindrical, in a clockwise or counterclockwise direction. Since a space can be created in this way, it becomes easy to move a cleaning tool into this space to clean the upper sheet-like member 101 and the lower sheet-like member 102. In other words, the filter body becomes easy to clean. The structure and arrangement of the upper extension member 131 and the lower extension member 132 are not limited to the illustrated embodiment. Furthermore, the upper extension member 131 and the lower extension member 132 can be formed, for example, by piping, but are not limited to this. Furthermore, as illustrated, a cylindrical member 133 may be provided so as to abut against the inner surface of the upper extension member 131.

[0016] 1 and 2, the inside of the tubular member 133 may form a flow path or a storage tank for treated water. However, when the filter body 100 does not include the tubular member 133, the inner surface of the upper extension member 131 and the inside of the lower extension member 132 may form a flow path or a storage tank for treated water.

[0017] 3 shows an example of a state in which a sheet-like member is supported by a plate-like supporting member. The upper sheet-like member 101 is supported by the upper supporting member 121 by engaging a U-shaped member (Ck) provided on the upper sheet-like member 101 with a claw member (Nk, k is an integer from 1 to 4) attached to the upper supporting member 121. If the upper support member 121 and the lower support member 122 are plate-like members, in a state in which the lower support member 122, the lower sheet-like member 102, the upper sheet-like member 101, and the upper support member 121 are stacked, the two sheet-like members (101, 102) can be supported and fixed by both support members (121, 122) which are plate-like members. In this way, the upper support member 121 and the lower support member 122 can suppress bending of the upper sheet-like member 101 and the lower sheet-like member 102.

[0018] 1 and 2 has a configuration in which the sheet-like members are moved in the vertical direction of the drawings, and this configuration expands the space adjacent to at least a part of each sheet-like member. Next, with reference to Figs. 4 to 9, a filter in which the sheet-like members are moved in the horizontal direction to expand this space will be described.

[0019] [Second embodiment] 4A and 4B show schematic diagrams of a filter body 200 according to a second embodiment. Fig. 4A is a schematic diagram showing a laminated state of the filter body 200 during filtration, and Fig. 4B is a schematic diagram showing a non-laminated state of the filter body 200 during cleaning. The filter body 200 shown in Fig. 4A includes a laminate 210 in which a plurality of sheet-like members (201-208) are laminated.

[0020] The water to be treated flows into the filter body 200 from the direction of the arrow shown in Fig. 4A. That is, the X-axis direction of the XYZ coordinate system shown in Figs. 4A-B coincides with the inflow direction of the water to be treated into the stack, as shown by the arrow in Fig. 4A. The Y-axis direction coincides with the axial direction of the left extension member 231 and the right extension member 232, which are illustrated as cylindrical hollow members (in the figure, the axial direction is illustrated by a dashed line). Furthermore, the Z-axis direction coincides with the stacking direction of the stack 210. For clarity, the thicknesses and gaps of the eight sheet-like members (201-208) are exaggerated in Fig. 4A. In an actual filter body, the thicknesses of the sheet-like members are thin, and the gaps between the sheet-like members may be narrow enough to provide a capillary effect.

[0021] Among the multiple sheet-like members (201-208), the sheet-like member 201 arranged in the top layer of the laminate 210 and the sheet-like member 208 arranged in the bottom layer of the laminate 210 are each supported by a plate-shaped support member as shown in FIG. 5. In other words, the upper and lower surfaces of the laminate 210 are formed by plate-shaped support members. The other sheet-like members (202-207) constituting the laminate 210 are supported by support members (222-227) which are rod-shaped members supporting each of them from the side. Parts of the support members (222-227) which are rod-shaped members and one end of the sheet-like members 201 and 208 supported by a plate-shaped support member (not shown) are accommodated in the mounting recess 234. In FIG. 4B, for convenience of illustration, only the mounting recess 234 provided in the right extension member 232 is shown, but the left extension member 231 is also provided with a mounting recess having the same function as the mounting recess 234.

[0022] The left extension member 231 is connected to the support members (222 to 224), and the right extension member 232 is connected to the support members (225 to 227). The left extension member 231 and the right extension member 232 have rectangular openings (not shown) along the longitudinal axis direction of the cylinder. The water to be treated that flows in from the outside of the stack 210 flows into the left extension member 231 and the right extension member 232 through these openings as treated water. Further, a plate-like support member (not shown) supporting the sheet-like member 201 arranged in the uppermost layer of the stack 210 is connected to the left extension member 231, and a plate-like support member (not shown) supporting the sheet-like member 208 arranged in the lowermost layer of the stack 210 is connected to the right extension member 232. Therefore, as shown in Fig. 4B, by moving at least one of the left extension member 231 and the right extension member 232 to widen the gap between them (the gap in the Y-axis direction, which will be described later), it is possible to expand the space adjacent to at least a portion of each of the multiple sheet-like members (201 to 208).

[0023] 4B, for clarity, support member 225 supporting sheet-like member 205, support member 226 supporting sheet-like member 206, and support member 227 supporting sheet-like member 207 are illustrated, and the illustration of the rod-shaped support members supporting the sheet-like members (202 to 204) is omitted. By employing rod-shaped members as the support members, the design freedom in terms of the number of stacked support members constituting the stack is increased, and the weight of the filter body can be reduced.

[0024] As is clear from FIG. 4B, the left extension member 231 and the right extension member 232 move in the Y-axis direction, in other words, in the direction horizontal to the surfaces of the sheet-like members (201-208), in opposite directions relative to each other, thereby expanding the space adjacent to each surface of each of the eight sheet-like members (201-208) that were adjacently arranged in the stack 210. This makes it easier to clean the eight sheet-like members (201-208). Note that the structure and arrangement of the extension members are not limited to the illustrated embodiment. Here, in this specification, "a direction horizontal to the surface of the sheet-like member" means a horizontal direction based on the surface of the sheet-like member when it is assumed that no bending occurs in the sheet-like member.

[0025] Furthermore, a third hollow member 233 may be disposed inside the left extension member 231 and the right extension member 232, each of which is a hollow member. The third hollow member 233 may have a stopper (not shown) at an end thereof, so that the left extension member 231 and the right extension member 232 do not come off the third hollow member 233 when they are moved during cleaning of the stack 210. In this case, the third hollow member 233 has an opening (not shown) for allowing the filtered water that has flowed out through the stack 210 to flow in.

[0026] 4A-B, a configuration including eight sheet-like members (201-208) has been described as an example, but the number of sheet-like members included in the filter body according to the present invention is not limited to eight. Furthermore, in a filter body according to another example of the present invention, for example, two sheet-like members may be arranged obliquely with respect to the axial direction of the left extension member 231 and the right extension member 232 as shown in FIGS. 4A-B. In this case, the connection portion of the left extension member and the right extension member is oblique, the same as the arrangement direction of the two sheet-like members.

[0027] FIG. 5 is a side view of the filter body 200 as viewed from the right extension member 232 side along the Y axis in the XYZ coordinate system shown in FIGS. 4A and 4B. In FIG. 5, a part of the filter body 200 is shown enlarged. In FIG. 5, the part shown by the dashed line is the part accommodated in the mounting recess 234 provided in the right extension member 232 shown in FIGS. 4A and 4B. In addition, the mounting recess 234 provided in the right extension member 232 is provided with a plurality of shaft fixing parts (not shown) for fixing the shaft parts (225a to 227a) to the right extension member 232, a fixing part (not shown) for fixing the support member 228, and a plurality of receiving parts (not shown) for supporting the shaft parts (222a to 224a) of the left extension member 231 and the support member 221 in a manner that allows them to move in the longitudinal direction. Although not shown, a similar mounting recess is also provided in the left extension member 231. That is, in the mounting recess (not shown) provided in the left extension member 231, there are provided a plurality of shaft fixing portions (not shown) for fixing the shaft portions (222a to 224a) and a fixing portion (not shown) for fixing the support member 221 to the left extension member 231, and a plurality of receiving portions (not shown) for supporting the shaft portions (225a to 227a) and the support member 228 of the right extension member 232 in a manner that allows them to move in the longitudinal direction.

[0028] The support members (222 to 227) each include a shaft portion (222a to 227a) and an attachment portion (222b to 227b). For example, the support member 225 includes a shaft portion 225a and an attachment portion 225b. The same applies to the other support members (222 to 224, 226, and 227). The side of the sheet-like member 205 is bonded to the attachment portion 225b via an adhesive or the like, forming a structure in which the sheet-like member 205 is supported by the support member 225 on the side surface side. The same applies to the other sheet-like members (222 to 224, 226, and 227). The sheet-like member 201 shown in FIG. 5 is supported by a plate-like support member 221. Similarly, the sheet-like member 208 is supported by a plate-like support member 228. The support mode in this case can follow the mode described with reference to FIG. 3.

[0029] FIG. 6 shows a top view of the sheet-like member and the support member according to the example described with reference to FIG. 5. As can be seen from FIG. 6, the shaft portion 225a and the sheet-like member 205 are connected via the attachment portion 225b. The attachment portion 225b is present in a part of the longitudinal direction of the shaft portion 225a. For clarity, the gap between the shaft portion 225a and the sheet-like member 205 is exaggerated in this figure, but in reality, the gap may be narrow. In addition, without being limited to the illustrated embodiment, the attachment portion 225b may be present in the entire area between the shaft portion 225a and the sheet-like member 205. Furthermore, the diameter of the rod-shaped shaft portion 225a may be equal to or smaller than the thickness of the sheet-like member 205.

[0030] FIG. 7 shows an example of the structure of the sheet-like member and the support member according to another example. FIG. 7 is a schematic diagram for explaining the structure of another laminated body that can be applied in place of the laminated body 210 shown in FIG. 4A-B and FIG. 5. FIG. 7 is a front view seen from the X direction in the XYZ coordinate system shown in FIG. 4A-B. In the upper part of FIG. 7, the boundary line between the left extension member 231 and the right extension member 232 is illustrated as a dashed line. The upper part of FIG. 7 shows a schematic structure in a case where the sheet-like members (202'-207') are in a laminated state in which they are laminated on each other, and the lower part of FIG. 7 shows a schematic structure in a state in which the sheet-like members (202'-207') are shifted from a laminated state to a non-laminated state by moving the left extension member 231 and the right extension member 232 in the direction of the arrow.

[0031] The sheet-like members (202'-207') and supporting members (240-243, 250-253) shown in FIG. 7 can be applied in place of the laminate 210 shown in FIG. 4. In FIG. 7, the thicknesses of the sheet-like members 202'-207' are omitted for clarity. A pair of ends of the sheet-like member 205' are supported by supporting members. The supporting members that support the sheet-like member 205' are composed of a receiving side supporting member 240 and an inserting side supporting member 241. The other sheet-like members (202'-204', 206'-207') have the same structure. In the stacked state shown in the upper part of Fig. 7, the insertion side support members (241-243, 251-253) and the receiving side support members (240, 250) are in a state in which the insertion side support members (241-243, 251-253) are inserted into the receiving side support members (240, 250). In the non-stacked state shown in the lower part of Fig. 7, the insertion side support members (241-243, 251-253) are in a state in which they are combined with each other. In other words, the insertion side support members (241-243, 251-253) function as stoppers for each other, so that the sheet-like members (205'-207') and the sheet-like members (202'-204') do not come off during cleaning. With this structure, it is possible to reduce the overlapping portions between the sheet-like members (202'-207') during cleaning, and to further increase the ease of cleaning the sheet-like members (202'-207'). Furthermore, with this structure, it becomes possible to easily form the laminated structure when restoring the laminated structure after cleaning.

[0032] The ends of the sheet-like members (202'-207') shown in FIG. 7 may have hard members. More specifically, a pair of ends of the sheet-like members (202'-207') shown in FIG. 7 may be connected to a hard member or may be integrated with the hard member. FIG. 8A shows an example of a connection mode of a pair of ends of the sheet-like member 202' to the hard members (261, 262). FIG. 8A is a front view in the same direction as FIG. 7, and shows a structure in which the ends of the sheet-like member 202' are connected to the hard members (261, 262). For example, the connection parts between the hard members (261, 262) and each end of the sheet-like member 202' may be formed by adhering or welding the sheet-like member 202' to a needle-like member (not shown) protruding from the hard member (261, 262). FIG. 8B shows an example of an embodiment in which the end of the sheet-shaped member 202' is integrated with a hard member. FIG. 8B is also a front view in the same direction as FIG. 7. As shown in FIG. 8B, the end of the sheet-shaped member 202' can be impregnated with a resin or the like and cured to form hard members (261, 262) of a desired shape. As described above with reference to FIG. 8A and FIG. 8B, by connecting the end of the sheet-shaped member 202' to the hard members (261, 262) or by integrating the end of the sheet-shaped member 202' with the hard members (261, 262), it is possible to impart strength to the sheet-shaped member 202' and suppress deterioration due to repeated use.

[0033] When the sheet-like member satisfying the structure as exemplified in Fig. 8A-B is combined with the structure described with reference to Fig. 7, one of the hard members (261, 262) shown in Fig. 8A-B may function as the insertion side support member 241 shown in Fig. 7. Furthermore, the hard member provided at the end opposite to the hard member functioning as the insertion side support member 241 shown in Fig. 7 may be connected to the receiving side support member 250 via a needle-like member 271 protruding from the receiving side support member 250 as shown in Fig. 8C. Such a connection may be by adhesion or welding. By adopting such a connection, it is possible to impart strength to the laminate and suppress deterioration due to repeated use.

[0034] [Third embodiment] A filter body of the third embodiment is shown in Fig. 9. In the second embodiment, the shape of the extension member is cylindrical, but in the third embodiment, an example in which the shape of the extension member is a rectangular box will be described. The filter body 300 shown in FIG. 9 includes a laminate 310 in which a plurality of sheet-like members (301, 302) are laminated, support members (321, 322) that support each of the plurality of sheet-like members (301, 302), and expansion members (331, 332) that are capable of expanding a space adjacent to at least a portion of each of the plurality of sheet-like members (301, 302) by moving at least one of the support members (321, 322).

[0035] The filter body 300 shown in FIG. 9 includes an upper sheet-like member 301 supported by an upper support member 321, which is a plate-like member, and a lower sheet-like member 302 supported by a lower support member 322, which is a plate-like member. The upper support member 321 and the upper sheet-like member 301 are connected to a left extension member 331, and the lower support member 322 and the lower sheet-like member 302 are connected to a right extension member 332. The left extension member 331 and the right extension member 332 move in opposite directions to each other in a direction horizontal to the surfaces of the upper sheet-like member 301 and the lower sheet-like member 302, as shown by the arrows in the figure, so that the upper sheet-like member 301 moves in the left rear direction in the figure, and the lower sheet-like member 302 moves in the right front direction in the figure. In this way, the space adjacent to the surfaces of the upper sheet-like member 301 and the lower sheet-like member 302 is expanded. This makes it easier to clean the upper sheet-like member 301 and the lower sheet-like member 302. As shown in the figure, the left extension member 331 and the right extension member 332 may be rectangular parallelepiped shaped. Furthermore, without being limited to the shape shown in the figure, the left extension member and the right extension member may be cylindrical. The filter bodies described in the first to third embodiments can be easily cleaned because the mutual spaces between the multiple sheet-like members can be expanded by moving the support members with the expansion members during cleaning. Furthermore, by adopting a structure in which the mutual spaces between the multiple sheet-like members are expanded by moving the support members with the expansion members, the burden on the sheet-like members during cleaning is reduced, and deterioration of the sheet-like members can be suppressed.

[0036] [Filtration equipment] The filtration device of the present invention includes any one of the above-mentioned filter bodies of the present invention. It can be suitably used for the same purpose as the filter body of the present invention. Optionally, the filtration device of the present invention can include structural parts such as a treated water storage tank for storing treated water filtered by the filter body, and a treated water outlet pipe 400 (shown in FIG. 9) connected to the treated water storage part and for discharging the treated water outside the device. For example, as shown in FIG. 9, the filter body 300 is connected to the treated water outlet pipe 400, and a filtration device including the filter body 300 and the treated water outlet pipe 400 can be configured. The filtration device of the present invention is excellent in ease of cleaning because it includes the filter body of the present invention. The filter body described above can be suitably used in treatment facilities for water to be treated that contains solids such as sludge. In particular, the filter body of the present invention can be suitably used when treating water to be treated that is generated in the water treatment process of water supply and sewerage. The filter body of the present invention can be relatively easily installed by replacing the filter member used in existing water treatment equipment. [Explanation of symbols]

[0037] 100,200,300 Filter body 101 Upper sheet member 102 Lower sheet member 110,210,310 Laminate 121 Upper support member 122 Lower support member 131 Upper extension member 132 Lower extension member 133 Cylindrical member 201~208, 202'~207', 301, 302 Sheet-like members 221,228 Plate-shaped support member 225~227,321,322 Support members 225a Shaft 225b Mounting part 231,331 Left side extension member 232,332 Right side extension member 233 Third hollow member 234 Mounting recess 240,250 Receiving side support member 241~243, 251~253 Insertion side support member 261,262 Hard materials 400 Treated water outflow pipe C1~C4 U-shaped components N1~N4 Claw parts

Claims

1. A laminate in which a plurality of sheet-like members are laminated; a support member that supports each of the plurality of sheet-like members; an expansion member capable of expanding a space adjacent to at least a portion of each of the plurality of sheet-like members by moving at least one of the support members; The support member includes at least one of a plate-shaped member that supports the sheet-shaped member from one side and a rod-shaped member that supports the sheet-shaped member from a side side, and When the support member is a plate-like member that supports the sheet-like member from one side, the expansion member is cylindrical, and the support member can be moved by rotating the expansion member in a circumferential direction. Filter body.

2. The filter body according to claim 1 , wherein the support member is configured to be movable so as to change a surface-to-surface distance between at least a pair of adjacent sheet-like members among the plurality of sheet-like members.

3. When the support member is a rod-shaped member supporting the sheet-like member from a side surface, the extension member is configured to be able to move at least a portion of the support member in a horizontal direction relative to a surface of the sheet-like member. The filter body according to claim 1 .

4. A filtration device comprising the filter body according to any one of claims 1 to 3.

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