JP2000084328A - Cylindrical filter member, its production and cylindrical filter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cylindrical filter member by which desired filterability is obtained, excellent in shape holding property and having a large filtration area, its producing method and a cylindrical filter. SOLUTION: The cylindrical filter member consists of (a) a filtration part 2 formed by assembling plural minute cylindrical cells in parallel in the longitudinal direction and (2) a cylindrical vertical hole 3 provided in the center of the filtration part 2, with the longitudinal direction parallel to that of the minute cylindrical cells, with the whole side face surrounded by the filtration part and having a larger inner diameter than the cell, a deformable assembly of the cells having an opposed outer filtration-part side face forming side face and the inner filtration-part side face forming side face and having two opposed joining side faces is deformed in the filtration part 2 so that the curvature of the filtration-part side face forming side face and that of the inner filtration- part side face forming side face are changed, and the joining side faces are joined to constitute the member.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cylindrical filter member, a method for manufacturing the same, and a cylindrical filter including the cylindrical filter member.

[0002]

2. Description of the Related Art A vertical flow type cylindrical filter is known as one type of filter capable of purifying a fluid by collecting dust (dust) contained in a fluid to be treated such as a liquid or a gas. This vertical flow type cylindrical filter generally has a structure in which a hollow pipe having a large number of pores for fluid passage on a side wall is provided at a central portion thereof, and a filter medium is wound around the hollow pipe. From the outer side of the hollow filter to the hollow pipe (or vice versa, ie from the inside of the hollow pipe to the outer side of the cylindrical filter)
And a filtration treatment is performed by passing the filter medium layer substantially perpendicularly to the filter medium layer. However, such a vertical flow type cylindrical filter generally has a limited filtration area, so that the processing flow rate is small and the filter life is short.

On the other hand, as a vertical flow type flat filter, a filter comprising an aggregate of a plurality of cylindrical cells arranged in parallel with each other is known. For example, JP-A-6-7112
No. 8 discloses a filter 100 having a honeycomb structure as shown in FIG. The filter 100 shown in FIG. 9 is formed of a honeycomb structure in which a plurality of cylindrical cells 400 formed of a filter material sheet having air permeability or water permeability are assembled. In this filter, the cylindrical cell 40
The cell filter material wall 600 of 0 becomes the working surface, and the fluid to be treated is:
From one side of the filter 100, the cell filter medium wall 6
00, flows in a direction perpendicular to 00 (direction indicated by arrow A), and undergoes a filtration treatment when passing through the cell filter medium wall 600;
It flows out from the other opposite side surface of the filter 100 in a direction perpendicular to the cell filter medium wall 600 (direction indicated by arrow B). Since the filter shown in FIG. 9 is made of a honeycomb structure, it exhibits high rigidity (that is, excellent shape retention) and various excellent characteristics such as a large filtration area.

[0004] In order to impart excellent characteristics derived from such a honeycomb structure to a vertical flow type cylindrical filter, a long sheet (filter medium) made of the honeycomb structure is used.
It is conceivable to construct a vertical flow type cylindrical filter by winding the long sheet-shaped honeycomb structure around the hollow pipe as described above. However,
In a cylindrical filter using a long sheet made of such a honeycomb structure, each honeycomb structure is deformed (for example, becomes flat) due to a force applied by winding,
Desired properties (eg, shape retention or excellent filtration performance)
Are not obtained.

[0005]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to solve the above-mentioned drawbacks of the prior art, to obtain a desired filtration performance, to have a good shape retention and to provide a cylindrical filter having a large filtration area. An object of the present invention is to provide a filter member, a method for manufacturing the same, and a tubular filter including the tubular filter member.

[0006]

According to the present invention, there is provided a micro cylindrical cell according to the present invention, wherein (A) all side surfaces of each cell space are covered by a cylindrical filter medium wall, and both upper and lower surfaces are open. A filtration unit formed by assembling a plurality of the filtration units in a state where their length directions are substantially parallel to each other; and (B) provided at the center of the filtration unit, wherein the length direction is the length of the micro-cylindrical cell. A cylindrical vertical hole which is substantially parallel to the direction, is open on both the upper and lower surfaces, is surrounded on all sides by the filtration portion, and has an inner diameter larger than the inner diameter of the micro cylindrical cell. A cylindrical filter member; (1) a plurality of deformable micro-cylindrical cells whose cross-sectional shape in the width direction is deformable; Moreover, the opposing side surface for forming the outer side surface of the filtration portion and the inner side surface of the filtration portion One or more deformable micro-cylindrical cell aggregates having a side surface and two opposing connecting side surfaces are prepared, and (2) the deformable portion can be deformed in the direction along the side surface for forming the outer side surface of the filtration unit. In a direction substantially perpendicular to the length direction of the micro-cylindrical cell, by deforming the side surface for forming the outer side surface of the filtration unit, and changing the curvature of the side surface for forming the outer side surface of the filtration unit, the outer side of the filtration unit The side surface forming side forms the outer side surface of the filtration unit, and at the same time, in a direction along the filtration unit inner side surface forming side surface, and substantially perpendicular to the length direction of the deformable microtubular cell. In the direction, by deforming the side surface for forming the inner side surface of the filtration unit and changing the curvature of the side surface for forming the inner side surface of the filtration unit, the side surface for forming the inner side surface of the filtration unit forms the inner side surface of the filtration unit. , Said deformable micro cylindrical cell The aggregate is deformed, and (3A) when the number of deformable micro cylindrical cell aggregates to be used is one, one coupling side surface of the deformable micro cylindrical cell aggregate and the other coupling side Or (3B) when the number of deformable micro cylindrical cell aggregates to be used is two or more, the adjacent deformable micro cylindrical cell aggregates are formed. The cylindrical filter member is characterized in that the coupling side surfaces are connected to each other to integrally form a deformable micro cylindrical cell aggregate. Further, the present invention relates to a cylindrical filter including the cylindrical filter member, and a method for manufacturing the cylindrical filter member.

[0007] "Fluids" that can be processed by the tubular filter of the present invention include both liquids and gases.
In the present specification, an untreated fluid before filtration is performed by the cylindrical filter member (that is, before passing through the inflow surface of the filtration unit constituting the cylindrical filter member), and during the filtration process (that is, The fluid that is passing through the filtration unit) is referred to as a “fluid to be treated”, and the fluid that has been subjected to the filtration process by the tubular filter member (that is, after passing through the outflow surface of the filtration unit) is referred to as a “treatment fluid”. Name.

[0008] In the present specification, the "cylindrical vertical hole" has a typical function of, for example, being supplied from a suitable fluid supply means connected to the upper and / or lower surface of a cylindrical filter member. The fluid to be treated is passed, and the fluid to be treated is sent from the inner wall surface of the cylindrical vertical hole to the outer side surface of the cylindrical filter member via the micro cylindrical cell, or conversely, the outer side surface of the cylindrical filter member Is supplied to the cylindrical vertical hole via the micro-cylindrical cell and sent to a suitable processing fluid recovery means connected to the upper and / or lower surfaces of the cylindrical filter member. , Means a cylindrical space whose inner diameter is larger than the inner diameter of the micro cylindrical cell. The “inner diameter” of the cylindrical vertical hole means the diameter of the circle when the cross-sectional shape (in the width direction) is a circle, and the maximum dimension in the cross-sectional shape when the shape is other than a circle. Means Further, the “inner diameter” of the micro cylindrical cell means the average value of the maximum dimension in the cross-sectional shape of the micro cylindrical cell adjacent to the cylindrical vertical hole.

[0009] In the present specification, the term "micro cylindrical cell" refers to a "cylindrical filter medium wall" (that is, a cell filter medium wall).
And a hollow “cell space” surrounded by the cylindrical filter medium wall, and the entire side surface of the cylindrical hollow cell space is a filtration unit (ie, covered) surrounded by the cylindrical filter medium wall (cell filter medium wall). A minimum unit for performing a filtration process by passing a processing fluid through a cylindrical filter medium wall), and preferably a cylindrical shape whose cross-sectional shape in the width direction is substantially constant from the upper surface to the lower surface in the length direction. Having. In the present specification, a structure having a cylindrical shape (for example, a minute cylindrical cell, a cylindrical vertical hole,
In a cylindrical filter member or a cylindrical filter, the “length direction” means a direction (parallel) along the central axis of the structure, and the “width direction” refers to the “length”. direction"
Means the direction perpendicular to In addition, when the central axis does not exist or is not clear, the center of the upper surface (in the case where the center does not exist or is not clear,
The point corresponding to the center) and the center of the lower surface (if the center does not exist or is not clear, the point corresponding to the center)
Means the direction connecting

In this specification, the term “deformable microtubular cell” means that its cross-sectional shape (in the width direction) is
The term “micro cylindrical cell” means a micro cylindrical cell that can be deformed in a direction substantially perpendicular to the length direction, and can be the “micro cylindrical cell” by being deformed as described above. The “deformation” includes not only structural “deformation” but also
In the present invention, since the cell filter medium wall is made of a fibrous material, "deformation" of the material itself (for example, elongation by tension) is also included.

The term "deformable micro-tubular cell assembly" means that a plurality of the above-mentioned "deformable micro-tubular cells" are arranged in such a manner that their length directions are substantially parallel to each other, And an assembly having no cylindrical vertical hole formed therein, wherein one side for forming an outer side surface of the filtration unit and one side for forming an inner side surface of the filtration unit.
An assembly having a surface and two side surfaces for coupling, and wherein the side surface for forming the outer side surface of the filtration unit and the side surface for forming the inner side surface of the filtration unit are opposed to each other, and the two side surfaces for coupling are opposed to each other. Means In addition, as long as the “deformable micro cylindrical cell aggregate” can form a “micro cylindrical cell” composed of a “cylindrical filter medium wall” and a “cell space” after deformation,
In the pre-deformation state, at least “deformable microtubular cells” in which the cylindrical filter media walls are in contact with each other and have substantially no cell space (ie, there is a “potential” cell space). A cell aggregate included as a part (including all cases) is also included. "Deformable micro cylindrical cell aggregate"
Preferably assembles micro-cylindrical cells of substantially the same length such that their upper and lower surfaces form substantially the same plane.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a tubular filter member of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a perspective view of one embodiment of the tubular filter member of the present invention as viewed from above, and FIG. 2 is a view showing a part 1a (a broken line portion of FIG. 1) of the upper surface of the tubular filter member 1. FIG. 3 is an enlarged partial plan view of the tubular filter member 1 cut out and viewed from the upper surface side. FIG. It is a top view.

The cylindrical filter member 1 shown in FIGS.
Filtration unit 2 composed of a group of microtubular cells having a honeycomb structure
And a central through-hole 3 provided at the center of the filtration unit 2. The central through-hole 3 penetrates from the upper surface 11 to the lower surface 12 of the cylindrical filter member 1 and functions as a cylindrical vertical hole in the cylindrical filter member of the present invention. The filtration unit 2 includes:
It is composed of a plurality of filter medium plates arranged from the inner side surface 22 of the filtration unit 2 to the outer side surface 21 of the filtration unit 2. The filter media plates forming the filter section 2 are all bent filter media plates (that is, the peaks and valleys are periodically repeated except for two planar filter media plates 63a and 63b arranged adjacent to each other. Media plate having a structure in which a planar filter media plate is bent
It is one.

Each of the folded filter plates 61 is provided with portions alternately connected to the adjacent folded filter plates and portions not connected to the adjacent folded filter plates. For example, as shown in FIG. 2, the folded filter medium plate 61a is partially connected to the adjacent one of the folded filter medium plates 61b at the contact surface 62x, and then is partially connected to the other adjacent folded filter medium plate 61c at the contact surface 62y. Between the adjacent bent filter media plates 61
There is a region that does not bind to any of b and 61c.

On the other hand, two flat filter media plates 63a, 63b
Are fully connected to each other at the contact surface 64 and partially connected to the adjacent folded filter media plate at the opposite surface. For example, as shown in FIG. 3, the planar filter medium plate 63a has a non-joined portion after being connected to the adjacent bent filter medium plate 61d at the contact surface 65x, and is again joined at the contact surface 65y. Between the contact surface 65x and the contact surface 65y, there is a region that is not connected to the adjacent folded filter medium plate 61d. On the other hand, the flat filter medium plate 63a has an opposite surface to the adjacent flat filter medium plate 63b and the contact surface 64b.
Is fully combined.

The cell space 5 in each of the micro-cylindrical cells 4 constituting the honeycomb structure of the filtering section 2 is folded on all sides and surrounded by a filter medium plate 61 and / or a plane filter medium plate 63. And flat filter media plate 63
Functions as a cylindrical filter medium wall (cell filter medium wall) 6 in the cylindrical filter member according to the present invention. The honeycomb structure of the filter unit 2 is configured such that the contact surfaces of the adjacent filter media plates (that is, the contact surfaces 62 between the bent filter media plates and the folded filter media plates, the contact surfaces 64 between the flat filter media plates and the flat filter media plates, or the bent surfaces) The contact surface 65 between the filter medium plate and the flat filter medium plate is held by fixing using an appropriate means (for example, adhesion or heat fusion or ultrasonic fusion).

The cylindrical filter member 1 shown in FIGS.
As will be apparent from the description of the manufacturing method described later, a deformable micro-tubular cell assembly in which all the micro-cylindrical cells have the same shape and size (for example, the deformable micro-tubular cell assembly shown in FIG. 4) 9) is formed by structurally deforming, so that the micro cylindrical cell located relatively inside (for example, the micro cylindrical cell 4a adjacent to the inner side surface 22 of the filtration unit 2) is relatively The micro cylindrical cell located on the outside (for example, the micro cylindrical cell 4 adjacent to the outer side surface 21 of the filtration unit 2)
Comparison with b) shows a difference in the shape of these microtubular cells.

For example, with respect to the circumferential length in the cross-sectional shape in the width direction of the micro-cylindrical cell, the circumferential length L ₁ of the micro-cylindrical cell 4a located on the inner side is located on the outer side. shorter than the circumferential length L ₂ of the micro-tubular cell 4b to be. Regarding the radial length of the micro-cylindrical cell in the cross-sectional shape in the width direction, the radial length L ′ ₁ of the micro-cylindrical cell 4a located inside is smaller than the micro-cylindrical shape located outside. It is longer than the radial length L' ₂ of the cell 4b. Furthermore, in the hexagon which is the cross-sectional shape of the micro cylindrical cell, 6
Regarding the inner angle of the inner side surface 22 side of the filtration unit among the inner angles, the angle θ ₁ of the inner angle of the micro cylindrical cell 4a located on the inner side is the inner angle of the micro cylindrical cell 4b positioned on the outer side. Is smaller than the angle θ ₂ .

In the tubular filter member 1 shown in FIGS. 1 and 2, the cell space of each micro tubular cell 4 in the filtration section 2 penetrates from the upper surface 11 to the lower surface 12 of the tubular filter member 1 and The cell spaces of the micro-cylindrical cells 4 are substantially parallel to each other in the length direction. Furthermore,
The cell space of each micro-cylindrical cell 4 is also substantially parallel to the central through-hole 3.

In the tubular filter member 1, the fluid to be treated is directed from the outer side surface 21 of the filter portion 2 toward the center through hole 3 (hereinafter, may be referred to as a centripetal direction) or in the opposite direction. That is, a filtration process is performed when passing through the filtration unit 2 from the central through-hole 3 toward the outer side surface 21 of the filtration unit 2 (hereinafter, may be referred to as a centrifugal direction) to obtain a processing fluid. be able to. When the fluid to be treated is passed in the centripetal direction, the outer side surface 21 of the filtration unit 2 becomes the fluid inflow surface, and the surface (inner side surface) 22 exposed to the central through hole 3 of the filtration unit 2 is the treatment fluid outflow surface. Becomes On the other hand, when the fluid to be processed is passed in the centrifugal direction, the inner side surface 22 of the filtration unit 2 becomes the inflow surface of the fluid to be processed, and the outer side surface 21 of the filtration unit 2 becomes the outflow surface of the processing fluid.

FIGS. 4 and 5 show a deformable micro cylindrical cell assembly which can be used to manufacture the cylindrical filter member 1 shown in FIGS. 1 to 3 which is one embodiment of the present invention. FIG. 4 is a perspective view of the deformable microtubular cell assembly 9 as viewed from the top side, and FIG. 5 is a portion 9a of the upper surface of the deformable microtubular cell assembly 9 (a broken line portion in FIG. 4). ) Is an enlarged partial plan view as viewed from the upper surface side.

As shown in FIGS. 4 and 5, the deformable microtubular cell assembly 9 is composed of a group of deformable microtubular cells having a honeycomb structure in which a plurality of filter media plates are stacked.
Of the stacked filter media plates, the filter media plates located at the outermost layers at both ends are planar filter media plates 63p and 63q, and the remaining filter media plates are all bent filter media plates 61.

As shown in FIG. 4, the deformable microtubular cell aggregate 9 has an upper surface and an opposing lower surface, and two sets of opposing side surfaces exist. The coupling side surfaces 93a and 93b, which are combinations of one of the side surfaces, are smooth surfaces formed of the outer surfaces of the planar filter plates 63p and 63q located on the outermost layer of the stacked filter plates. In addition, the side surface 94 for forming the inner side surface of the filtration unit and the side surface 95 for forming the outer side surface of the filtration unit, which are combinations of the other side surfaces, are exposed surfaces of the end region 66 not functioning as the cylindrical filter medium wall in the folded filter medium plate. And an exposed surface on the peripheral space side of the cell filter medium wall 67, which is exposed to the cell space as well as the surrounding space among the cell filter medium walls forming the deformable micro cylindrical cell 4′a adjacent to the end region. Consists of In addition, the side surface 94 for forming the filtration unit inner side surface and the side surface 95 for forming the filtration unit outer side surface in the deformable microtubular cell aggregate 9 shown in FIGS. 4 and 5 are the side surfaces including the end region 66. In the present invention, the side surface for forming the inner side surface of the filtration unit and / or the side surface for forming the outer side surface of the filtration unit is a side surface consisting only of the exposed surface on the peripheral space side of the cell filter medium wall which is also exposed to the cell space and the surrounding space at the same time. Can also be

The cell space of each of the deformable micro cylindrical cells 4 ′ constituting the deformable micro cylindrical cell assembly 9 penetrates from the upper surface 91 to the lower surface 92 of the deformable micro cylindrical cell assembly 9. The cell spaces of the deformable microtubular cells 4 'are substantially parallel to each other with respect to their length direction.
The cell space 5 in each deformable micro-cylindrical cell 4 ′ is surrounded on all sides by a bent filter medium plate 61 and / or a plane filter medium plate 63, and the bent filter medium plate 61 and the plane filter medium plate 63 are It functions as a cylindrical filter medium wall (cell filter medium wall) 6.

Each of the folded filter plates 61 is provided with portions alternately connected to the adjacent folded filter plates and portions not connected to the adjacent folded filter plates. For example, as shown in FIG. 5, the folded filter medium plate 61p is partially connected to the adjacent one of the folded filter medium plates 61q at the contact surface 62z, and then is partially connected to the other adjacent bent filter medium plate 61r and the contact surface 62u. Between the adjacent bent filter media plates 61
There is a region that does not bind to any of q and 61r. On the other hand, since each of the two planar filter media plates 63p and 63q is located on the outermost layer of the deformable microtubular cell aggregate 9, the outer surface thereof is formed of any of the filter media plates (the planar filter media plate and the folded filter media). Not include the plate), and on the opposite side,
It is partially connected to an adjacent folded filter media plate.

Each of the deformable microtubular cells 4 'has a cross-sectional shape in the width direction other than the deformable microtubular cell in which at least a part of the side surface of the cell space is surrounded by a flat filter medium plate. It is hexagonal. A deformable micro-cylindrical cell having a hexagonal cross section has a cell space surrounded on all sides by a folded filter medium plate, and has a cross section (width direction) substantially perpendicular to its length direction. ) Can be structurally modified (ie, a structure-dependent deformation).

For example, in the deformable micro cylindrical cell assembly 9 shown in FIGS. 4 and 5, the deformable micro cylindrical cell 4 '
In FIG. 4A, a direction substantially perpendicular to the longitudinal direction and along a direction 94 (or an arrow 95 in FIGS. 4 and 5) along the side surface 94 for forming the inner side surface of the filtration unit (or the side surface 95 for forming the outer side surface of the filtration unit). When a compressive force is applied in the direction indicated by C and arrow D), (1) the side surface 94 for forming the inner side surface of the filtration unit (or the side surface 9 for forming the outer side surface of the filtration unit) in the cross-sectional shape in its width direction
5) the direction of the length L ₃ becomes smaller along, (2) in the width direction of the cross-sectional shape, in a direction along the filtration unit inner side forming side 94 (or the filtration unit outer side forming side 95) The length L ′ ₃ in the direction substantially perpendicular to the direction becomes large, and (3) in the direction substantially parallel to the flat filter medium plate 63 among the six interior angles in the hexagonal cross section. The deformable micro cylindrical cell 4′a can be structurally deformed so that the angle θ _{3 of the} located inner angle (for example, the inner angle on the side surface 94 for forming the inner side surface of the filtration unit) becomes smaller.

On the other hand, the deformable micro cylindrical cell 4'a
The force in the opposite direction, that is, in the direction substantially perpendicular to the longitudinal direction, and along the side surface 94 for forming the inner side surface of the filtration unit (or the side surface 95 for forming the outer side surface of the filtration unit). When a force for stretching in the direction (the direction indicated by the arrows E and F in FIGS. 4 and 5) is applied, (1) the side surface 94 for forming the inner side surface of the filtration unit (or the outer side surface formation of the filtration unit) in the cross-sectional shape in the width direction. The length L ₃ in the direction along the filter side surface 95) is increased, and (2) along the filter portion inner side surface forming side surface 94 (or the filter portion outer side surface forming side surface 95) in the cross-sectional shape in the width direction. The length L ′ ₃ in the direction substantially perpendicular to the direction becomes smaller, and (3) out of the six interior angles in the hexagonal cross section, substantially parallel to the flat filter medium plate 63. Inside angle (for example, for forming the inner side surface of the filtration unit) As the angle theta ₃ face 94 side of the interior angle) increases, the deformable small cylindrical cell 4'a can be structurally deformed.

As described above, all the deformable micro cylindrical cells included in the deformable micro cylindrical cell assembly 9 shown in FIGS. 4 and 5 are arranged in a direction substantially perpendicular to the length direction. The cross-sectional shape (in the width direction) is deformable, and is deformable by applying a force (including both a compressing force and a stretching force) substantially perpendicular to its length direction. In this case, the end of the deformable micro-tubular cell assembly (that is, the region including the deformable micro-tubular cell having a trapezoidal cross-sectional shape) and the central portion of the deformable micro-tubular cell assembly. (That is, a region including only a deformable microtubular cell having a hexagonal cross-sectional shape)
Since the degree of deformation is different, a strain is generated between the end portion and the center portion, and this strain is absorbed as the whole deformable microtubular cell aggregate.

The deformable micro-tubular cell assembly 9 shown in FIGS. 4 and 5 is deformed and then connected to the connecting side surfaces to form the cylindrical filter shown in FIGS. A process for manufacturing the member 1 will be described. Among the opposing side surfaces 94 for forming the inner side surface of the filtration unit and the side surface 95 for forming the outer side surface of the filtration unit, the deformable micro cylindrical cells 4 ′ a exposed on the side surface 94 for forming the inner side surface of the filtration unit have their lengths. In a direction substantially perpendicular to the direction and along the side surface 94 for forming the inner side surface of the filtration portion (the direction indicated by arrows C and D in FIGS. 4 and 5),
At the same time, the deformable micro-cylindrical cells 4 ′ b exposed on the side surface 95 for forming the outer side surface of the filtration unit are formed in a direction substantially perpendicular to the length direction thereof, and the outer side surface of the filtration unit is formed. 4 and 5 so as to be stretched in the direction along the side surface 95 (the direction indicated by arrows E and F in FIGS. 4 and 5).
To transform. In this case, the deformable micro cylindrical cell aggregate 9 is deformed so as not to change the relative positional relationship between the upper surface 91 and the lower surface 92 of the deformable micro cylindrical cell aggregate 9 and the distance between both surfaces. .

The deformable micro cylindrical cell aggregate 9 in the middle of deformation
Is shown in FIG. FIG. 6 shows a state in the middle of the deformation,
FIG. 6 is a perspective view of the deformable microtubular cell assembly 9 shown in FIG. 5 as viewed from above. FIG. 6 is intended to show the shape and positional relationship of each surface of the deformable micro-tubular cell assembly 9 in the process of being deformed. Outside side surface forming side surface 9
The cell filter medium wall shown in FIG. 5 was omitted from illustration.

The deformable micro cylindrical cell assembly 9 shown in FIG.
Then, the side surface 94 for forming the inner side surface of the filtering portion is compressed and shrunk to such an extent that the side surfaces 93a and 93b for coupling which are opposed to each other and are in a parallel relationship with each other before the deformation are located on the same plane. The outer side surface forming side surface 95 is stretched. The curvature of the filtering portion inner side surface forming side surface 94 and the filtering portion outer side surface forming side surface 95 of the deformable microtubular cell aggregate 9 in the state shown in FIG.
0), the side surface 94 for forming the inner side surface of the filtration portion has a concave shape, while the side surface 95 for forming the outer side surface of the filtration portion has a convex shape. In this specification, the "curvature" is the reciprocal of the radius of a circle that best approximates a curve at a given point. The “curvature of the side surface for forming the inner side surface of the filtration unit (or the side surface for forming the outer side surface of the filtration unit)” refers to the shape of the side surface for forming the inner side surface of the filtration unit (or the side surface for forming the outer side surface of the filtration unit). It refers to the curvature of the curve of the cut edge generated when cutting is performed on a plane substantially perpendicular to the length direction of the cell.

When the deformable micro-cylindrical cell assembly 9 is further deformed from the state shown in FIG. 6, the connecting side surface 93a and the connecting side surface 93b can be brought into contact over the entire surface, and at the same time, the filtering section It is possible to form a cylindrical vertical hole which is surrounded on all sides by the deformable micro cylindrical cell 4′a exposed on the inner side surface forming side surface 94 and has an inner diameter larger than the inner diameter of the deformable micro cylindrical cell. While maintaining this state, the connecting side surface 93a (that is, the outer surface of the planar filter medium plate 63p) and the connecting side surface 93b (that is, the outer surface of the planar filter medium plate 63q) are brought into contact with appropriate means ( For example, the cylindrical filter member 1 shown in FIGS. 1 to 3 can be obtained by fixing using bonding, heat fusion, ultrasonic fusion, or the like.

In this case, the side surface 94 for forming the inner side surface of the filtering portion in the deformable micro cylindrical cell assembly 9 shown in FIGS. 4 and 5 becomes the inner side surface 22 in the cylindrical filter member 1 shown in FIGS. The side surface 95 for forming the outer surface of the filtering portion in the deformable micro cylindrical cell assembly 9 becomes the outer side surface 21 in the cylindrical filter member 1, and the upper surface 91 and the lower surface 92 in the deformable micro cylindrical cell assembly 9 are respectively , Upper surface 11 and lower surface 12 of cylindrical filter member 1
Becomes Also, the planar filter media plates 63p and 63q in the deformable micro cylindrical cell aggregate 9 become the planar filter media plates 63a and 63b in the cylindrical filter member 1, and the coupling side surface 93a in the deformable micro cylindrical cell aggregate 9 (That is, the outer surface of the flat filter medium plate 63p) and the connecting side surface 93.
The connection surface with b (that is, the outer surface of the flat filter medium plate 63q) becomes the contact surface 64 of the cylindrical filter member 1.

The deformable micro cylindrical cell assembly which can be used to manufacture the cylindrical filter member of the present invention is a collection of a plurality of deformable micro cylindrical cells whose cross section in the width direction is deformable. It is a cell aggregate consisting of As such a deformable micro-tubular cell aggregate, for example, a deformable micro-tube in which the cross-sectional shape (in the width direction) of the micro-cylindrical cell is a polygon [for example, a square (especially a rhombus) or a hexagon] And a honeycomb structure formed of a group of cells. Further, each of the deformable micro cylindrical cells constituting the deformable micro cylindrical cell aggregate may be all micro cylindrical cells having the same shape and size.
Alternatively, two or more types of microtubular cells having different sizes can be used. Further, the arrangement of the deformable micro cylindrical cells constituting the deformable micro cylindrical cell aggregate can be arranged regularly or irregularly.

The shape of the deformable micro-cylindrical cell assembly itself can be a shape that can have opposing side surfaces for forming the filter portion outer side surface and the opposing side surface for forming the filter portion, and two opposing coupling side surfaces. Is not particularly limited, as long as, for example, a substantially rectangular parallelepiped shape, or the side surface for forming the outer side surface of the filtering portion is a convex curved surface, the side surface for forming the inner side surface of the filtering portion is a concave curved surface, and the remaining four surfaces May be a hexahedral shape (for example, the shape shown in FIG. 6) in which is a plane.

The deformable micro-cylindrical cell aggregate which can be used in the present invention is prepared by a known method, for example, a known fixing means (for example, bonding or heat fusion or ultrasonic fusion).
By properly fixing between the filter media sheets, or
It can be manufactured using a method of corrugating using an elastic material.

When the tubular filter member of the present invention is manufactured, as described above, it can be manufactured from one deformable micro cylindrical cell aggregate, or
It can also be manufactured from a plurality of deformable microtubular cell aggregates. For example, when a plurality of deformable micro cylindrical cell aggregates are used, each of the deformable micro cylindrical cell aggregates is first placed in the deformable micro cylindrical cell aggregate 9 shown in FIGS. After being deformed in the same manner as described (for example, FIG. 6), the connecting side surfaces of adjacent deformable microtubular cell assemblies are connected to each other to form a plurality of deformable microtubular cell assemblies. By integrating the bodies, the tubular filter member of the present invention can be obtained.

As is apparent from the above description, in the manufacturing method of the present invention, the curvature (the deformable microscopic side surface) of the side surface for forming the outer side surface of the filter portion and the side surface for forming the inner side surface of the filter portion of the deformable microscopic cylindrical cell assembly is determined. The deformable micro cylindrical cell aggregate is deformed so as to change its curvature in a direction substantially perpendicular to the length direction of the cylindrical cell. In the present invention, the curvature is generally changed so as to increase the curvature, but the curvature may be changed so as to decrease the curvature.

For example, in the deformable microtubular cell aggregate having a rectangular parallelepiped shape shown in FIGS.
The tubular filter member of the present invention can be obtained by deforming the deformable micro-tubular cell assembly so as to have a large curvature (ie, a flat surface). On the other hand, as an example in which the curvature is changed to be small, there is a case where the tubular filter member of the present invention is manufactured from a plurality of deformable minute tubular cell aggregates. For example, a deformable micro-tubular cell aggregate is used in which the curvatures of the filtering portion outer side surface forming side surface and the filtering portion inner side surface forming side surface are larger than the curvature of the outer side surface and the inner side surface of the cylindrical filter member to be manufactured. In such a case, it is necessary to deform the deformable micro cylindrical cell aggregate so that the curvature becomes small.

In the manufacturing method of the present invention, the deformable micro-tubular cell assembly is changed by changing the curvatures of the side surface for forming the outer side surface of the filtering portion and the side surface for forming the inner side surface of the filtering portion of the deformable micro-cylindrical cell assembly. When deformed, as described above with reference to FIGS. 4 to 6, (1) the deformable micro cylindrical cell exposed on the side surface for forming the inner side surface of the filtration unit is compressed and shrunk,
In addition, the deformable micro cylindrical cell exposed on the side surface for forming the outer side surface of the filtration unit can be deformed so as to be stretched, or (2) the deformable micro cylindrical cell exposed on the side surface for forming the inner side surface of the filtration unit; And both the deformable micro cylindrical cell exposed on the side surface for forming the filtration unit outer side surface can be deformed so as to be stretched, and (3) the deformable micro cylindrical cell exposed on the side surface for forming the filtration unit inner side surface; It is also possible to deform both the deformable microtubular cells exposed on the side surface for forming the outer side surface of the filtering portion so as to compress them.

When both the deformable micro cylindrical cells exposed on the side surface for forming the inner side surface of the filtration unit and the deformable micro cylindrical cells exposed on the side surface for forming the outer side surface of the filtration unit are deformed so as to be stretched [(2) Case)), an example of a deformable micro-tubular cell aggregate in which only deformable micro-cylindrical cells in which a cell space does not substantially exist (a “latent” cell space exists) is collected Can be used. In this case, both the deformable micro cylindrical cells exposed on the filtering unit inner side surface forming side surface and the deformable micro cylindrical cells exposed on the filtering unit outer side surface forming side are larger than the former degree of stretching. The tubular filter member of the present invention can be obtained by stretching the latter so as to increase the degree of stretching and deforming the deformable microtubular cell aggregate.

When both the deformable micro cylindrical cells exposed on the side surface for forming the inner side surface of the filtration unit and the deformable micro cylindrical cells exposed on the side surface for forming the outer side surface of the filtration unit are deformed so as to compress and contract [ In the case of 3)], the cell space is almost at its limit in the direction along the side surface for forming the inner side surface of the filtration unit and the side surface for forming the outer side surface of the filtration unit (that is,
A case where a deformable micro-tubular cell aggregate formed by assembling only deformable micro-tubular cells that have been stretched (to the extent that they cannot be further stretched) can be used. In this case, the deformable micro cylindrical cells exposed on the side surface for forming the inner side surface of the filtration unit and the deformable micro cylindrical cells exposed on the side surface for forming the outer side surface of the filtration unit are both compressed and deformed. By deforming the cylindrical cell assembly, the cylindrical filter member of the present invention can be obtained.

The cross-sectional shape (in the width direction) of the micro cylindrical cell in the cylindrical filter member of the present invention is not particularly limited as long as it can be formed by the above-described manufacturing method. A square shape (for example, a square shape (especially, a rhombus shape) or a hexagon shape) can be given. In addition, each micro cylindrical cell may be a micro cylindrical cell having the same shape and size, or may be two or more types of micro cylindrical cells having different shapes and / or sizes.

When the cylindrical filter member of the present invention is manufactured by using the deformable micro cylindrical cell assembly in which the shape and size of each deformable micro cylindrical cell are all the same, the filtering section of the cylindrical filter member , The density of the filter medium plate becomes uneven. That is, the closer the filter medium plate is to the outer surface, the lower the density of the filter medium plate is, and the closer to the inner surface of the filter section, the higher the density of the filter medium plate is. Therefore, when the fluid to be processed is passed through the filtration unit from the outer side surface of the filtration unit toward the central through-hole, solids having a large particle size are generated in a region near the outer surface where the density of the filter medium plate is low. Only the solid matter that has been collected first and has a small particle diameter reaches a region near the inner surface where the density of the filter medium plate is high, and is collected there, so that the fluid to be treated having a wide particle size distribution is filtered. Not only can you
The service life of the cylindrical filter member can be extended.

The upper and lower surfaces of the individual micro-cylindrical cells constituting the filtering portion of the cylindrical filter member according to the present invention are open surfaces as is apparent from the above-mentioned manufacturing method.
By further processing the obtained cylindrical filter member, the upper surface and / or the lower surface can be closed. For example, when both the upper surface and the lower surface of the micro-cylindrical cell are open surfaces, the cell space of the micro-cylindrical cell extends from the upper surface to the lower surface in the length direction of the filtration part (direction from the upper surface to the lower surface). It becomes an extended through hole. On the other hand, after the deformation and coupling of the deformable microtubular cell aggregate is completed, the upper surface and / or
Or the lower surface, by the same filter medium material as the cylindrical filter medium wall,
Alternatively, by closing with a suitable sealing means,
As described above, the upper surface and / or the lower surface (coincident with the upper surface and / or the lower surface of the filtering unit) of the cell space of one micro tubular cell extending from the upper surface to the lower surface in the length direction of the filtering unit can be closed. . It is not necessary that both of the upper and lower surfaces of the individual micro-cylindrical cells constituting the filtering section of the cylindrical filter member according to the present invention be both open and closed at the same time.

In the tubular filter member of the present invention, means for fixing adjacent filter medium sheets to each other in order to form the fine tubular cells is not particularly limited.
Known fixing means (for example, adhesion, heat fusion, ultrasonic fusion, or the like) can be appropriately used depending on the type of the filter material forming the filtration unit. For example, when a sheet containing thermoplastic fibers is used as the filter medium sheet, it is necessary to perform ultrasonic fusion at a point that impurities do not remain in the filtration section and the fusion area is small (the decrease in the effective filtration area is small). Is preferred.

The filter medium wall of the tubular filter member of the present invention may be made of any conventionally known filter medium material, for example, a fibrous material (for example, a knitted fabric, a woven fabric, a nonwoven fabric, a paper, or a composite thereof), a net, It can be formed from a perforated film, a membrane, or the like, and these can be used alone or in combination.

In the tubular filter member of the present invention, the above-mentioned filter medium wall can be formed not only from a normal filter medium material but also from a functional filter medium material. It can also be formed from a material for a filter medium holding a substance (functional substance). Examples of the functionality include a gas purifying property, a dye purifying property, a metal ion adsorbing property, a microorganism adsorbing property, a deodorizing property, an antibacterial property, an antifungal property, a hydrophilic property, and an antistatic property. The material for a filter medium having a function can be formed, for example, from a material having a function (for example, activated carbon fiber), or can be prepared by kneading a functional substance into, for example, a fiber. Can be prepared by, for example, adsorbing or impregnating the filter material with a functional substance. In addition, in order to increase the particle retention, a material for a filter medium that has been subjected to a discharge treatment (for example, an electret treatment or a plasma treatment) can be used.

Further, a filter material (for example, a gas purifying substance, a dye purifying substance, a metal ion adsorbing substance, a microorganism adsorbing substance, a deodorant, an antibacterial agent) is provided in the cell space of the micro cylindrical cell in the cylindrical filter member of the present invention. , A fungicide, a hydrophilizing agent, or an antistatic agent). In this case, it is preferable to close both the upper and lower surfaces of the micro-cylindrical cell filled with the filtering material. In addition, a discharge treatment (for example, an electret treatment or a plasma treatment) is performed on the filter material.
Can be applied to enhance the particle retention. When the filter material is filled in the cell space, the filter material can be filled in all of the micro cylindrical cells constituting the filtration unit of the cylindrical filter member, or the filter material can be filled in some of the micro cylindrical cells. Can also be filled. In addition, the type and / or amount of the filtering material to be filled in the cell space can be all the same in the micro cylindrical cells to be filled with the filtering material, or can be changed. For example, by changing the amount of the filtering material to be filled in each cell space to provide a density difference, the flow rate can be increased and the service life of the cylindrical filter member can be extended.

In the tubular filter member of the present invention, a tubular vertical hole is provided at the center of the filtering section. The cylindrical vertical hole is provided so that its length direction is substantially parallel to the length direction of each micro-cylindrical cell. According to the above-described manufacturing method, one cylindrical vertical hole having a circular cross-sectional shape is formed in the center of the filtration unit, and therefore, other cross-sectional shapes [for example, an elliptical shape or a polygonal shape, For example, when a triangle, a parallelogram (for example, a square, a rectangle, a rhombus, or a trapezoid), or a hexagon) is adopted, a desired shape may be obtained after the deformation and fixing of the deformable microtubular cell assembly are completed. Thus, the cross-sectional shape of the cylindrical vertical hole can be changed by performing an appropriate cutting and removing process or by applying a shape holder that can be provided on the inner side surface of the filtration unit.

In the tubular filter member according to the present invention,
Both the upper surface and the lower surface of the cylindrical vertical hole are open surfaces as is clear from the above-mentioned manufacturing method, but if desired, by further processing the obtained cylindrical filter member, either the upper surface or the lower surface Only the opening surface may be used, and the remaining one may be closed. For example, when both the upper surface and the lower surface of the cylindrical vertical hole are open surfaces, the cylindrical vertical hole extends from the upper surface to the lower surface in the length direction of the cylindrical filter member (the direction from the upper surface to the lower surface). It becomes a through hole. On the other hand, after the deformation and fixation of the deformable micro cylindrical cell aggregate is completed, the upper surface and / or the lower surface are closed by a filter material similar to the cylindrical filter medium wall, or by a suitable sealing means, As described above, either the upper surface or the lower surface (corresponding to the upper surface or the lower surface of the cylindrical filter member) of the cylindrical vertical hole extending from the upper surface to the lower surface in the length direction of the cylindrical filter member can be closed. Also, in some cases,
A hard tube (hollow pipe) having a large number of fluid passage pores on its side wall is inserted into a cylindrical vertical hole of a cylindrical filter member, and an inner wall surface of a filtering portion of the cylindrical filter member and an outer side surface of the hard tube And can be provided in contact with each other.

As is apparent from the above description, in the tubular filter member of the present invention, since the filtering section is composed of a group of minute cylindrical cells (for example, a honeycomb structure cell group), the shape of the minute cylindrical cell is reduced. Various properties derived therefrom, for example, excellent shape retention or desired filtration performance can be obtained.

The cylindrical filter member of the present invention can be used alone to form a cylindrical filter, a plurality of cylindrical filter members can be combined to form a cylindrical filter, or A known tubular filter member (for example, a tubular filter member obtained by folding a filter material) may be used as a tubular filter. Further, as described above, a cylindrical filter in which a filter material is filled in the cell space of the micro cylindrical cell can be used. When a plurality of cylindrical filter members of the present invention are used in combination, only cylindrical filter members having the same filtration characteristics can be combined, or two or more types of cylindrical filter members having different filtration characteristics can be combined. It can also be used. Further, in the tubular filter of the present invention, a plurality of the tubular filter members of the present invention alone may be used in combination, or as long as at least one of the tubular filter members of the present invention is included. It is also possible to use a combination of a plurality of the above-mentioned tubular filter members and conventionally known tubular filter members.

One embodiment of such a cylindrical filter of the present invention is schematically shown in FIG. FIG. 7 is a schematic plan view of the cylindrical filter 10 of the present invention viewed from the upper surface 11 thereof. Note that, since FIG. 7 is intended to show the positional relationship between the respective cylindrical filter members constituting the cylindrical filter 10, the minute cylindrical cells included in the filtration unit are omitted from the drawing. The cylindrical filter 10 shown in FIG. 7 includes two cylindrical filter members having different filtering characteristics, that is, a cylindrical filter member 1a located on the outside and a cylindrical filter member 1b located on the inside.
Consists of The inner cylindrical filter member 1b includes a filtering portion 2b and a central through-hole (cylindrical vertical hole) 3. The outer cylindrical filter member 1a includes the filtering portion 2a and a central through-hole (inside thereof). Cylindrical vertical hole). The inner diameter of the filtering portion 2a of the outer cylindrical filter member 1a substantially matches the outer diameter of the filtering portion 2b of the inner cylindrical filter member 1b, and the inner side surface 22a of the filtering portion 2a is Part 2b
The cylindrical filter member 1b is fitted into the central through-hole (cylindrical vertical hole) of the cylindrical filter member 1a so that the outer side surface 21b of the cylindrical filter member 1b is in close contact with the outer side surface 21b.

In the case where the cylindrical filter 10 shown in FIG. 7 is used so that the fluid to be processed passes in the centripetal direction, for example, the filtering portion of the outer cylindrical filter member 1a is formed using a coarse filter material. 2a is formed, and the filtering portion 2b of the inner cylindrical filter member 1b is formed using a filter material having a finer mesh than the outer cylindrical filter member 1a. First, when the fluid to be treated passes through the outer filtration unit 2a, particles having a large particle size are collected from the collection target particles, and then, when passing through the inner filtration unit 2b, the particles having a small particle size are collected. Particles are collected.
Since most of the particles having a large particle diameter have already been removed from the fluid to be processed passing through the inside filtration section 2b, clogging of the inside filtration section 2b due to the particles having a large particle diameter can be significantly reduced, and The life of the filter 10 can be extended. When the fluid to be processed is passed in the centrifugal direction, the filtering portion 2b of the inner cylindrical filter member 1b is formed using a coarse filter material, and the inner cylindrical filter member 1b is formed.
The same effect can be obtained by forming the filtering portion 2a of the outer cylindrical filter member 1a using a filter material having a finer grain than b.

In the tubular filter of the present invention, the tubular filter member of the present invention may be a filtering member capable of forming a known filter (for example, a known filter that does not include micro tubular cells) and / or a known auxiliary. The components can be further combined. For example, FIG. 8 shows an embodiment in which a sheet-shaped filter medium, which is a filter member capable of forming a known filter that does not include micro cylindrical cells, is combined with the cylindrical filter member of the present invention. FIG. 8 is a schematic plan view of the cylindrical filter 10 of the present invention viewed from the upper surface 11 thereof. Note that, since FIG. 8 is intended to show the positional relationship between the respective cylindrical filter members constituting the cylindrical filter 10, the minute cylindrical cells included in the filtering unit are omitted from the drawing. In the tubular filter 10 shown in FIG.
, A sheet-shaped filter medium 8 is provided by being wound. By providing the sheet-like filter medium 8, the shape retention can be improved and the service life can be extended.

The above-mentioned known auxiliary members that can be combined in the cylindrical filter of the present invention include, for example, a large number of fluid passage pores which can be provided in close contact with the inside of a cylindrical vertical hole. Hard pipe (hollow pipe),
A shape-retaining material that can be provided in close contact with the outer side surface of the filtration portion, an end cap that can seal the upper surface and / or lower surface of the cylindrical filter member or the cylindrical filter, and the like can be given.

[0059]

According to the cylindrical filter member of the present invention, since the filtering portion is composed of a group of minute cylindrical cells, characteristics derived from the shape of the minute cylindrical cells (for example, shape retention and / or excellent filtration performance) Having. Further, according to the cylindrical filter member of the present invention, a fluid to be treated having a wide range of particle size distribution can be filtered. Furthermore, since the cylindrical filter member of the present invention does not require the provision of a shape-retaining material, it is possible to increase the filtration area of the cylindrical filter member and extend the service life. Further, according to the manufacturing method of the present invention, the tubular filter member of the present invention having such excellent effects can be manufactured.

[Brief description of the drawings]

FIG. 1 is a perspective view of a cylindrical filter member according to one embodiment of the present invention, as viewed from above.

FIG. 2 is an enlarged partial plan view of a part of the cylindrical filter member of FIG. 1 as viewed from an upper surface side.

FIG. 3 is an enlarged partial plan view of another part of the cylindrical filter member of FIG. 1 as viewed from above.

FIG. 4 is a perspective view of a deformable microtubular cell aggregate that can be used in the method for manufacturing a cylindrical filter member of the present invention, as viewed from above.

FIG. 5 is an enlarged partial plan view of a part of the deformable microtubular cell assembly of FIG. 4 as viewed from above.

FIG. 6 is a perspective view of the deformable microtubular cell aggregate of FIG. 4 in the middle of deformation as viewed from above.

FIG. 7 is a schematic plan view of the cylindrical filter according to one embodiment of the present invention as viewed from above.

FIG. 8 is a schematic plan view of a cylindrical filter according to another embodiment of the present invention as viewed from above.

FIG. 9 is a perspective view of a conventionally known filter as viewed from above.

[Explanation of symbols]

1 ··· Cylindrical filter member; 2 · · · Filtration section; 3 · · · Central through hole; 4 · · · Micro cylindrical cell; 4 '· · · Deformable micro cylindrical cell; 5 · · · Cell space; Filter medium wall; 8. sheet filter medium; 9; deformable microtubular cell aggregate;
・ Cylindrical filter; 11 ・ ・ Top ・ 12 ・ ・ Bottom ・ 21 ・
・ Outer side surface; 22 ・ ・ Inner side surface; 61 ・ ・ Bent filter medium plate; 62 ・ ・ Contact surface; 63 ・ ・ Planar filter medium plate; 64,6
5, contact surface; 66, end area; 67, surrounding space exposed cell filter medium wall; 91, upper surface; 92, lower surface;
Side surface for connection; 94 Side surface for forming the inner side surface of the filtration section; 95
..Side for forming outer side surface of filtration unit;
400 tubular cell; 600 filter media wall.

Claims (4)

[Claims] (A) A plurality of micro-tubular cells each of which is covered with a cylindrical filter medium wall on all sides and each of which has an open upper surface and a lower surface. A filtration unit assembled in a parallel state; and (B) provided at the center of the filtration unit, the length direction of which is substantially parallel to the length direction of the micro-cylindrical cell; A cylindrical filter member comprising a cylindrical vertical hole having both sides open and all side surfaces surrounded by the filtering portion and having an inner diameter larger than the inner diameter of the micro-cylindrical cell; ,
(1) A plurality of deformable micro-cylindrical cells whose cross-sectional shape in the width direction is deformable are assembled, and are deformable in the filtration unit, and are opposite to the side surface for forming the filtration unit outer side surface and the filtration unit. One or more deformable micro-cylindrical cell aggregates having an inner side surface forming side surface and two opposing coupling side surfaces are prepared, and (2) in a direction along the filtration unit outer side surface forming side surface. In a direction substantially perpendicular to the length direction of the deformable micro-cylindrical cell, by deforming the filtering portion outer side surface forming side surface, by changing the curvature of the filtering portion outer side surface forming side surface. The filtering portion outer side surface forming side surface forms the filtering portion outer side surface, and at the same time, substantially in the direction along the filtering portion inner side surface forming side surface and in the longitudinal direction of the deformable micro cylindrical cell. In a direction perpendicular to the By deforming the side surface forming side surface and changing the curvature of the filtering unit inner side surface forming side surface, the deformable micro cylinder so that the filtering unit inner side surface forming side surface forms the inner side surface of the filtering unit. And (3A) when the number of deformable micro-tubular cell aggregates to be used is one, one connecting side surface of the deformable micro-cylindrical cell aggregate and the other. Or (3)
B) When the number of deformable micro cylindrical cell aggregates to be used is two or more, the connecting side surfaces of adjacent deformable micro cylindrical cell aggregates are mutually connected to form the deformable micro cylindrical cell aggregate. A tubular filter member formed by integrally forming a body. 2. A tubular filter comprising the tubular filter member according to claim 1. 3. The cylindrical filter according to claim 2, wherein the filter space is filled in one or more cell spaces of the micro cylindrical cells, and both the upper surface and the lower surface thereof are closed. . 4. The method for manufacturing a cylindrical filter member according to claim 1, wherein (1) a plurality of deformable micro cylindrical cells whose cross-sectional shape in the width direction is deformable are assembled, and One or more deformable micro-cylindrical cell aggregates that can be transformed into a filtration part and have opposing side faces for forming the outer side face of the filtration part and opposing side faces for forming the inner side face of the filtration part, and two opposing side faces for connection. And (2) the filtration unit outer side surface in a direction along the filtration unit outer side surface forming side surface and in a direction substantially perpendicular to the length direction of the deformable microtubular cell. By deforming the forming side surface and changing the curvature of the filtering unit outer side surface forming side surface, the filtering unit outer side surface forming side surface forms the outer side surface of the filtering unit, and at the same time, the filtering unit inner side surface forming Deformable in the direction along the side In a direction substantially perpendicular to the length direction of the microcapsule cell, the filtering portion inner side surface forming side is deformed, and by changing the curvature of the filtering portion inner side surface forming side surface, the filtering portion is formed. The deformable micro cylindrical cell aggregate is deformed so that the inner side surface forming side surface forms the inner side surface of the filtration unit, and (3A) the number of deformable micro cylindrical cell aggregates used is one In the case of, one of the connecting side of the deformable micro cylindrical cell aggregate and the other connecting side is connected, or,
(3B) When the number of the deformable micro cylindrical cell aggregates to be used is two or more, the connecting side surfaces of the adjacent deformable micro cylindrical cell aggregates are mutually connected to form the deformable micro cylindrical cell. The method according to claim 1, wherein the assembly is integrated.