JP2008119579A5 - - Google Patents

Claims (13)

A filter device in which a filter part for filtering fluid is attached to the inside of the casing;
The filter unit is
A filtration plate material in which a plurality of convex portions are arranged while forming a laminated structure by overlapping a plurality of sheets having the same or different shapes and facing in a direction orthogonal to the axial direction,
Overlapping the plurality of filtration sheet material by pressing from both directions of the axial direction, and a pressing means for integrating the entire plurality of filtration sheet material degradable in,
The filtration plate members are pressed against each other by the pressing means to form columnar portions at the positions of the convex portions, and a plurality of fine openings are dispersed and formed between the adjacent columnar portions,
The fluid passes through the openings to remove particles in the fluid ,
The one filter plate material is an inner ring material in which a plurality of outward projecting pieces project outward from the outer peripheral edge thereof,
The other filter plate material is an outer ring material in which a plurality of inwardly projecting pieces project from the inner periphery toward the center,
By alternately superimposing the inner ring material and the outer ring material having different shapes, one or both of the outer projecting piece and the inner projecting piece exhibits the function of the convex portion, and the columnar portion is formed. The filtration apparatus characterized by forming and opening the said opening . The filtration device according to claim 1,
The filtration device, wherein the convex portions of one of the filtration plate materials abut against the back surface of the other filtration plate material, so that the filtration plate materials are overlapped to form the columnar portion .   The filtration device according to claim 2,
  The cross-sectional shape of the filter part when viewed from the axial direction is annular,
  The plurality of convex portions are arranged radially with respect to the center of the filter plate and uniformly with respect to the circumferential direction,
  By the height dimension of the convex part in the filtration plate material, the gap dimension of the opening is determined,
  The filtration apparatus according to claim 1, wherein a width dimension of the opening is determined by a pitch between adjacent convex parts and a width dimension of the convex part.   The filtration device according to claim 1,
  The inner ring material has an annular shape in which a plurality of the outward projecting pieces project radially outward from the outer peripheral edge,
  The outer ring member has a circular shape in which a plurality of the inwardly projecting pieces project toward the center from the inner peripheral edge thereof.   The filtration device according to claim 1,
  Of the inner ring material and the outer ring material, the thickness of one member that exhibits the function of the convex portion is made thinner than the thickness of the other member,
  Forming the opening with the one member sandwiched between the other member above and below,
  The gap dimension of the opening formed by the convex part is smaller than the gap dimension of the space in the filter part,
  The filtration device, wherein the fluid flows so that the small opening is upstream of the fluid and the large space is downstream.   The filtration device according to claim 1, 2, 4 or 5,
  The filter device, wherein the cross-sectional shape of the filter portion when viewed from the axial direction is a polygonal annular shape, a straight belt shape, or a curved belt shape.   The filtration device according to any one of claims 1 to 5,
  The pressing means is fixed to the bottom plate portion disposed at the bottom of the filter portion, the pressing plate disposed at the top of the filter portion, and attached to the bottom plate portion so as to extend in the axial direction at the center position. A support bolt and a nut screwed into the support bolt,
  The plurality of filtration plate materials that overlap each other to form a laminated structure, one end surface is supported by the bottom plate portion, the other end surface is supported by the pressing plate,
  By screwing and tightening the nut onto the support bolt, the plurality of filter plate members are sandwiched from both directions in the axial direction and integrated as a whole.If the nut is loosened and the holding plate is removed, the plurality of filter plate materials are A filtration device characterized by being able to disassemble the filter plate into pieces.   The filtration device according to claim 7,
  The filter plate has a plurality of holes that are equidistant from the center position and are formed at equal positions in the circumferential direction. When the plurality of filter plates are stacked, It is a hole for positioning so as to overlap accurately in the circumferential direction,
  A plurality of positioning rods are attached to the bottom plate portion and face a direction parallel to the axis, and are equally spaced from the center position and evenly in the circumferential direction,
  The holding plate has a plurality of holes that are equidistant from the center position and evenly in the circumferential direction.
  By engaging the holes of the filter plate and the holes of the holding plate with the rod, the central positions of the plurality of filter plates are matched and the circumferential positions are also matched. As a result, the projections of the plurality of filtration plate members are linearly arranged, and the plurality of columnar portions are formed in parallel with the axis.   The filtration device according to any one of claims 1 to 5,
  When assembling the filter part, even if the filter plate material is slightly deformed, if the filter plate material is pressed from both directions in the axial direction by the pressing means in a state where the plurality of filter plate materials are overlapped, the filtration A filtration device characterized in that deformation of a plate material is automatically corrected to a preferable laminated state.   The filtration device according to any one of claims 1 to 5, wherein the filtration plate material has a laminated structure of 200 to 1,000 sheets that overlap each other.   The filtration device according to any one of claims 1 to 5,
  When the plurality of filter plate materials are stacked and pressed by the pressing means, the material of the filter plate material is made of a metal such as stainless steel or titanium, or has a hardness of a predetermined level or more so as to hardly cause elastic deformation or plastic deformation. A filtration device characterized by being a synthetic resin or ceramic.   The filtration device according to any one of claims 1 to 5,
  The filtration device, wherein the fluid filtered by the filtration device is a liquid selected from the group consisting of foods, paints, chemicals and oils, or air supplied to a clean room.   The filtration device according to claim 1, 2 or 5,
  The filter unit includes a plurality of polygonal filtration plate members and the pressing means, and the cross-sectional shape when viewed from the axial direction is a polygonal ring,
  The filter plate is oriented in a direction orthogonal to the axial direction, and a plurality of sheets are stacked to form a laminated structure,
  The pressing means presses the plurality of overlapping filter plates from both directions in the axial direction, and integrates the entire filter plates so that they can be disassembled,
  At the position of each convex portion, the filtration plate members are pressed against each other by the pressing means to form the columnar portion, and a plurality of fine openings are dispersed and formed between the adjacent columnar portions,
  The filtration device, wherein the fluid passes through the openings to remove the particles in the fluid.