JP6155800B2 - Filter device, filter material and filter material sheet - Google Patents

Description

  The present invention relates to a filter device, a filter material, and a filter material sheet for removing foreign matters mixed in a fluid.

  Conventionally, a filter device has been used to remove foreign matters mixed in a fluid such as a beverage.

  As such a filter device, one having a laminated filter material has been developed (see Patent Document 1).

  In addition, a filter device that changes fluid resistance between the opening side and the sealing side has been developed in order to allow fluid to flow smoothly in the filter device (see Patent Document 2).

  Generally, the filter device removes foreign matters mixed in the fluid. In this case, there is a case where foreign matters having a size larger than a certain shape are removed and foreign matters having a size smaller than a certain shape are desired to pass through.

  There is also a need to allow fluid to flow smoothly in the filter device.

JP 2011-147872 A JP 200319410 A

  The present invention has been made in consideration of such points, and can remove foreign matters larger than a certain shape, allow foreign matters smaller than this shape to pass, and further smooth the fluid. It aims at providing the filter apparatus which can be flowed, the filter material, and the sheet | seat for filter materials.

  According to the present invention, in a filter device including a filter material having an opening on one side and closed on the other side, the filter material has a large number of through portions having the same shape, and the number of the through portions per unit area is one. The filter device is characterized in that the number increases from the side toward the other side.

The present invention is the filter device, wherein the filter material includes a laminate having at least one filter function layer.

  The present invention is a filter device in which a laminate of filter materials has a plurality of filter function layers.

  The present invention is the filter device according to claim 2, wherein the laminate of filter materials includes a filter functional layer and a pair of metal meshes sandwiching the filter functional layer.

  The present invention is a filter device in which a laminate of filter materials includes a filter function layer, a filtration layer, and a pair of metal meshes that sandwich the filter function layer and the filtration layer.

  The present invention is the filter device, wherein the filter function layer is made of a metal filter function layer in which a through hole is formed by etching.

  The present invention is a filter device characterized in that the filter device includes a tubular filter material and a fixture provided on one side of the filter material.

  In the filter material, the filter material has an opening on one side, the other side is closed, and has a number of through holes having the same shape, and the number of through holes per unit area is reduced on one side, It is a filter material characterized in that the number increases toward the other side.

  In the sheet for filter material, the present invention has a large number of through-holes having the same shape, and the number of through-holes per unit area is reduced on one side and the number increases toward the other side. It is a sheet | seat for filter materials characterized by having.

  As described above, according to the present invention, foreign matters having a size larger than a certain shape can be reliably removed, and the flow of fluid flowing inside can be made uniform.

FIG. 1 is a perspective view showing an embodiment of a filter device according to the present invention. FIG. 2 is an overall schematic view showing a filter system in which a filter device according to the present invention is incorporated. FIG. 3 is a sectional view showing an example of a filter material of the filter device according to the present invention. FIG. 4 is a sectional view showing a modification of the filter material of the filter device according to the present invention. FIG. 5 is a sectional view showing a modification of the filter material of the filter device according to the present invention. FIG. 6 is a perspective view showing a filter device as a comparative example. FIG. 7 is a view showing a filter material sheet according to the present invention. FIG. 8 is a view showing a modification of the filter material according to the present invention. FIG. 9 is a sectional view showing a modification of the filter material of the filter device according to the present invention. FIG. 10 is a sectional view showing a modification of the filter material of the filter device according to the present invention.

DETAILED DESCRIPTION OF THE INVENTION

  Embodiments of the present invention will be described below with reference to the drawings.

  1 to 5 are diagrams showing an embodiment of a filter device according to the present invention.

  As shown in FIGS. 1 and 2, the filter device 10 removes foreign matter from a fluid mixed with foreign matter. The filter device 10 according to the embodiment includes a cylindrical side wall 11A having a large number of circular through holes 11a, an opening 13 formed on one side of the cylindrical side wall 11A, and a closure formed on the other side of the cylindrical side wall 11A. The filter member 11 having the closed bottom portion 14 and a flange (attachment) 15 provided on the periphery of the opening 13 of the filter member 11 are provided.

  Among these, the filter material 11 has many circular through-holes 11a formed in the cylindrical side wall 11A, and each through-hole 11a has the same shape. For this reason, the filter material 11 can remove foreign matters larger than the size of the through-hole 11a, and allows foreign matters smaller than the size of the through-hole 11a to pass through.

  Here, “substantially the same shape” includes not only the case where the through holes 11a have the completely same shape, but also the shape in which the through holes 11a have an error of about ± 5% with respect to a desired shape due to etching or the like.

  Further, the number of through holes 11a per unit area is smaller on the opening 13 side (one side), and the number of through holes 11a per unit area gradually increases toward the closed bottom portion 14 (the other side). .

  The filter device 10 having such a configuration is incorporated in the casing 2 having the inlet 3 and the outlet 4, and thus includes the casing 2 and the filter device 10 incorporated in the casing 2. 1 is constructed (FIG. 2).

  In this case, the filter device 10 is fixed in the casing 2 by directing the flange 15 of the filter device 10 toward the inlet 3 of the casing 2 and fixing the flange 15 to a fixture (not shown) in the casing 2. The

  Next, the structure of the cylindrical filter material 11 having a large number of circular through holes 11a will be further described.

  As shown in FIG. 3, the cylindrical filter material 11 includes a laminate 20 having a plurality of, for example, four filter function layers 21, 22, 23, and 24.

  Each of the filter functional layers 21, 22, 23, and 24 of the laminate 20 is obtained by etching a metal base material made of stainless steel. Each of the filter function layers 21, 22, 23, and 24 has through holes 21a, 22a, 23a, and 24a formed by etching, and the size of the through holes 21a, 22a, 23a, and 24a is a diameter. 50 μm.

  In FIG. 3, each filter functional layer 21, 22, 23, 24 positions each through-hole 21a, 22a, 23a, 24a, and is bonded together. Thereby, the laminated body 20 can be obtained. In this case, by aligning the through holes 21a, 22a, 23a, 24a of the filter function layers 21, 22, 23, 24 positioned relative to each other, a through hole 11a of the filter material 11 having a diameter of 50 μm is formed. Is done.

  In FIG. 3, each of the filter functional layers 21, 22, 23, 24 is made of a metal base material having a thickness of 30 μm. For this reason, the filter material 11 can be firmly formed by collecting and laminating four filter function layers.

  Furthermore, when the through holes 21a, 22a, 23a, 24a of the filter function layers 21, 22, 23, 24 are formed by etching, the cross-sectional shape of each of the through holes 21a, 22a, 23a, 24a generally has a curved surface shape. Each of the through holes 21a, 22a, 23a, 24a has a divergent shape from the inside 21A, 23A, 24A toward the surface 21B, 22B, 23B, 24B. In this case, the filter functional layers 21, 22, 23, and 24 are stacked, and the through holes 11a of the filter material 11 can be formed by aligning the through holes 21a, 22a, 23a, and 24a. The cross-sectional shape of the hole 11a can be made substantially rectangular as a whole.

  Next, a modified example of the cylindrical filter material 11 having a large number of circular through holes 11a will be described with reference to FIG.

  As shown in FIG. 4, the cylindrical filter material 11 includes a laminated body 20 having a filter function layer 21 and a pair of metal meshes 25 and 26 that sandwich the filter function layer 21 from both sides.

  The filter function layer 21 of the laminate 20 is obtained by etching a metal base material made of stainless steel. And the filter function layer 21 has the through-hole 21a formed by the etching, and the magnitude | size of the through-hole 21a is 50 micrometers in diameter.

  In FIG. 4, the through hole 21 a of the filter functional layer 21 has a diameter of 50 μm, and the pair of metal meshes 25 and 26 that sandwich the filter functional layer 21 from both sides has a considerably larger opening than the through hole 21 a.

  For this reason, the through hole 11 a of the filter material 11 coincides with the through hole 21 a of the filter functional layer 21.

  The filter function layer 21 is made of a metal substrate having a thickness of 30 μm, and the filter material 11 can be firmly formed by sandwiching the filter function layer 21 with a pair of metal meshes 25 and 26 from both sides.

  In this modification, the cylindrical filter material 11 includes a plurality of filter function layers 21, 22, 23, and 24 and a pair of wire meshes 25 that sandwich the plurality of filter function layers 21, 22, 23, and 24 from both sides. , 26 (see FIG. 9).

  In FIG. 4, instead of the pair of metal meshes 25 and 26, a pair of punching metals having an opening larger than the through hole 11a may be used.

  Next, a further modification of the cylindrical filter material 11 having a large number of circular through holes 11a will be described with reference to FIG.

  As shown in FIG. 5, the cylindrical filter material 11 includes a filter functional layer 21, a filtration layer 28, and a laminate having a pair of metal meshes 25 and 26 that sandwich the filter functional layer 21 and the filtration layer 28 from both sides. It consists of twenty.

  The filter function layer 21 of the laminate 20 is obtained by etching a metal base material made of stainless steel. And the filter function layer 21 has the through-hole 21a formed by the etching, and the magnitude | size of the through-hole 21a is 50 micrometers in diameter.

    Moreover, in this modification, the cylindrical filter material 11 includes a plurality of filter function layers 21, 22, 23, 24, a filtration layer 28, a plurality of filter function layers 21, 22, 23, 24, and a filtration layer 28. It may consist of the laminated body 20 which has a pair of metal-mesh 25,26 which clamps from both surfaces (refer FIG. 10).

  In FIG. 5, the through hole 21a of the filter functional layer 21 has a diameter of 50 μm, and the pair of metal meshes 25 and 26 that sandwich the filter functional layer 21 and the filtration layer 28 from both sides are considerably larger than the through hole 21a. Have

  For this reason, the through hole 11 a of the filter material 11 coincides with the through hole 21 a of the filter functional layer 21.

The filter function layer 21 is made of metal base material stainless and filtration layer 28 are nonwoven, diatomaceous earth, it consists filtration media, such as carbon fiber. And the filter material 11 can be comprised firmly by pinching this filter function layer 21 and the filtration layer 28 by a pair of metal-mesh 25,26 from both surfaces.

  By the way, in FIG. 5, in addition to the filter functional layer 21 and the filtration layer 28 disposed in the pair of metal meshes 25 and 26, other functional layers may be provided, and each layer is provided in the pair of metal meshes 25 and 26. There is no restriction | limiting in particular in the order to arrange | position, Each layer can be arrange | positioned in arbitrary orders. Further, instead of the pair of wire meshes 25 and 26, a pair of punching metals having an opening larger than the through hole 11a may be used.

  Next, the operation of the present embodiment having such a configuration will be described.

  First, the filter material sheet 20A is prepared (see FIG. 7).

  In this case, by first etching the metal substrate, filter function layers 21, 22, 23, and 24 having through-holes 21a, 22a, 23a, and 24a are produced, and the respective through-holes 21a, 22a, 23a, and 24a are produced. The filter functionalities 21, 22, 23 and 24 are laminated and bonded together. Thus, the filter material sheet 20A can be prepared.

  In this case, a large number of through holes 11a are formed in the filter material sheet 20A in advance, and the number of through holes 11a gradually increases from the opening 13 side (left side in FIG. 7) toward the closed bottom portion 14 side (right side in FIG. 7). Has increased.

  Next, the filter material sheet 20A is formed into a cylindrical shape to form a cylindrical side wall 11A. One side of the cylindrical side wall 11A is used as an opening 13, and the other side of the cylindrical side wall 11A is closed to form a closed bottom portion 14. Form. In this way, the cylindrical filter material 11 is produced. Next, a flange 15 is attached to the opening 13 of the filter material 11 to produce the filter device 10.

  Next, as shown in FIGS. 1 and 2, the filter device 10 is assembled in the casing 2. In this case, the filter device 10 can be fixed in the casing 2 by fixing the flange 15 of the filter device 10 to the fixture in the casing 2, and thus the filter system 1 is obtained.

  Next, a fluid such as a beverage mixed with foreign matter flows into the casing 2 of the casing 2 from the inlet 3. The fluid then flows into the filter device 10 and foreign matter is removed by the filter device 10. Next, the fluid from which foreign matter has been removed by the filter device 10 is then discharged from the outlet 4 of the casing 2 to the outside of the casing 2.

  Next, the effect | action which removes a foreign material from the fluid in the filter apparatus 10 is further described.

First fluid including foreign matter flows from the opening 13 which serves as an input mouth flow in the filter material 11 of the filter apparatus 10. And the fluid which flows in into the filter material 11 passes the through-hole 11a formed in 11 A of cylindrical side walls among the filter materials 11, and the foreign material in a fluid is removed by the through-hole 11a in the meantime.

  Since each opening 11a of the filter material 11 has the same shape as described above, a foreign substance having a shape larger than the diameter of the through hole 11a can be removed by the opening 11a, and is smaller than the size of the through hole 11a. A foreign substance having a shape passes through the opening 11a. For this reason, only the foreign material which has a magnitude | size beyond a desired shape can be removed with the filter material 11 by the through-hole 11a of the filter material 11. FIG.

  Further, the number of through holes 11a per unit area of the filter material 11 is reduced on the opening 13 side (one side), and the number gradually increases toward the closed bottom portion 14 side (the other side). .

  For this reason, in the filter material 11, the flow of the fluid from the opening 13 side toward the closed bottom portion 14 side can be made uniform.

  That is, the number of through holes 11a formed in the cylindrical side wall 11A gradually increases from the opening 13 side toward the closed bottom portion 14 side. For this reason, the fluid resistance in the cylindrical side wall 11A of the filter material 11 can be gradually lowered from the opening 13 side toward the closed bottom portion 14 side. Therefore, the fluid flowing into the filter material 11 from the opening 13 does not immediately flow outward from the through-hole 11a in the vicinity of the opening 13, but smoothly flows the fluid in the filter material 11 toward the closed bottom portion 14 side. Thus, in the filter material 11, the flow of fluid from the opening 13 side toward the closed bottom portion 14 side can be made uniform.

  FIG. 6 shows a filter material 11 as a comparative example. In the filter material 11 shown in FIG. 6, a large number of through holes 11a having the same diameter are formed in the cylindrical side wall 11A. Since the through holes 11a are uniformly arranged at a predetermined pitch, the number of the through holes 11a per unit area is constant.

  In FIG. 6, the fluid resistance in the cylindrical side wall 11 </ b> A of the filter material 11 is constant from the opening 13 side toward the closed bottom portion 14 side. For this reason, in FIG. 6, it is conceivable that the fluid flowing into the filter material 11 from the opening 13 immediately flows out from the through hole 11 a near the inlet 13.

  On the other hand, according to the present embodiment, the fluid resistance in the cylindrical side wall 11A of the filter material 11 can be gradually reduced from the opening 13 side toward the closed bottom portion 14 side. For this reason, the fluid flowing into the filter material 11 from the opening 13 can be made to flow smoothly and uniformly from the opening 13 side toward the closed bottom portion 14 side. Furthermore, since the fluid can be made to flow uniformly in the filter material 11, the retention and contamination of the fluid in the filter material 11 can be prevented, and the filter material 11 is not locally damaged. In addition, since the fluid can be flowed using the entire area of the filter material 11, it is possible to improve the efficiency of removing foreign matters using the filter material 11.

  In the above-described embodiment, an example has been shown in which a fluid flows into the filter material 11 from the opening 13 and is discharged to the outside through the through hole 11a of the cylindrical side wall 11A. The fluid may be allowed to flow into the filter material 11 from the through hole 11a of 11A, and the fluid may be discharged from the opening 13 of the filter material 11. In this case, the opening 13 of the filter material 11 serves as an outlet provided on one side of the filter material 11.

  Moreover, although the example in which the fill plate material 11 has the cylindrical side wall 11A and the closed bottom portion 14 has been shown, the present invention is not limited thereto, and the filter material 11 may be formed in a bag shape as a whole as shown in FIG.

  As shown in FIG. 8, the filter device 10 includes a filter material 11 having an opening 13 and a flange 15 provided in the opening 13 of the filter material 11, and the filter material 11 is formed in a bag shape. The filter material 11 has a large number of through holes 11 a having the same shape, and the number of the through holes 11 a increases from the opening 13 side toward the closed bottom portion 14.

  Furthermore, in the said embodiment, although the example which comprises the filter material 11 from the laminated body 20 was shown, you may comprise the filter material 11 from a single-layer filter functional layer.

  Although the through hole 11a has been shown to be circular, the shape of the through portion is not limited to a circle as long as it has the same shape, and may be various forms such as an ellipse and a rectangle according to the purpose of use.

  Furthermore, although the embodiment of the filter material 11 is made of stainless steel, the same effect can be obtained with an alloy such as Inconel or Hastelloy for applications where corrosion resistance is required, such as nylon and PTEF. A similar effect can be obtained with a simple resin.

DESCRIPTION OF SYMBOLS 1 Filter system 2 Casing 3 Inlet 4 Outlet 10 Filter apparatus 11 Filter material 13 Opening 14 Closed bottom part 15 Flange 20 Laminated body 20A Filter material sheet 21, 22, 23, 24 Filter function layer 25, 26 Wire mesh 28 Filtration layer

Claims (7)

In the filter device including a filter material having an opening on the inflow side and closed on the outflow side ,
Filter material has a filtering function layer at least one layer of filtering layer is made of a metal substrate having a large number of through holes having the same shape, the number of through holes per unit area from the inlet side A filter device characterized in that the number thereof increases toward the outflow side . The filter device according to claim 1, wherein the filter material has a plurality of filter function layers. The filter device according to claim 1, wherein the filter material has a pair of metal meshes that sandwich the filter functional layer. The filter device according to claim 3, wherein the filter material further includes a filtration layer made of a filter material other than metal, and the filter functional layer and the filtration layer are sandwiched between a pair of metal meshes. The filter device according to claim 4, wherein the filtration layer is made of any one of a nonwoven fabric, diatomaceous earth, and carbon fiber. The filter device according to any one of claims 1 to 5, wherein the filter device includes a tubular filter material and a fitting provided on the inlet side of the filter material. In filter materials,
Has an opening on the inlet side, the outlet side is closed,
The filter material has at least one filter functional layer, the filter functional layer is made of a metal substrate, has a plurality of through holes having the same shape, and the number of through holes per unit area is from the inlet side The filter material characterized by the number increasing toward the outflow side.

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