JP2005161210A - Filter device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a filter device which can be applied to sizes small to large, facilitates the exchange of filter elements, and keeps running cost lowered. <P>SOLUTION: An axial core 34 and a filter element 35 winding over and over to form many layers around the axial core 34 as the center form a filter member 21. Within a nearly cylindrical filter case 20 having open upper and bottom faces, one or a plurality of the filter member 21 are housed or stacked. The filter case 20 is composed of both split bodies 20a and 20b that freely open and close right and left. Both split bodies 20a and 20b are fastened with a fastener 23. A liquid is filtered through the filter members 21 in the axial direction thereof, so as to capture impurities using the filter members 21. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a filter device for filtering a liquid such as a factory waste liquid.

  Various filters or filter devices for filtering liquid have been provided. For example, a filter element bent in a pleat shape is attached to the outer peripheral surface of a substantially cylindrical support, or a sheet-like filter element as shown in Patent Document 1 below is wound in several layers to form a substantially circular shape. Column-type or roll-type filters are provided.

JP 2001-186822 A

The water purifier for watering described in Patent Document 1 is a mixture of activated carbon fibers (about 60% to 80%) and polyester fibers (about 40% to 20%) at a density of about 0.135 g / cm ³ . The water purification filter is formed by winding a filter sheet into a columnar shape, and a casing made of a pair of cylindrical members on which the water purification filter is detachably mounted.
And the opening part connected with a hose is provided in the both ends of the casing, and tap water is passed along the axial direction of a water purification filter, and it is made to clean.

  In this patent document 1, a pair of cylindrical members are rotationally engaged from both sides in the axial direction of the water purification filter, and the water purification filter is placed in a cylindrical casing. And when replacing | exchanging the water purification filter in a casing, a pair of cylindrical member is rotated, engagement is cancelled | released and an internal water purification filter is taken out along the axial direction of a cylindrical member.

In such a conventional example, since the water purifier is small for watering, it is easy to replace the water purifying filter by holding the casing by hand and turning the cylindrical member. The water purification filter cannot be replaced by rotating the cylindrical member.
In addition, since most foreign substances are trapped on the input side of the filtrate such as tap water, this type of filter that allows the filtrate to flow in the axial direction of the filter does not have much water on the downstream side of the filter. Even when foreign matter is not trapped, the pressure loss increases and it must be replaced with a new water purification filter. Therefore, there is a problem that the running cost becomes very high.

  The present invention has been provided in view of the above-described problems, and an object of the present invention is to provide a filter device that can be applied from a small size to a large size, can easily replace a filter element, and has a low running cost. Is.

  Therefore, in the filter device according to the first aspect of the present invention, the filter member 21 including the shaft core 34 and the filter element 35 wound around the shaft core 34 in several layers, and the filter member 21. And a substantially cylindrical filter case 20 having an open top and bottom surface, the filter case 20 can be opened and closed left and right, and liquid can be passed through the filter member 21 in order to filter it in the axial direction. It is characterized by having.

  The filter device according to claim 2 is characterized in that a plurality of filter members 21 are stacked in the filter case 20.

  In the filter device according to claim 3, an elastic ring-shaped packing 39 is attached to the outer peripheral surface of the filter member 21, and the outer peripheral surface of the packing 39 is elastically contacted with the inner peripheral surface of the filter case 20. It is characterized by that.

  Further, in the filter device according to claim 4, the filter member 21 composed of the shaft core 34 and the filter element 35 wound in several layers around the shaft core 34, and the filter member 21 inside. And a filter case 20 having one or a plurality of stacked layers, each having an open top and bottom surface. The filter case 20 can be opened and closed to the left and right, and an inlet 11 for introducing a liquid is provided above the filter case 20. In the lower part of the filter case 20, a discharge port 12 for discharging the liquid filtered in the axial direction of the filter member 21 is provided.

  In the filter device according to claim 5, an elastic ring-shaped packing 39 is mounted on the outer peripheral surface of the filter member 21, and the outer peripheral surface of the packing 39 is elastically contacted with the inner peripheral surface of the filter case 20. It is characterized by that.

  In the filter device according to claim 6, the filter member 21 in which the filter element 35 is wound in several layers around the shaft core 34, and the upper and lower surfaces on which one or a plurality of the filter members 21 are stacked are arranged. A filter body 2 is formed by a filter case 20 that is open and can be opened and closed to the left and right by half-divided bodies 20a and 20b that are substantially divided in half, and a housing 3 in which the filter body 2 is sealed and arranged. An inlet 11 for introducing liquid is provided at the top of the housing 3, and a discharge port 12 for discharging the liquid filtered in the axial direction of the filter member 21 of the filter body 2 at the bottom of the housing 3. It is characterized by providing.

  In the filter device according to claim 7, an elastic ring-shaped packing 39 is mounted on the outer peripheral surface of the filter member 21, and the outer peripheral surface of the packing 39 is elastically contacted with the inner peripheral surface of the filter case 20. It is characterized by that.

  The filter device according to claim 8, wherein the filter element 35 includes a functional activated carbon layer 36 composed of countless activated carbon particles, and a nonwoven fabric upper layer 37 and a nonwoven fabric respectively bonded to upper and lower surfaces of the functional activated carbon layer 36. It is characterized by comprising the lower layer 38.

The filter device according to claim 9, wherein the weight of the filter element 35 is 380 ± 38 g / m ² , the thickness of the filter element 35 is 1.1 ± 0.2 mm (peacock thickness meter), and the pressure loss of the filter element 35 6 to 14 Pascals (wind speed 10 cm / sec), and air permeability is 80 cc / square cm / second to 130 cc / square cm / second.

In the filter device according to claim 10, in the filter element 35, the basis weight of the functional activated carbon layer 36 is 280 ± 28 g / m ^2, and the basis weights of the nonwoven fabric upper layer 37 and the nonwoven fabric lower layer 38 are 50 ± 5 g / m ^2, and the adhesive layer total of the adhesive for adhering the nonwoven fabric upper layer 37 and the nonwoven fabric lower layer 38 to the upper and lower surfaces of the functional activated carbon layer 36 is 50 ± 5 g / m ² . The particle diameter of the activated carbon is 25 to 70 mesh, and each particle of the activated carbon is arranged in the nonwoven fabric upper layer 37 and the nonwoven fabric lower layer 38.

According to the filter device of the present invention, by opening one half of the filter case 20 of the filter body 2 by 90 degrees or more, the internal filter member 21 can be easily taken out. Only the uppermost filter member 21 is taken out and replaced with a new filter member 21. Even when a new filter member 21 is placed in the filter case 20, half of the filter case 20 is open, so that the filter member 21 can be easily placed and placed in the filter case 20.
In addition, after removing the uppermost filter member 21, it is not necessary to replace the filter member 21 with a new filter member 21, so that foreign matters are captured by the second-stage filter member 21, and all the filter members 21 are used. Thereafter, a plurality of new filter members 21 may be inserted. Accordingly, it is only necessary to take out the uppermost filter member 21 that captures the most impurities, and it is not necessary to insert a new filter member 21 each time. Therefore, the stop time during the filtration operation can be reduced, and the efficiency of the filtration operation can be reduced. Can be improved.

The size of the filter device A including the filter member 21 and the like is not particularly limited, and can be applied to a device that filters thousands of liters of liquid per minute by the capacity of the discharge pump 14 or the like. In particular, as the size of the apparatus increases, the use of a plurality of filter members 21 makes it easier to replace the filter member 21 because the size of one filter member 21 is small.
Further, the replacement of the filter member 21 that has captured the foreign matter can be replaced with one of the plurality of filter members 21, and the running cost can be kept very low.

  Further, since the packing 39 is mounted on the outer peripheral surface of the filter member 21 and the outer peripheral surface of the packing 39 is elastically contacted with the inner peripheral surface of the filter case 20, the outer peripheral surface of the filter member 21 and the inner peripheral surface of the filter case 20 are provided. The liquid can be prevented from leaking through between the two, and the entire amount of the liquid can be reliably filtered.

In the filter element 35, the basis weight of the functional activated carbon layer 36 is 280 ± 28 g / m ^2, and the basis weights of the nonwoven fabric upper layer 37 and the nonwoven fabric lower layer 38 are 50 ± 5 g / m ^{2 in} total. The total adhesive layer of the adhesive for adhering the nonwoven fabric upper layer 37 and the nonwoven fabric lower layer 38 to the upper and lower surfaces of the activated carbon layer 36 is 50 ± 5 g / m ^2, and the activated carbon particle size of the functional activated carbon layer 36 is 25-70. The activated carbon particles are arranged so that the particles of the activated carbon are as uniform as possible in the nonwoven fabric upper layer 37 and the nonwoven fabric lower layer 38, so that the liquid such as factory waste liquid is a filter element made of a functional composite nonwoven fabric containing activated carbon. Instead of passing through the thickness direction of 35, it passes through the inside of the filter element 35 along the axial direction around which the filter element 35 is wound. Passing through countless countless activated carbons 40 in the carbonaceous charcoal layer 36, fiber yarns extending in multiple directions of the nonwoven fabric upper layer 37 and the nonwoven fabric lower layer 38, the yarn and the functional activated carbon layer 36 As the activated carbon 40 passes through the slightly entangled portion, many impurities contained in the liquid such as the factory waste liquid extend in many directions of the activated carbon 40, the nonwoven fabric upper layer 37, and the nonwoven fabric lower layer 38. By adsorbing to the yarn, a large amount of impurities could be captured, and the filtration efficiency could be greatly increased by a single filtration action.

  And in the filter apparatus A of this invention, since the transparency of liquids, such as factory waste liquid after filtration, became very high, it was able to capture | acquire very much impurities contained in liquids, such as factory waste liquid. Is. Thereby, it is compatible with BOD (biochemical oxygen demand) and COD (chemical oxygen demand).

  Further, in the filter device A, good results were also obtained when A heavy oil was filtered as a liquid to be filtered. The A heavy oil before filtration is black as is well known, but when it is filtered with the filter device A, it becomes a light brown with only one filtration action, the transparency becomes very high, and the oil after filtration becomes transparent. When placed in the bottle, the oil was transparent and the characters could be clearly read through the oil.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 shows a sectional view of a filter device A according to the present invention, and FIG. 2 shows an exploded sectional view of the filter device A. The filter device A is composed of a substantially cylindrical metal casing 1 and a filter body 2 that is detachably mounted in the casing 1.

  The casing 1 has a substantially cylindrical housing 3 whose upper surface is open and whose lower surface is closed, and a lid body that is detachably attached to the opening surface of the housing 3 and seals the opening surface of the housing 3. 4. An inflow port 11 for allowing liquid to flow in is provided at the upper part of the housing 3, and an outlet 12 for discharging the liquid filtered by the filter body 2 is provided on the lower surface side of the housing 3. It has been. The discharge port 12 may be provided not on the lower surface of the housing 3 but on the lower side surface of the housing 3 as shown. In addition, a suction pipe 14 is provided in the discharge pipe 13 connected to the discharge port 12.

  As shown in FIGS. 1 and 2, a substantially ring disk-shaped flange 15 is integrally fixed to the upper inner peripheral surface of the housing 3, and a substantially ring for sealing is attached to the upper surface of the flange 15. A rubber packing 16 having a disk shape and elasticity is detachably mounted.

Next, the configuration of the filter body 2 that is detachably disposed in the casing 1 will be described. As shown in FIGS. 3 to 5, the filter main body 2 includes a substantially cylindrical filter case 20 having upper and lower surfaces opened, and a plurality of filter members 21 that are detachably mounted in the filter case 20. Has been.
The metal filter case 20 includes a pair of left and right halves 20a and 20b, and one end of each of the halves 20a and 20b is connected by a hinge 22 provided in the vertical direction. The hinges 22 allow the halves 20a and 20b to be opened and closed left and right on the side of the filter case 20.

  Two fasteners 23 are provided in the vertical direction on the other end side of the halves 20a and 20b, and both halves are firmly secured by the fastener 23 when the halves 20a and 20b are closed. 20a and 20b are fastened and fixed. The fastener 23 includes a shaft portion 24 fixed to one of the halves 20a, an operation portion 25 that is rotatably provided on the shaft portion 24, and a base portion side of the operation portion 25. A substantially U-shaped engagement piece 26 and a substantially U-shaped hook portion 27 which is engaged with a tip end portion of the engagement piece 26 and fixed to the other half 20b. Has been. This fastener 23 is a so-called toggle-type fastener, and since it has a well-known structure, detailed description thereof is omitted.

As shown in FIG. 6, arcuate plate-like mounting pieces 30 are integrally fixed to the inner peripheral surfaces at the lower ends of the halves 20a and 20b, respectively. On the top, a plurality of filter members 21 are arranged so as to be detachable in the vertical direction.
Further, arc-shaped flanges 31 are integrally fixed to the outer peripheral surfaces at the upper ends of the halves 20a and 20b, respectively, facing outward. As shown in FIG. 1, the filter main body 2 is attached to and detached from the housing 3 by placing the placement piece 30 of the filter case 20 on the flange portion 15 of the housing 3 via the packing 16. It is arranged to be freely sealed.

Next, the configuration of the filter member 21 will be described. 7 shows a front view of the filter member 21, FIG. 8 shows a plan view of the filter member 21, and FIG. 9 shows a cross-sectional view of the filter member 21.
The filter member 21 includes a shaft core 34 and a filter element 35 wound in several layers around the shaft core 34. The filter element 35 is said to be a functional composite nonwoven fabric containing activated carbon, and FIG. 10 shows an enlarged cross-sectional view of the main part of the filter element 35. The weight of the filter element 35 is 380 ± 38 g / m ² , the thickness is 1.1 ± 0.2 mm (peacock thickness meter), and the pressure loss is 6 to 14 pascals (wind speed 10 cm / sec). It is. Further, the air permeability is 80 cc / square cm / second to 130 cc / square cm / second.

As shown in FIG. 10, the filter element 35 includes a functional activated carbon layer 36 composed of countless activated carbon particles, a nonwoven fabric upper layer 37 and a nonwoven fabric lower layer 38 bonded to the upper and lower surfaces of the functional activated carbon layer 36, respectively. It consists of The basis weight of the functional activated carbon layer 36 is 280 ± 28 g / m ² , and the nonwoven fabric upper layer 37 and the nonwoven fabric lower layer 38 are 50 ± 5 g / m ² in total. The total adhesive layer of the adhesive for bonding the upper layer 37 and the nonwoven fabric lower layer 38 is 50 ± 5 g / m ² .
Moreover, the particle diameter of the activated carbon of the functional activated carbon layer 36 is 25 to 70 mesh, and the particles of the activated carbon are arranged in the nonwoven fabric upper layer 37 and the nonwoven fabric lower layer 38 so as to be as uniform as possible. As the activated carbon, those having various functions can be used, and the functional activated carbon layer 36 having desired functions such as adsorptivity and deodorization can be formed by selecting according to the liquid to be treated and the substance to be removed.

Here, the filtration direction of the liquid in the filter member 21 is a direction from the upper surface to the lower surface of the filter member 21 as shown by an arrow in FIG. 9, that is, the axial direction of the filter member 21, and specifically, each filter element. The liquid enters from the end face of 35, passes through the inner nonwoven fabric upper layer 37, the functional activated carbon layer 36 and the nonwoven fabric lower layer 38, and the filtered liquid falls from the end faces of these layers 36 to 38. . In other words, the liquid is filtered through the liquid in the axial direction of the filter member 21 in which the filter element 35 is wound around the shaft core 34 several times.
The liquid is not allowed to pass between the wound filter elements 35, and all the liquid passes through the filter element 35 itself and is filtered.

  Therefore, when the filter element 35 is wound around the shaft core 34, the filter element 35 is not wound loosely, but is wound firmly so that the surfaces of the adjacent filter elements 35 are in close contact or in close contact with each other. The liquid is prevented from passing between the filter elements 35.

  Here, in the above description, the filter member 21 is configured by the shaft core 34 and the filter element 35 wound around the shaft core 34 in many layers, but the adhesion between the filter elements 35 is further improved. In order to secure the sealing property between the outer peripheral surface of the filter member 21 and the inner peripheral surface of the filter case 20 when the filter member 21 is mounted in the filter case 20, the outer filter An elastic packing 39 (see FIGS. 6 and 9) is attached to the outer peripheral surface of the element 35.

The packing 39 is made of rubber and has substantially the same width as the vertical dimension of the filter element 35 and is formed in a ring shape. The inner diameter of the packing 39 is the outer diameter of the outer filter element 35. It is set a little smaller. Furthermore, the outer diameter of the filter member 21 configured by mounting the packing 39 on the outer periphery of the filter element 35 is set to be slightly larger than the inner diameter of the filter case 20 in a state where both the halves 20a and 20b are closed.
Thus, when the filter member 21 is inserted into the filter case 20 and the halves 20a and 20b are fastened by the fasteners 23, the outer peripheral surface of the filter member 21 (the outer peripheral surface of the packing 39) and the filter case Twenty inner peripheral surfaces are in elastic contact with each other, and the sealing performance is maintained between them. Therefore, the liquid can be prevented from leaking between the outer peripheral surface of the filter member 21 and the inner peripheral surface of the filter case 20, and the entire amount of the liquid can be reliably filtered.

Further, when the liquid is filtered by the filter body 2, the filter case 20 of the filter body 2 is composed of the two halves 20a and 20b, so that the liquid is formed at the joined portion of the halves 20a and 20b. May leak.
Therefore, as shown in FIGS. 6, 11, and 12, a packing is provided at a joint portion of both halves 20 a and 20 b. That is, a rubber packing 42 is attached to the inner surface of both halves 20a, 20b provided with hinges 22 in a rectangular shape extending over the entire length of the filter case 20 in the longitudinal direction. The liquid is prevented from leaking to the outside from the combined portion of the two halves 20a, 20b on the side.

Moreover, as shown in FIG.3 and FIG.12, the packing 44 covering the full length of the vertical direction is affixed on the outer surface of the edge part 43 of the halved body 20a of the filter case 20. As shown in FIG. When the packing 44 is attached to the end portion 43 of the half body 20a and both the half bodies 20a and 20b are closed and fastened with the fasteners 23, the end portion 43 is attached to the other half body 20b. The outer surface of the packing 44 comes into contact with the inner surface of the end portion of the halved body 20b to prevent the liquid from leaking to the outside from this portion.
Further, as shown in FIG. 3, a substantially U-shaped handle 45 is fixed between the ends of one half 20 b of the filter case 20 of the filter body 2, and the filter body 2 holds the handle 45. Can be easily put in and out of the housing 3.

FIG. 13 is a perspective view of the filter device A as viewed from below the lid body 4, and a plurality of plate-like support pieces 51 are suspended from the lower surface of the top plate 50 of the substantially circular lid body 4. A ring disk-shaped presser plate 52 is integrally provided at the lower ends of these support pieces 51.
The size of the pressing plate 52 is substantially the same as the size of the flange 31 of the filter body 2, and as shown in FIG. 1, the lid body 4 is placed on the flange 31 via a rubber ring ring packing 53. A pressing plate 52 is placed.

On the other hand, as shown in FIGS. 1 and 2, a ring disk-shaped flange 54 is integrally formed outward from the outer peripheral edge of the upper end of the casing 3 of the casing 1. Further, the lid 4 is covered with a ring disc-like packing 55 made of rubber.
Further, a substantially U-shaped handle 56 is provided on the upper surface of the lid body 4 as shown in FIG. 2 so that the lid body 4 can be easily held by the handle 56.

As shown in FIGS. 1 and 2, an arbitrary number of filter members 21 are placed in a filter case 20 in a vertically stacked state, and both halves 20 a and 20 b are closed. Tighten 20a and 20b. Thereby, the outer peripheral surface of the packing 39 of the filter member 21 is elastically contacted with the inner peripheral surface of the filter case 20, and the sealing is maintained.
Next, as shown in FIG. 14, holding the handle 45, the filter body 2 is placed in the housing 3, and the flange 31 of the filter body 2 is placed on the flange 15 of the housing 3 via the packing 16. Thus, the filter main body 2 is positioned and arranged in the housing 3.

The lid body 4 is disposed on the upper surface opening surface of the housing 3 so as to cover the upper surface side of the filter body 2, and the housing 3 and the lid body 4 are tightened with a fastener 57 having the same structure as the fastener 23. To do. At this time, the pressing plate 52 of the lid body 4 elastically contacts the flange 31 of the filter main body 2 via the packing 53, and the flange 31 of the filter main body 2 elastically contacts the flange portion 15 of the housing 3 via the packing 16. At the same time, the upper surface of the flange 54 of the housing 3 is elastically brought into contact with the periphery of the lower surface of the top plate 50 of the lid body 4 via the packing 55.
Thereby, the space between the housing 3 and the filter body 2 and the space between the housing 3 and the lid body 4 are completely sealed by the packings 16, 53, and 55.

The liquid to be filtered is introduced from the inlet 11 of the filter device A and is filtered by the filter member 21 of the filter body 2 inside. The liquid filtered by the filter member 21 falls from the lower surface of the filter body 2 (the lower surface of the lowermost filter member 21) and is discharged from the discharge port 12 of the filter device A.
Further, by driving the discharge pump 14, it is possible to efficiently perform the filtering action even in the filter device A that is completely sealed by forcibly sucking the liquid.

Here, if the filter device A is filtered for a long time and a large amount of foreign matter is captured by the filter member 21 of the filter body 2, the pressure loss in the filtration path increases, so the filter member 21 must be replaced. It is necessary to do.
In such a case, as shown in FIG. 14, the lid body 4 of the filter device A is removed, and the filter body 2 is taken out of the housing 3 with the handle 45. Next, the fastener 23 of the filter main body 2 is removed, and one half body 20a is opened outward as shown in FIG.

By opening one half 20a of the filter case 20 by 90 degrees or more in the lateral direction, the internal filter member 21 can be easily taken out. For example, only the uppermost filter member 21 capturing the most foreign matter is taken out, Replace with a new filter member 21. Even when a new filter member 21 is placed in the filter case 20, half of the filter case 20 is open, so that the filter member 21 can be easily placed and placed in the filter case 20.
In addition, after removing the uppermost filter member 21, it is not necessary to replace the filter member 21 with a new filter member 21, so that foreign matters are captured by the second-stage filter member 21, and all the filter members 21 are used. Thereafter, a plurality of new filter members 21 may be inserted. Accordingly, it is only necessary to take out the uppermost filter member 21 that captures the largest amount of impurities, and it is not necessary to insert a new filter member 21 each time. Can be improved.

The size of the filter device A including the filter member 21 and the like is not particularly limited, and can be applied to a device that filters thousands of liters of liquid per minute by the capacity of the discharge pump 14 or the like. In particular, as the size of the apparatus increases, the use of a plurality of filter members 21 makes it easier to replace the filter member 21 because the size of one filter member 21 is small.
Further, the replacement of the filter member 21 that has captured the foreign matter can be replaced with one of the plurality of filter members 21, and the running cost can be suppressed at a very low cost.

In the above description, a plurality of filter members 21 are used, and the plurality of filter members 21 are mounted in the filter case 20 of the filter body 2, and the size of one filter member 21 is the filter case 20. The size of the filter member 21 may be increased as shown in FIGS. 16 and 17.
That is, in this example, the size of the filter member 21 is substantially the same as that of the filter case 20, and one filter member 21 is mounted in the filter case 20. Note that the configuration of the filter member 21 itself is the same as that of the previous embodiment, and a description thereof will be omitted.

  When the filtration capacity of the liquid is increased, if the dimensions of the filter member 21 are, for example, tens of centimeters or meters, the replacement of the filter member 21 is extremely difficult due to the size and weight of the filter member 21. It becomes difficult to do. That is, when the filter case 20 has a simple cylindrical shape, it is not easy to take out the filter member 21 upward from the filter case 20, but the filter case 20 is divided into two halves 20a and 20b as in the present invention. Since the halves 20a and 20b can be opened and closed in the left-right direction, the filter member 21 is inserted into and removed from the filter case 20 in the direction orthogonal to the axial direction, not in the axial direction of the filter case 20, that is, in the horizontal direction. Therefore, the operation of taking out and storing the filter member 21 into and from the filter case 20 can be performed very easily. In particular, even when the filter member 21 is large, the filter member 21 can be put in and out of the filter case 20 very easily.

As a liquid filtered by the filter device A using the filter member 21 in each of the above embodiments, for example, there is a factory waste liquid. When this factory waste liquid is filtered by the filter device A, the filtered liquid is BOD ( It is also suitable for biochemical oxygen demand) and COD (chemical oxygen demand).
In particular, the present invention is effective for the first time by using a functional composite nonwoven fabric containing activated carbon that specifies each of the elements described above as the material of the filter element 35 of the filter member 21 and passing the liquid in the axial direction of the filter member 21. It is what demonstrated.

  FIG. 19 shows a case where a liquid such as a factory waste liquid is filtered in the thickness direction of the functional composite nonwoven fabric containing activated carbon of the filter element 35 used in the present invention. It was not possible to capture in the first filtration step, and as a result it did not work.

  FIG. 20 shows a case in which factory waste liquid is filtered through an activated carbon layer 61 made of countless activated carbon in a container 60 such as a beaker. Even if the factory waste liquid (liquid) is filtered by its own weight, the filtration time is 3 times. It took ~ 4 days, the filtration efficiency was very poor, and the liquid after filtration was also low in transparency.

  However, in the filter device A of the present invention, since the transparency of the liquid such as the factory waste liquid after the filtration has become very high, it has been possible to capture a large amount of impurities contained in the liquid such as the factory waste liquid. Is. As a result, as described above, it is suitable for BOD (biochemical oxygen demand) and COD (chemical oxygen demand).

  Although this reason could not be analyzed clearly, the following reasons are presumed. Since liquid such as factory waste liquid does not pass through the thickness direction of the filter element 35 made of a functional composite nonwoven fabric containing activated carbon, it passes through the inside of the filter element 35 along the axial direction around which the filter element 35 is wound. As shown by the thick arrows in FIG. 18, the fiber passes through a myriad of particulate activated carbons 40 in the functional activated carbon layer 36, and the fibrous upper and lower layers 37 and 38 extend in multiple directions. As the yarn and the activated carbon 40 of the functional activated carbon layer 36 pass through the slightly entangled portion, many impurities contained in the liquid such as factory waste liquid cause the activated carbon 40 and the nonwoven fabric upper layer to 37, by adsorbing to the fibrous thread extending in multiple directions of the nonwoven fabric lower layer 38, a large amount of impurities can be trapped, and the filtration efficiency can be greatly increased by one filtration action. Erareru.

  In the above configuration, that is, in the filter device A as shown in FIG. 1, good results were obtained even when A heavy oil was filtered as a liquid to be filtered. The A heavy oil before filtration is black as is well known, but when it is filtered with the filter device A, it becomes a light brown with only one filtration action, the transparency becomes very high, and the oil after filtration becomes transparent. When placed in the bottle, the oil was transparent and the characters could be clearly read through the oil.

In each of the above embodiments, the case where the filter element 35 of the filter member 21 is used with the above-described specific material has been described. However, the filter element 35 may be configured with other materials depending on the type of filtrate. Of course it is also good.
Moreover, you may make it comprise the filter element 35 only with a general nonwoven fabric, without using activated carbon.

  In such a case, the filter device A is configured such that the filter case 20 of the filter body 2 can be opened and closed in the left-right direction at the side, and a plurality of filter members 21 are stacked in the vertical direction. The replacement of the member 21 can be performed smoothly, and only the upstream filter member 21 in which the most impurities are captured is taken out and filtered by the remaining filter member 21, so that the running cost is extremely low. be able to.

FIG. 21 shows a case where the filter device A is vertically connected through the pipe 63. If the liquid cannot be raised to a desired value by one filtration operation, the filter device A having the same configuration is again connected. By continuously passing the filtered liquid, impurities contained in the liquid are completely captured.
As a result, impurities contained in liquids such as factory waste liquid can be completely captured, and BOD (Biochemical Oxygen Demand) and COD (Chemical Oxygen Demand) can be accommodated in a single filtration step. To do.

  FIG. 22 shows another example of the filter device A. Basically, the filter case 20 of the filter main body 2 is provided with the function of the housing 3, and the configuration is simplified. Elements having the same functions as those in FIG. 1 are denoted by the same reference numerals, and detailed description thereof is omitted.

Similarly to the above embodiment, the filter case 20 is configured to be opened and closed by both halves 20a and 20b to the left and right, and an inlet 11 through which liquid is poured into the upper part of any of the halves 20a and 20b. Is provided. In addition, a discharge port 12 for discharging the liquid filtered by the filter member 21 is provided at the lower part of one of the halves 20a and 20b. In this embodiment, the lower portion of both halves 20a and 20b is joined. In this case, the liquid is prevented from leaking by the packing not shown.
In addition, although not shown in FIG. 22, the fastener 23 and the hinge 22 are provided similarly to the said embodiment.

  A mounting piece 30 for supporting the filter case 20 is integrally provided on the inner peripheral surface of the lower portion of the filter case 20 as in the above embodiment. In the illustrated example, four filter members 21 are stacked and arranged. Yes. Further, the number of filter members 21 may be any number. For example, one filter member 21 may be provided. Furthermore, the filter member 21 may have a single size corresponding to the size of the four filter members 21 by increasing the size of the filter member 21 in the axial direction.

  The embodiment shown in FIG. 22 also has the same effect as the previous embodiment.

Here, when the filter element 35 composed of the functional activated carbon layer 36 and the nonwoven fabric upper layer 37 and the nonwoven fabric lower layer 38 respectively bonded to the upper and lower surfaces of the functional activated carbon layer 36 is used for the filter element 35. The experimental results are shown below.
Incidentally, the basis weight of the functional active carbon layer 36 of the filter element 35, 280 g / m is ^2, 20 g / basis weight of the nonwoven fabric layer 37 and 30 g / m ² nonwoven fabric layer 38 of m ² is In total 50 g / m ^2. The adhesive layers of the adhesive for bonding the nonwoven fabric upper layer 37 and the nonwoven fabric lower layer 38 to the upper and lower surfaces of the functional activated carbon layer 36 are each 25 g / m ² and the total is 50 g / m ² . Moreover, the particle diameter of the activated carbon of the functional activated carbon layer 36 is 25 to 70 mesh, and the particles of the activated carbon are arranged in the nonwoven fabric upper layer 37 and the nonwoven fabric lower layer 38 so as to be as uniform as possible. Further, the weight of the filter element 35 is 380 g / m ² , the thickness thereof is 1.1 mm (peacock thickness meter), the pressure loss is 10 pascals (wind speed 10 cm / sec), and the air permeability is 105 cc / square cm / Second.
The filter element 35 was wound in several layers around the shaft core 34 with the width of the filter element 35, that is, the length in the axial direction being about 2.5 cm, and the filter member 21 was produced by the method described above. The diameter of the filter member 21 was about 16 cm. Five filter members 21 are stacked in the vertical direction (in FIG. 1, four filter members 21 are stacked as an example, but five are stacked). The experiment was conducted.

Regarding BOD (biochemical oxygen demand), it was 540 PPM before filtration, but it was 39 PPM in one filtration step. Regarding COD (chemical oxygen demand), it was 450 PPM before filtration. The result was 9 PPM in one filtration step.
Furthermore, with respect to A heavy oil, when expressed by the value of the Seybolt color layer, it was 8 (non-permeable state) before filtration to 2.0 (visible state) in one filtration step, which was favorable. The result was obtained.

It is sectional drawing of the filter apparatus in embodiment of this invention. It is an exploded sectional view of a filter device in an embodiment of the invention. It is a perspective view of a filter main part of a filter device in an embodiment of the invention. It is a front view of the filter main body in embodiment of this invention. It is a rear view of the filter main body in embodiment of this invention. It is a fracture exploded perspective view of a filter main part in an embodiment of the invention. It is a front view of the filter member accommodated in the filter main body in embodiment of this invention. It is a top view of the filter member accommodated in the filter main body in embodiment of this invention. It is sectional drawing of the filter member accommodated in the filter main body in embodiment of this invention. It is a principal part expanded sectional view of the filter element used for the filter member in embodiment of this invention. It is a principal part top view of the filter main body in embodiment of this invention. It is a principal part top view of the filter main body in embodiment of this invention. It is a perspective view of the cover body of the filter apparatus in embodiment of this invention. It is a perspective view of a filter device in the state where a lid body was removed in an embodiment of the invention. It is explanatory drawing which shows the state which opened the half body of the filter main body in embodiment of this invention. It is a front view of the filter element of the other example in embodiment of this invention. It is sectional drawing of the filter element of the other example in embodiment of this invention. It is explanatory drawing which shows the filtration effect | action in embodiment of this invention. It is a figure which shows the conventional filtration method in the case of demonstrating the filtration effect | action in embodiment of this invention. It is a figure which shows the other conventional filtration method in the case of demonstrating the filtration effect | action in embodiment of this invention. It is a figure at the time of carrying out the cascade connection of the some filter apparatus in embodiment of this invention. It is sectional drawing of the filter apparatus of the other example in embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 2 Filter main body 3 Housing | casing 4 Cover body 11 Inlet 12 Outlet 20 Filter case 20a, 20b Half split 21 Filter member 34 Axle core 35 Filter element 36 Functional activated carbon layer 37 Nonwoven fabric upper layer 38 Nonwoven fabric lower layer 39 Packing 40 Activated carbon

Claims (10)

A filter member (21) composed of a shaft core (34) and a filter element (35) wound in several layers around the shaft core (34);
A filter case (20) having a substantially cylindrical shape in which the filter member (21) is mounted and whose upper and lower surfaces are opened;
The filter device is characterized in that the filter case (20) can be opened and closed left and right, and a liquid is passed through the filter member (21) so as to be filtered in the axial direction.   The filter device according to claim 1, wherein a plurality of filter members (21) are stacked in the filter case (20).   A ring-shaped packing (39) having elasticity is mounted on the outer peripheral surface of the filter member (21), and the outer peripheral surface of the packing (39) is elastically contacted with the inner peripheral surface of the filter case (20). The filter device according to claim 1, wherein the filter device is characterized by the following. A filter member (21) composed of a shaft core (34) and a filter element (35) wound in several layers around the shaft core (34);
A filter case (20) having upper and lower surfaces in which one or a plurality of the filter members (21) are arranged in a stack;
The filter case (20) can be opened and closed left and right. An inlet (11) for injecting liquid is provided in the upper part of the filter case (20), and the filter member (21 is provided in the lower part of the filter case (20). And a discharge port (12) for discharging the liquid filtered in the axial direction.   A ring-shaped packing (39) having elasticity is mounted on the outer peripheral surface of the filter member (21), and the outer peripheral surface of the packing (39) is elastically contacted with the inner peripheral surface of the filter case (20). The filter device according to claim 4, wherein A filter member (21) in which a filter element (35) is wound in several layers around the shaft core (34), and an upper and lower surface on which one or a plurality of the filter members (21) are stacked are opened. The filter main body 2 is formed with the filter case (20) that can be opened and closed to the left and right by the half-divided body (20a) (20b) divided into approximately half,
A housing (3) for sealing and disposing the filter body 2 is provided, an inlet (11) for injecting liquid is provided at the top of the housing (3), and a lower portion of the housing (3) is provided. Is provided with a discharge port (12) for discharging the liquid filtered in the axial direction of the filter member (21) of the filter body 2.   A ring-shaped packing (39) having elasticity is mounted on the outer peripheral surface of the filter member (21), and the outer peripheral surface of the packing (39) is elastically contacted with the inner peripheral surface of the filter case (20). The filter device according to claim 6.   The filter element (35) is divided into a functional activated carbon layer (36) composed of countless activated carbon particles, and a nonwoven fabric upper layer (37) and a nonwoven fabric lower layer ( 38) and the filter device according to any one of claims 1 to 7. The weight of the filter element (35) is 380 ± 38 g / m ² , the thickness of the filter element (35) is 1.1 ± 0.2 mm (peacock thickness meter), and the pressure loss of the filter element (35) is 6-14. The filter device according to claim 8, wherein Pascal (wind speed: 10 cm / sec) and air permeability: 80 cc / square cm / second to 130 cc / square cm / second. In the filter element (35), the basis weight of the functional activated carbon layer (36) is 280 ± 28 g / m ^2, and the basis weight of the nonwoven fabric upper layer (37) and the nonwoven fabric lower layer (38) is 50 ± 5 g / m ^2, and the adhesive layer total of the adhesive for adhering the nonwoven fabric upper layer (37) and the nonwoven fabric lower layer (38) to the upper and lower surfaces of the functional activated carbon layer (36) is 50 ± 5 g / m ² . The particle diameter of the activated carbon of the activated carbon layer (36) is 25 to 70 mesh, and each particle of the activated carbon is arranged in a nonwoven fabric upper layer (37) and a nonwoven fabric lower layer (38). Filter device.

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