JP2014117681A - Filter element - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a filter element where cleaning can be more effectively performed by reducing the deviation of the intensity distribution of the force of a cleaning liquid when cleaning the filter element.SOLUTION: A filter element includes: a coiled spring-like wire material; a twisted core material positioned at the hollow part of the coiled spring-like wire material; and a pair of retainers sandwiching the coiled spring-like wire material. The filter element where cleaning can be more effectively performed can be provided.

Description

  The present invention relates to a filter element, and more particularly, to a filter element having a core material and a wound spring-shaped wire disposed around the core material.

  Various configurations have been proposed for the filter element used as a component of the filtration device. For example, as described in Patent Document 1 below, a wire wound in the shape of a coil spring (hereinafter referred to as “coil spring”). And a core material disposed in the hollow portion of the wire material, and a pair of receivers that are disposed at both ends of the core material and press the spring-like wire material. Useful.

  The filtration process using this filtration apparatus will be described as follows. First, this filter element is placed in the turbid liquid to be filtered, and the pressure on the outer periphery side of the filter element is increased while the pressure on the inner periphery side of the filter element is decreased (suctioned from the inner periphery side). A flow from the side to the inner peripheral side can be generated. And since the winding spring-like wire is arranged between them as described above, the gap of the winding spring-like wire at a constant interval becomes a filter for filtration, and filtration can be performed. In addition, when filtration is finished or when the efficiency of filtration is reduced, if the flow is reversed, the deposits (filtered material) accumulated on the outer peripheral side of the wound spring-like wire are easily separated from the wound spring-like wire. (Washing) and the filter element can be reused.

Japanese Unexamined Patent Publication No. Hei 8-196211

  By the way, as described above, when cleaning is performed after filtration, a liquid for cleaning (cleaning liquid) is supplied to the inner peripheral side of the filter element. However, in such a case, the liquid supplied to the inner peripheral side of the filter element proceeds as it is along the extending direction of the core material of the filter element, so that the entire periphery of the filter element is to be cleaned. In this case, it is necessary to wait until the level of the cleaning liquid is higher than that of the filter element. Even in such a position, the intensity distribution of the cleaning liquid has a large bias. As a result, this bias appears as a difference in cleaning power.

  Therefore, in view of the above problems, the present invention has an object to provide a filter element that can reduce the bias in the strength distribution of the momentum of the cleaning liquid when cleaning the filter element and can perform more effective cleaning. .

  As a result of intensive studies on the above problems, the present inventors have found that when the core material is twisted, a helically inclined portion is generated with respect to the extending direction of the filter element, and the cleaning liquid hits the inclined portion. It was discovered that a flow in the radial direction was generated in the flow of the water and improved the cleaning power, and the present invention was completed.

  That is, the filter element according to the first aspect of the present invention includes a wound spring-shaped wire, a twisted core disposed in the hollow portion of the wound spring-shaped wire, and a pair of receivers sandwiching the wound spring-shaped wire, Have

  As described above, the present invention can provide a filter element that can perform more effective cleaning.

1 is a schematic diagram of a filter element according to Embodiment 1. FIG. It is a figure which shows the outline of the winding spring-shaped wire which concerns on Embodiment 1. FIG. It is a figure at the time of seeing the winding spring-shaped wire which concerns on Embodiment 1 from the extending | stretching direction. It is sectional drawing of an example of the wound spring-shaped wire which concerns on Embodiment 1, and a figure which shows the arrangement | positioning relationship of an adjacent wire. FIG. 5 is a cross-sectional view of another example of a wound spring-like wire rod according to Embodiment 1 and a diagram showing the arrangement relationship between adjacent wire rods. It is the schematic at the time of seeing the core material concerning Embodiment 1 from the side. It is a figure for demonstrating how to count the number of the peaks of the core material which concerns on Embodiment 1. FIG. 3 is a schematic view of a top receiver according to Embodiment 1. FIG. It is a schematic sectional drawing at the time of combining the top receiver which concerns on Embodiment 1, a core material, and a wound spring-shaped wire. It is the schematic of the bottom receiver which concerns on Embodiment 1. FIG. FIG. 3 is a cross-sectional view in the vicinity of a bottom receiver according to the first embodiment. 6 is a schematic diagram of a filter element according to Embodiment 2. FIG. It is a figure which shows the outline of the top receiver which concerns on Embodiment 2. FIG. 6 is a schematic cross-sectional view of the vicinity of a top receiver of a filter element according to Embodiment 2. FIG. 6 is a schematic view of a filter element according to Embodiment 3. FIG. It is a figure which shows the outline of the core material which concerns on Embodiment 3. FIG. It is a figure for demonstrating the connection method of the core material which concerns on Embodiment 3. FIG.

  Embodiments of the present invention will be described below with reference to the drawings. However, the present invention can be implemented in many different modes and is not limited to the embodiments shown below. Note that in this specification, portions having the same or similar functions are denoted by the same reference numerals, and repeated description thereof is omitted.

(Embodiment 1)
FIG. 1 is a schematic view of a filter element (hereinafter referred to as “the present filter element”) 1 according to the present embodiment, and FIG. These are figures at the time of seeing a winding spring wire material from the extending direction.

  As shown in these drawings, the filter element 1 includes a wound spring-shaped wire 2, a core material 3 disposed in a hollow portion of the wound spring-shaped wire 2, and a pair of receivers 4 that sandwich the wound spring-shaped wire 2. 5 (top receiver 4 and bottom receiver 5).

  In this embodiment, the first wound spring-shaped wire 2 is a wire wound in a wound spring shape while maintaining a predetermined inner diameter, and adjacent wire portions are densely arranged with a predetermined distance. It is. When configured and functioning as a filter element, the wound spring wire substantially functions as a filter member. The material of the wire is not limited, but stainless steel is a preferred example because it is resistant to rust. In addition, when it is stainless steel, although it is not necessarily limited, it is more preferable that it is austenitic stainless steel, for example, SUS316 and SUS317 can be illustrated. Further, the wound spring-like wire can be made of a resin material such as PCV and styrene, and a material impregnated with this resin material.

  Here, the “inner diameter” of the wound spring-shaped wire 2 refers to the inner diameter of a hollow cylindrical shape measured in a state where no pressure difference is generated between the inner peripheral side and the outer peripheral side of the wound spring-shaped wire (for example, FIG. 3). reference).

  Further, in the present filter element, although not limited, a large number of protrusions 22 having a flat portion 221 are formed at a certain distance on the wound spring-shaped wire 2. The flat portion 23 is formed on the side opposite to the side where the flat portion 221 of the protrusion 22 is formed. By providing the protrusions 22, it can serve as a spacer between the wires of the wound spring-like wire, can keep the distance between the wires constant, and the flat portions 221 are adjacent to each other by providing the protrusions 22 and the wires. A contact area with the wire can be ensured, and problems such as overlapping or buckling of the wires can be greatly reduced. FIG. 4 shows a cross-sectional view ((A)) of a wound spring-like wire and an arrangement relationship ((B)) between adjacent wires.

  In addition, in this embodiment, it is set as the structure which provides a flat part in each processus | protrusion and wire itself, However, The dent matched with the curved surface of the wire is formed in processus | protrusion like the cross-sectional view shown in FIG. It may be what you did. By doing so, the wire itself does not need to be processed, and even when the wire is rotated or moved, the arrangement of the spring-spring-like wire 2 is made more stable. Can do. 5A shows a cross-sectional view of a wound spring-like wire, and FIG. 5B shows an arrangement relationship between adjacent wires.

  Further, the core material 3 according to the present embodiment is a member that is stretched in one direction, and has a top receiver 4 and a bottom receiver as a pair of receivers in the vicinity of both ends. The wound wire-like wire 2 can be stably held by sandwiching the wire-like wire 2. Although the material of the core material 3 is not limited, stainless steel that is resistant to rust can be suitably used as in the case of the wound spring wire, but a resin material or resin as in the case of the wound spring wire. It is also possible to comprise a material impregnated with the material.

  Further, the core material 3 according to the present embodiment has a shape in which a plate-like member is twisted (a shape in which a flat surface of a flat plate rotates along the extension direction when viewed from the extension direction). The part draws a spiral along the stretching direction. Since the core material 3 has a twisted shape, the cleaning liquid supplied from the top support 4 side can be directed in the radial direction, and the cleaning liquid can be supplied with less deviation in the stretching direction and the radial direction. And cleaning efficiency can be increased. In addition, the twisted shape can increase the strength of the core material 3 itself, and can also make the directionality uniform. A schematic view of the core material 3 according to this embodiment when viewed from the side is shown in FIG.

  In addition, the twisted state of the core material 3 according to the present embodiment is not limited as long as it has the above-described function, and can be appropriately adjusted depending on the width, length, thickness, and material of the core material. It is preferable that the width of the core material is 5 mm or more and 100 mm or less, and the number of twisted ridges is 1 or more and 30 or less, and more preferably, when the width is 5 mm or more and 20 mm or less, the width is 1 or more and 30 or less and the width is larger than 20 mm. When it is 40 mm or less, it is preferably 1 or more and 15 or less, when it is larger than 40 mm and 60 mm or less, it is 1 or more and 10 or less, and when it is larger than 60 mm and 100 mm or less, it is preferably 1 or more and 5 or less. By making the number of twisted ridges 1 or more, it becomes possible to ensure uniformity in the circumferential direction, and by making it 30 or less, it is possible to prevent unnecessarily weakening the flow of cleaning liquid due to excessive twisting. it can. Here, the “mountain” refers to one surface of the untwisted portion of the core material 3 (one of both ends of the core material) as a reference surface, and the core material 3 of the twisted portion that can be confirmed with reference to this reference surface. The number of vertices refers to the number of vertices. An image diagram in this case is shown in FIG.

  In the present embodiment, the degree of twist may be weighted. Specifically, it is preferable that the stretching direction is divided into a plurality of regions, each of which has a different twist, and the twist is tighter or looser along the stretch direction of the core material, more preferably through. It is that it becomes tight as it goes to the bottom receptacle 5 side from the top receptacle 4 side which has a hole. By doing in this way, it becomes possible to adjust the inclination of the core material with respect to the extending direction according to the water pressure of the introduced cleaning liquid, and to adjust the supply of the cleaning liquid in the radial direction. Here, the “twisting degree” specifically refers to the rotation angle of the flat plate relative to the unit length in the stretching direction. The larger the angle, the tighter the twist, and the smaller the angle, the looser the twist.

  In addition, the length of the core material 3 according to the present embodiment is not limited as long as it has the above function, but it is preferable that the length is, for example, in the range of 100 mm to 1800 mm.

  In the present embodiment, the top receiver 4 is disposed in the vicinity of the one end 32 of the core member, and can be paired with the bottom receiver 5 to hold the wound spring-like wire. Although the structure of the top receiver 4 is not necessarily limited, it is preferable that the cylindrical hollow 41 is formed, and it has the level | step difference surface 42 for applying a winding spring-shaped wire inside. It is an example. FIG. 8 shows a schematic diagram of the top receiver 4, and FIG. 9 shows a schematic cross-sectional view when the top receiver 4, the core material 3, and the wound spring wire 2 are combined. The material of the top support 4 is not limited, but stainless steel is a preferred example because it is resistant to rust. In addition, when it is stainless steel, although it is not necessarily limited, it is more preferable that it is austenitic stainless steel, for example, SUS316 and SUS317 can be illustrated. In some cases, a resin material such as PVC or styrene and a material impregnated with the resin material may be used.

  Further, in the present embodiment, the bottom receiver 5 is disposed in the vicinity of the other end 31 of the core material 3 and can be paired with the top receiver 4 to hold the wound spring-like wire 2. . The configuration of the bottom receiver 5 is not limited, but includes a bottom plate 51 for suppressing the wound spring-like wire 2 and side surfaces 52 arranged around the bottom plate 51. . The bottom support 5 is preferably fixed by a bolt 311 fixed to the core metal 3 and a nut fitted to the bolt 311. FIG. 10 is a schematic view of the bottom holder 5 and FIG. 11 is a cross-sectional view in the vicinity of the bottom holder 5.

  In the present embodiment, the wound spring-like wire 2 is disposed between the top receiver 4 and the bottom receiver 5, but is provided with play between the top receiver and the bottom receiver, In addition, the inner diameter of the hollow portion of the wound spring-shaped wire 2 is larger than the width of the core material 3 in the range of 10 μm to 2 mm. By making it 10 μm or more larger than the width of the cored bar 3, there is an effect that it is possible to prevent buckling that occurs when pressure is applied from the outer peripheral side, and by setting it to 2 mm or less, the wound spring-like wire 2 This has the effect of suppressing unnecessary bending. The amount of play can be adjusted as appropriate depending on the pressure applied to the filter element and the inner diameter. For example, under the condition of the inner diameter, the step surface 42 of the top receiver 4 and the bottom receiver 5 It is preferably 0.05% or more and 5% or less of the distance to the bottom surface 51. If 0.05% or more under the condition of the inner diameter, even if the pressure is applied from the outer peripheral side and the inner diameter is reduced and the length of the wound spring-like wire is increased, It is possible to reduce the possibility of buckling due to unnecessarily longer than between the bottom holders 5, and by setting it to 5% or less, even when the wound spring-like wire becomes longer, the wound spring wire becomes the top receiver. It is possible to prevent play from occurring between 4 and the bottom support 5.

  Moreover, it is preferable that both ends of the wound spring wire 2 according to the present embodiment are polished and provided with flat surfaces. By doing so, it is possible to reduce gap leakage and increase the efficiency of filtration.

  As described above, the filter element according to the present embodiment has a higher filtering ability and a higher reliability. More specifically, since the filter element according to the present embodiment has a shape in which the core material 3 is twisted, the core material 3 has a surface inclined with respect to the extending direction of the filter element. When the cleaning liquid is supplied to the inner peripheral side of the filter element, the cleaning liquid hits the inclined surface and a flow including the radial direction of the wire is generated. As a result, it is possible to supply the cleaning liquid with less deviation in the stretching direction and the radial direction without significantly impairing the supplied water pressure as compared with the conventional case, and the cleaning efficiency can be greatly improved. Moreover, since the core material has a twisted shape, the strength of the core material itself can be increased, and the directionality can be made uniform.

(Embodiment 2)
The present embodiment is substantially the same as the first embodiment, but the shape of the core material 3 is different. The rest of the configuration is substantially the same as that of the first embodiment, and therefore only different parts will be mainly described, and description of other similar configurations will be omitted. FIG. 12A shows a schematic view when viewed from the side, and FIG. 12B shows a schematic view when viewed from the front.

  The core material 3 according to the present embodiment is characterized in that a plurality of plate-like members are connected in a radial pattern and are twisted around a connection point. In this way, when twisted and manufactured, a stronger twisting force is required, but the same effect as in the first embodiment can be obtained, and the core material has higher strength and uniformity in cleaning ability. There is an effect that can be secured.

  In the example of the present embodiment, four plate-like members are connected. However, changing the number of sheets such as three or five in some cases can be appropriately adjusted.

  In the present embodiment, the shape and the like of the top receiver 4 are slightly different depending on the structure of the core material 3. This point will be described below.

  13A and 13B are diagrams showing an outline of the top support 4 according to the present embodiment. FIG. 13A shows a view when viewed from the side, and FIG. 13B shows a view when viewed from the front. In this embodiment, the top receiver 4 is disposed in the vicinity of both ends 31 and 32 of the core material, and can be paired with the bottom receiver 5 to stably hold the wound spring-like wire 2. A metal fitting in which a through hole is formed. Moreover, although not necessarily limited, the thread groove is dug in the front-end | tip and it can connect to the below-mentioned connection part agent. Although the structure of the top support 4 is not necessarily limited, it is cylindrical and has a through hole 41 formed therein, and has a stepped surface 43 for applying the wound spring-like wire 2 therein. It is a preferable example that it is comprised.

  First, as shown in FIG. 14 (A), the filter element according to the present embodiment is provided with a stepped portion 43 in the top receiving member 4 and applies the spring-like wire 2 to the core 3. The step portion 31 is also applied to the internal step portion. On the other hand, a stepped portion 44 whose tip side has a larger diameter is also provided at the tip portion of the top receiver 4 so that the stepped portion 32 at the tip of the core member 3 is hooked. Thereby, the top receiver 4 and the core material 3 can be fixedly arranged, and the spring-like wire can be fixed. In this case, the method for inserting the core material 3 is not limited. For example, the core material 3 is divided into a plurality of members such as a tip portion and other portions, and each is inserted and screwed. Or by welding or the like (see FIG. 15B).

  As described above, the filter element according to the present embodiment has a higher filtering ability and a higher reliability.

(Embodiment 3)
This embodiment is substantially the same as Embodiment 1 except that not only the top holder but also the bottom holder is provided with a through hole. Only different points will be mainly described, and description of other similar configurations will be omitted. FIG. 16 is a schematic view of a filter element according to the present embodiment.

  In the present embodiment, both the top receiver 4 and the bottom receiver 5 have the same configuration as the top receiver 4 in the second embodiment, and each has a through hole. With this configuration, a plurality of filter elements are connected to each other, a longer configuration is possible, and a filter element is provided in which the filtering ability is not easily lowered even when the extending direction of the filter element is inclined with respect to the direction of gravity be able to.

  Moreover, the outline of the core material which concerns on this embodiment is shown in FIG. (A) shows the side surface, and FIG. (B) shows the front surface. The core material is the same as that of the first embodiment except for the end portion. FIG. 17 is a diagram for explaining the connection method. As shown in the figure, a stepped portion 43 is provided in the top receiver 4, and the spring-like wire 2 is applied, and the stepped portion 31 of the core material 3 is also applied to the internal stepped portion. On the other hand, a stepped portion 44 whose tip side has a larger diameter is also provided at the tip portion of the top receiver 4 so that the stepped portion 32 at the tip of the core member 3 is hooked. Thereby, the top receiver 4 and the core material 3 can be fixedly arranged, and the spring-like wire can be fixed. In this case, the method for inserting the core material 3 is not limited. For example, the core material 3 is divided into a plurality of members such as a tip portion and other portions, and each is inserted and screwed. It can be realized by fixing by welding or welding.

  Further, according to the present embodiment, since the through holes are formed along the extending direction of the filter element, the cleaning liquid can be freely supplied along the extending direction of the filter element and the opposite direction, thereby increasing the cleaning ability. In addition, various cleaning methods can be realized. By the way, when cleaning such a filter element, it becomes possible to clean because the same configuration as in the first embodiment is achieved by closing the path leading to one through hole. However, when the path is not closed, the core material is used. In the case where only the flat plate is not twisted, even if the corner cleaning liquid is supplied into the filter element, the flow does not change and is discharged as it is from the other through hole. However, when the core material is twisted as in this embodiment, it is possible to include a radial component in the flow of the cleaning liquid because there is an inclined portion in the core material, as in the above embodiment. Even if both ends are opened, there is an effect that the cleaning ability can be secured.

  As described above, the filter element according to the present embodiment has a higher filtering ability and a higher reliability.

  The present invention has industrial applicability as a filter element.

Claims (7)

A coiled spring wire,
A twisted core material disposed in the hollow portion of the wound spring-like wire; and
And a pair of receivers sandwiching the wound spring-like wire rod.   2. The filter element according to claim 1, wherein the twisted core member has a width of 5 mm or more and 20 mm or less and a number of twist crests of 1 or more and 30 or less.   2. The filter element according to claim 1, wherein the twisted core member has a width greater than 20 mm and equal to or less than 40 mm, and the number of twist peaks is 1 or greater and 15 or less.   2. The filter element according to claim 1, wherein the twisted core member has a width greater than 40 mm and less than or equal to 60 mm, and the number of twist peaks is 1 or more and 10 or less.   2. The filter element according to claim 1, wherein the twisted core member has a width greater than 60 mm and less than or equal to 100 mm, and the number of twist peaks is 1 or more and 5 or less.   The filter element according to claim 1, wherein the twisted core member includes a plurality of plates, and the surfaces of the plates are connected radially.   The filter element according to claim 1, wherein the pair of receivers are a pair of penetration receivers.