JP5404488B2 - Filter device and facility using the same - Google Patents

Description

  The present invention relates to a filter device and a facility using the same.

  Conventionally, in a facility where the liquid temporarily stored in the storage space is discharged to the outside through a pipe or sent to another storage space, dust is removed from the liquid at the outlet of the discharge side pipe (connection pipe). A filter is attached. For example, the pipe port filter described in Patent Document 1 has a mesh-like mesh portion, and is attached to the pipe port of the discharge side connecting pipe in front of the rainwater storage and penetration facility.

  By the way, this kind of pipe filter requires clogging countermeasures from the viewpoint of ensuring reliability. For example, as described above, clogging is likely to occur in a pipe filter used in a facility where a large amount of various kinds of garbage flows. If this clogging of the pipe opening filter is left unattended, the inflow of rainwater into the storage and permeation facility for rainwater and the like is inhibited, and the rainwater that could not flow into the facility is preliminarily overflowed.

  However, the tube filter described in Patent Document 1 cannot sufficiently solve the above-described clogging problem. Explaining concretely by type of trash, firstly, in the cage, such as in the front, dust flowing in with rainwater or small trash with a low specific gravity floats near the water surface, forming a layer of trash. Has been. In the pipe filter of Patent Document 1, since rainwater flows out directly through the mesh portion, the dust layer adheres to the surface of the mesh portion as it is, and clogging occurs.

  Secondly, small sharp debris such as dead branches flows into raindrops along with rainwater. In the pipe filter of Patent Document 1, rainwater flows out directly through the mesh portion, so that sharp dust sticks into the mesh portion, and other dust adheres one after another using the stuck dust as a scaffold. Clogging occurs.

  Thirdly, garbage with a large surface area, such as fallen leaves and plastic bags, flows into the cage such as the front. In the pipe filter of Patent Document 1, since rainwater flows out directly through the mesh portion, dust having a large surface area adheres to the surface of the mesh portion as it is and causes clogging.

  In the pipe port filter described in Patent Document 1, it is conceivable to increase the surface area of the mesh portion in order to avoid the clogging problems related to the first to third types described above. The total size of the bag must be increased by increasing the size of the bag, which increases the cost.

  Furthermore, the connecting pipe is usually attached at a distance in the depth direction from the bottom portion such as the head, and the space from the bottom portion to the pipe opening of the connecting pipe constitutes a mud reservoir. Here, since a large amount of earth and sand flows into the front, etc., as in Patent Document 1, in the configuration in which the pipe filter is directly attached to the pipe opening of the connection pipe, the sediment on which the pipe filter is accumulated This causes a problem of being buried. In order to solve this problem, it is necessary to frequently remove deposits, resulting in high costs.

JP 2009-074288 A

  The subject of this invention is providing the filter apparatus which can prevent clogging, and the facility using the same.

  Another subject of this invention is providing the filter apparatus which can capture | acquire dust appropriately, and a facility using the same.

  Still another object of the present invention is to provide a filter device capable of reducing maintenance costs and a facility using the same.

  In order to solve the above-described problem, the present invention is a filter device used for removing dust in a liquid, and includes a first member and a second member. The first member is tubular and has a through hole, and the through hole penetrates the tubular side wall portion in the thickness direction.

  The second member has buoyancy with respect to the liquid described above. Further, the second member is tubular, has an opening at one end in the tube axis direction, and has an inner dimension larger than the outer dimension of the side wall portion constituting the first member. Furthermore, the second member is attached to the outer surface of the side wall portion constituting the first member so as to be movable along the tube axis direction of the first member, and covers the through hole in the attached state.

  The filter device according to the present invention is attached to a connecting pipe to constitute a facility. The facility according to the present invention includes a storage space, a filter device, and a connecting pipe. The storage space extends in the depth direction and stores the liquid sent from the outside. One end of the connection pipe is connected to the storage space. In the filter device, one end in the tube axis direction is connected to the connecting pipe, and the other end in the tube axis direction rises along the depth direction of the storage space.

  As described above, in the filter device constituting the facility according to the present invention, the first member is tubular and has a through hole, and the through hole penetrates the tubular side wall portion in the thickness direction. Therefore, the liquid stored in the storage space can be guided to the inside of the first member from the through hole, and can flow down to the connecting pipe through the first member.

  In the filter device, one end in the tube axis direction is connected to the connecting pipe, and the other end in the tube axis direction rises along the depth direction of the storage space. According to this structure, there is no problem that the filter device is buried in the deposit accumulated at the bottom of the storage space. Therefore, it is not necessary to frequently remove the deposit, and the maintenance cost can be reduced.

  Moreover, since the other end of the tube axis direction rises along the depth direction of the storage space, the filter device can easily perform the operation of checking for clogging and cleaning as necessary. Therefore, the maintenance cost is reduced.

  The second member constituting the filter device is tubular, has an opening at one end in the tube axis direction, and has an inner dimension larger than the outer dimension of the side wall portion constituting the first member. Furthermore, the second member is attached to the outer surface of the side wall portion constituting the first member so as to be movable along the tube axis direction of the first member, and covers the through hole in the attached state. According to this configuration, a gap is formed between the opposing surfaces of the first member and the second member according to the dimensional difference. Since the gap communicates with the outside through the opening of the second member, the dust contained in the liquid in the storage space can be caught by the opening of the gap by appropriately adjusting the gap.

  Further, the clogging prevention effect of the filter device according to the present invention will be described for each type of dust. First, the gap of the filter device communicates with the outside through the opening of the second member. By disposing the opening at a position deeper than the vicinity of the liquid surface where the liquid floats (upper layer portion), the liquid below the middle layer portion without the dust layer can be sucked. Therefore, it is possible to protect the through hole from the dust layer floating in the upper layer portion, and to avoid the problem that the through hole is clogged.

  Moreover, since the gap of the filter device communicates with the outside through the opening of the second member, even if a part of the dust layer is likely to be sucked into the gap together with the liquid, It is caught in the opening of 2 members. Therefore, it is possible to protect the through hole from the dust layer floating in the upper layer portion, and to avoid the problem that the through hole is clogged.

  Second, since the gap of the filter device communicates with the outside through the opening of the second member, sharp dust such as dead branches is also captured by the opening of the second member. Therefore, the problem of clogging caused by sharp dust can be avoided.

  Third, since the gap of the filter device communicates with the outside through the opening of the second member, dust having a large surface area such as fallen leaves and a plastic bag is also captured by the opening of the second member. Therefore, it is possible to protect the through hole from dust having a large surface area and to avoid a problem that the through hole is clogged.

  Since the second member has buoyancy with respect to the liquid, for example, when the amount of liquid flowing into the storage space suddenly increases and the liquid level of the liquid becomes high, the second member depends on the liquid level position. The two members can float and the through hole can be exposed. As a result, the liquid flows into the first member directly through the through hole without passing through the gap, and the liquid discharge efficiency is increased. As described above, according to the structure in which the liquid discharge efficiency can be adjusted according to the liquid level position of the liquid in the storage space, problems such as overflow can be avoided.

  Further, by appropriately adjusting the hole shape and hole diameter of the through hole, it is possible to catch dust contained in the liquid in the storage space at the opening end of the through hole. Therefore, it is possible to avoid a problem that dust in the liquid flows into the connecting pipe.

  Moreover, since the position of the through hole exposed to the outside by the rising of the second member is deeper than the upper layer portion, it is possible to suck in the liquid below the middle layer portion without the dust layer. Therefore, it is possible to protect the through hole from the dust layer floating in the upper layer portion, and to avoid the problem that the through hole is clogged.

As described above, according to the present invention, the following effects can be obtained.
(1) A filter device capable of preventing clogging and a facility using the same can be provided.
(2) It is possible to provide a filter device that can appropriately capture dust and a facility using the filter device.
(3) To provide a filter device capable of reducing maintenance costs and a facility using the same.

  Other objects, configurations and advantages of the present invention will be described in more detail with reference to the accompanying drawings. The accompanying drawings are merely examples.

It is a perspective view of a filter device concerning one embodiment of the present invention. FIG. 2 is a cross-sectional view taken along line 2-2 of FIG. It is a perspective view which takes out and shows a part of filter apparatus of FIG. FIG. 2 is an exploded structural view showing a part of the filter device of FIG. It is front sectional drawing which takes out and shows a part of filter apparatus of FIG. It is a perspective view which takes out and shows a part of filter apparatus of FIG. It is a fragmentary sectional view which abbreviate | omits and shows the facility which concerns on one Embodiment of this invention. It is a fragmentary sectional view which expands and shows a part about the facility of FIG. It is a fragmentary sectional view which expands and shows a part about the facility of FIG. It is a fragmentary sectional view which expands and shows a part about the facility of FIG. It is a fragmentary sectional view which abbreviate | omits and shows the structure which concerns on another embodiment of this invention. It is a fragmentary sectional view which abbreviate | omits and shows a facility which concerns on another embodiment of this invention. It is a fragmentary sectional view which abbreviate | omits and shows a facility which concerns on another embodiment of this invention. It is sectional drawing of the filter apparatus which concerns on another embodiment of this invention. It is a perspective view which takes out and shows a part of filter device concerning another embodiment of the present invention.

  1 to 15, the same reference numerals indicate the same or corresponding parts. Moreover, in description of FIG. 1 thru | or FIG. 15, since the pipe-axis direction of a filter apparatus and the depth direction of a storage space correspond, it shows with the code | symbol L uniformly.

  The filter device of FIGS. 1 and 2 includes a first member 10, a second member 20 (see FIGS. 4 and 5), and a fixture 30 (see FIG. 6).

  The first member 10 is a pipe having a circular cross section, a cylinder, or a tube, and is made of a synthetic resin such as polyethylene (PE), polypropylene (PP), or vinyl chloride resin (PVC). But the 1st member 10 can also use a thing with a cross-sectional angle shape. Further, the material used is not limited to a synthetic resin. For example, a metal material such as aluminum can be used from the viewpoint of corrosion resistance.

  The first member 10 has a tube axis direction L, and has a bent portion at an intermediate portion from one end 101 to the other end 102 viewed in the tube axis direction L. The first member 10 in FIGS. 1 and 2 has a connection structure in which a straight pipe portion 11 (see FIG. 3) and a curved pipe portion 13 are connected. However, the straight pipe portion 11 and the curved pipe portion 13 may be integrated.

  The straight pipe part 11 of FIGS. 1 to 3 has a base part 110, a hollow part 111, and a plurality of through holes 112. The base portion 110 constitutes a side wall portion of the straight pipe portion 11 and has a maximum passing outer diameter dimension D1 (outer dimension D1) viewed from the outer surface 113. The hollow portion 111 is an internal space defined by the inner surface of the base portion 110, extends inside the base portion 110 along the tube axis direction L, and opens at both ends in the tube axis direction L.

  Each of the plurality of through holes 112 penetrates the base body part 110 in the thickness direction intersecting the tube axis direction L and communicates with the hollow part 111. The opening edge of the through hole 112 has a perfect circle shape from the front view from the viewpoint of ease of molding. However, the opening edge of the through hole 112 is not limited to a perfect circle shape, and may be an elliptical shape, a square shape, or a linear shape (slit shape).

  The plurality of through-holes 112 are equally distributed at intervals along the circumferential direction intersecting the tube axis direction L in the portion from the vicinity of the intermediate portion of the base body 110 to the one end 101 viewed in the tube axis direction L. It is formed in three stages along the tube axis direction L. S indicated by a one-dot chain line indicates a region (water flow region s) in the outer surface 113 in which a plurality of through holes 112 are provided. The water flow area s can be appropriately set to a desired area of the outer surface 113 by expanding or reducing the opening area of each through hole 112 or increasing or decreasing the number of rows of the through holes 112 viewed in the tube axis direction L. .

  The curved pipe part 13 includes a base part 130, a hollow part 131, and two pipe joint parts 132 and 133. The base portion 130 constitutes the peripheral wall of the bent tube portion 13. The hollow portion 131 is an internal space defined by the inner surface of the base portion 130, extends inside the base portion 130 along the tube axis direction, and opens to the outside at both ends in the tube axis direction.

  The two pipe joint portions 132 and 133 are provided at positions intersecting with each other on both sides in the tube axis direction of the base portion 130, and have a concave step portion whose outer dimension D 1 is enlarged on the inner surface, and the other end of the straight pipe portion 11. Is inserted. 2 is a 90 ° bent pipe in which two pipe joint portions 132 and 133 are orthogonal to each other, and the other end of the straight pipe portion 11 is fitted to one pipe joint portion 132, and the other The end of a connection pipe (not shown) on the discharge side is fitted inside the pipe joint 133.

  1, 2, 4, and 5 includes a hollow portion 22, an opening 23, a storage space (24), a buoyancy body 28, and a ceiling filter tool 29. Yes. More specifically, the second member 20 has a double cylinder structure in which the base portion integrally couples the outer cylinder part 25 and the inner cylinder part 26.

  The outer cylinder part 25 is a bottomed cylinder shape with a circular cross section, and includes a side wall part 250, an opening part 252, a hollow part (24), and a bottom part 27. The side wall portion 250 constitutes a rising wall of the outer cylinder portion 25 and has a maximum passing inner diameter dimension D3 (inner dimension D3) viewed from the inner surface 251. The hollow portion (24) is defined by the inner surface 251 and the bottom portion 27. The opening 252 opens to the opposite side of the bottom 27 at one end of the side wall 250 in the tube axis direction L and communicates with the hollow portion (24).

  The inner cylinder portion 26 is a bottomed cylinder shape having a circular cross section, and includes a side wall portion 260, an opening portion 23, and a bottom portion 27. The side wall portion 260 constitutes a rising wall of the inner cylindrical portion 26, and has a maximum delivery outer diameter dimension D4 (outer dimension D4) viewed from the outer surface 261 and a maximum delivery inner diameter dimension D5 (inner dimension D5) viewed from the inner surface 262. Have. The hollow portion 22 is defined by an inner surface 262 and a bottom portion 27. The opening 23 opens to the opposite side of the bottom 27 at one end in the tube axis direction L of the side wall 260 and communicates with the hollow portion 22.

  In the hollow portion (24) of the outer cylinder portion 25, a storage space 24 corresponding to the dimensional difference between the inner dimensions D 3 and D 4 is formed between the opposing surfaces of the inner surface 251 and the outer surface 261. The buoyancy body 28 is accommodated.

  The buoyancy body 28 is made of a low density material having a buoyancy with respect to a liquid, specifically water, or a material having a small specific gravity. The buoyancy body 28 in FIG. 2 is made of expanded polystyrene (EPS) from the viewpoint of material cost, ease of molding, and the like. The buoyancy body 28 is obtained by molding EPS into a cross-sectional view, a cylindrical shape, or a ring shape, and is attached to the outside of the inner cylinder portion 26 in the storage space 24. However, since the buoyancy body 28 is attached in order to obtain buoyancy, it can be configured by using a tube body or wood sealed with gas in addition to foamed plastic other than EPS. In the present specification, the “foamed plastic” refers to a material in which a gas is finely dispersed in a synthetic resin as a base material and molded into a foamed or porous shape.

  In the filter device of FIG. 2, the second member 20 is attached to the outer surface 113 so as to be movable along the tube axis direction L, and covers all of the through holes 112 constituting the water flow area s in the attached state. ing. Further, the filter device of FIG. 2 has a gap g. The gap g is formed between the opposing surfaces of the outer surface 113 and the inner surface 262 in accordance with the dimensional difference between the outer dimension D1 of the base 110 and the inner dimension D5 of the inner cylinder 26, and communicates with the outside through the opening 23. doing. The gap g is preferably a passing dimension of about 2 to 5 mm, more preferably a passing dimension of about 2 to 3 mm. If the gap g is narrowed, the dust trapping function of the filter device is improved. On the other hand, if the gap g is excessively narrow, the liquid hardly flows into the gap g.

  Further, the inner cylinder portion 26 has a through hole 270 in a portion corresponding to the one end 101 of the first member 10 in the bottom portion 27. The through hole 270 communicates with the hollow portion 111 through an open end provided at one end 101. In other words, the one end 101 of the first member 10 hits the inner surface of the bottom portion 27 where the through-hole 270 is not provided, and the hollow portion 111 and the through-hole 270 communicate with each other in the abutted state. Yes.

  The ceiling filter tool 29 has a mesh portion 290 and is fitted in the through hole 270. The mesh part 290 is formed by knitting metal fine wires in a mesh shape or by stamping a metal material. Further, in place of the ceiling filter tool 29, a through hole may be provided directly in a plane corresponding to the ceiling portion of the bottom portion 27.

  1, 2, and 6 includes two holding portions 31 and 32, two support arms 33 and 34, and an attachment portion 35. Each of the two holding portions 31 and 32 constitutes a ring-shaped or bowl-shaped divided piece and is detachably attached to the outer surface 113 in a combined state. One end of each of the two support arms 33 and 34 is detachably coupled to the holding portions 31 and 32, and the other end is coupled to the attachment portion 35. The attachment portion 35 is attached to a side wall that forms a storage space (not shown).

  FIG. 7 is a partial cross-sectional view showing a facility according to an embodiment of the present invention with a part thereof omitted. The facility of FIG. 7 is a front for discharging rainwater to the rainwater storage and penetration facility, and includes the filter device 1, the inflow side connection pipe 61, the storage space 62, and the discharge side connection pipe 63. Have. The storage space 62 is defined by a side wall portion 620 and a bottom portion 621 of the housing. Further, in the storage space 62, the space from the inner surface of the bottom 621 to the lower end of the second member 20 constituting the filter device 1 functions as a mud reservoir 622. The connecting pipe 61 is connected to the storage space 62 through the side wall portion 620 of the housing, and supplies rainwater or the like sent from the external facility in the direction indicated by the arrow F to the storage space 62. The storage space 62 extends in the depth direction L and stores rainwater and the like. One end of the connection pipe 63 passes through the side wall portion 620 of the housing and is connected to the storage space 62.

  The filter device 1 is described with reference to FIGS. 1 to 6, and is fixed to the side wall portion 620 of the housing by the fixing bracket 30, and the other end 102 is connected to the connection pipe 63 and connected. The one end 101 rises along the depth direction L of the storage space 62.

  In the facility of FIG. 7, the one end 101 of the filter device 1 stands up along the depth direction L of the storage space 62, so that a clearance from the bottom portion 621 is secured and deposits accumulated in the mud reservoir 622 are filtered. The trouble that 1 is buried can be avoided. Therefore, it is not necessary to frequently remove the deposit so that the pipe opening of the connection pipe 63 is not buried in the deposit, and the maintenance cost can be reduced.

  The dust removal effect in the filter device 1 of FIG. 7 will be further described in detail with reference to FIGS. First, FIG. 8 shows a normal storage amount of rainwater 7 or the like in the storage space 62. Reference numeral 81 denotes dust or a layer thereof formed by dust flowing in along with rainwater or the like 7 or small dust having a low specific gravity floating near the water surface (upper layer portion). Reference numeral 82 is a small pointed garbage such as a dead branch, and reference numeral 83 is a large surface area garbage such as a fallen leaf or a plastic bag.

  In the state of FIG. 8, the second member 20 covers the through hole 112 according to the water surface position of the rainwater 7 or the like by the buoyancy of the buoyancy body 28. Here, a gap g is formed between the opposing surfaces of the outer surface 113 and the inner surface 262, and the gap g communicates with the outside through the opening 23. According to this configuration, rainwater or the like 7 stored in the storage space 62 is guided to the gap g through the opening 23, and then is guided from the gap g to the hollow portion 111 through the through hole 112, and further through the hollow portion 131. 63. Accordingly, the rainwater 7 can flow down to the connecting pipe 63.

  In the dust (81-83) included in the rainwater 7 or the like, the dust (81-83) larger than the gap g cannot pass through the opening 23 of the gap g and is caught by the opening 23. Further, the clogging prevention effect of the filter device 1 will be described for each type of dust. First, since the gap g of the filter device 1 communicates with the outside through the opening 23, the vicinity of the water surface where the dust 81 floats ( By disposing the opening 23 at a position deeper than the upper layer portion, it is possible to suck in rainwater 7 and the like below the middle layer portion without dust 81. Therefore, it is possible to protect the through hole 112 from the dust 81 and to avoid a problem that the through hole 112 is clogged.

  Moreover, since the gap g of the filter device 1 communicates with the outside through the opening 23, even if the dust 81 is likely to be sucked into the gap g together with the rainwater 7 or the like, the dust 81 passes through the gap g. It is caught in the opening part 23 before doing. Therefore, it is possible to protect the through hole 112 from the dust 81 and to avoid a problem that the through hole 112 is clogged.

  Secondly, since the gap g of the filter device 1 communicates with the outside through the opening 23, when the dust 82 is larger than the gap g, it is caught by the opening 23. Therefore, the problem of clogging caused by the dust 82 can be avoided.

  Third, since the gap g of the filter device 1 communicates with the outside through the opening 23, the dust 83 is caught by the opening 23. Therefore, it is possible to protect the through hole 112 from the dust 83 and to avoid a problem that the through hole 112 is clogged.

  On the other hand, since the filter of the prior art allows rainwater to flow out directly through the mesh-like mesh portion, dust 81 to 83 adheres to the mesh portion and causes clogging. If this clogging is left unattended, it will overflow, but if it is necessary to avoid problems as soon as possible, the filter will be removed and rainwater 7 will be sent to the rainwater storage and infiltration facility. Cannot be prevented. Moreover, since the filter of a prior art has a narrow surface area of a mesh part, it will be easily clogged when dust 81-83 adheres. If an attempt is made to increase the area of the filter surface in order to avoid this inconvenience, the ridge itself becomes larger, which is not economical.

  Next, FIG. 9 shows a state in which the storage amount of rainwater and the like 7 in the storage space 62 is increased, and the second member 20 floats according to the water surface position, so The hole 112 is exposed to the outside. In the state of FIG. 9, since rainwater etc. 7 flows directly into the first member 10 through the through hole 112 without passing through the gap g, the drainage efficiency of rainwater etc. 7 is improved. Thus, according to the structure which can adjust discharge | emission efficiency according to the water surface position in the storage space 62, an overflow can be avoided.

  Further, by appropriately adjusting the hole shape and hole diameter of the through hole 112, it is possible to catch the dust 81 to 83 contained in the rainwater or the like 7 in the storage space 62 at the opening end of the through hole 112. Accordingly, it is possible to avoid the problem that the dust 81 to 83 flows into the connection pipe 63.

  Moreover, since the position of the through hole 112 exposed to the outside when the buoyancy body 28 floats the second base portion 25 is deeper than the upper layer portion, the problem of clogging by the dust 81 does not occur.

  Since the dust 81 to 83 caught by the opening end of the through hole 112 is peeled off by the opening 23 by the vertical movement of the second member 20, clogging of the through hole 112 is avoided and The dust 81 to 83 is not left with the surroundings attached. Therefore, the maintenance cost can be reduced. As a means for avoiding clogging of the through hole 112, for example, by attaching a ring-shaped brush to the inner surface 262, dust 81 to 83 attached to the through hole 112 can be surely scraped off.

  FIG. 10 shows a state in which rainwater and the like 7 flowing into the storage space 62 has increased rapidly due to guerrilla heavy rain and the like, and all the through holes 112 are exposed to the outside. As the stop of raising the second member 20, a pre-installed grating (not shown) can be used. However, since the depth of the front is not constant, it is preferable to tie the first and second members 10 and 20 with a string or the like in advance according to the construction conditions.

  According to the embodiment of FIG. 10, rainwater or the like 7 flows into the first member 10 through the ceiling filter tool 29, so that the discharge efficiency is improved as compared with the states of FIGS. 8 and 9. Therefore, it is possible to avoid an overflow of the discharge facility in an emergency such as a heavy rain. Therefore, it is possible to provide a filter device 1 having excellent reliability and a discharge facility using the same.

  Further, the dust 81 to 83 can be captured by the mesh portion 290 by appropriately adjusting the mesh shape and the mesh interval of the mesh portion 290 of the ceiling filter tool 29. Accordingly, it is possible to avoid the problem that the dust 81 to 83 flows into the connection pipe 63.

  Further, the filter device 1 is configured such that the one end 101 rises along the depth direction L of the storage space 62, thereby checking the clogging of the mesh portion 290, and the dust 81 clogged in the mesh portion 290. The operation of removing 83 is easy. Therefore, the maintenance cost can be reduced.

  11 to 13 are partial cross-sectional views showing a facility according to still another embodiment of the present invention with a part thereof omitted. The facility in FIG. 11 is a street lamp for discharging rainwater to a rainwater pipe 66, and an L-shaped side groove 64 is placed on the top of the housing. The L-shaped side groove 64 is provided with a water passage hole 65 on the main surface. One end of the connecting pipe 63 is connected to the rainwater pipe 66.

  The facility shown in FIG. 12 is a water collecting device for discharging rainwater to the rainwater pipe 66, and a U-shaped side groove 67 is placed on the top of the housing.

  The facility shown in FIG. 13 is a water collector. One end of the discharge pipe 68 on the discharge side is connected to a river (or lake) 69. Also in the embodiment of FIGS. 11 to 13, the advantage of the filter device 1 described with reference to FIGS. 1 to 10 and the advantage of a facility using the same can be obtained.

  As described with reference to FIGS. 1 to 9, the filter device 1 appropriately captures the dusts 81 to 83 according to the flow rate of the liquid amount flowing into the storage space 62 and the water surface position, and adjusts the flow rate. There is a feature in that it can. Therefore, if the filter device 1 according to an embodiment of the present invention and a facility using the filter device have a storage space in which the liquid level fluctuates, the filter device 1 can be used as an underground structure as in the embodiment of FIGS. Not exclusively. For example, it can be used for various liquid storage tanks installed on the ground, lake sluice gates, outdoor baths, and the like.

  FIG. 14 is a cross-sectional view of a filter device according to another embodiment of the present invention. The filter device of FIG. 14 and the filter device of FIG. 2 have a common basic configuration except that the structure of the second member 20 is different. Hereinafter, the difference will be mainly described.

  The second member 20 constituting the filter device of FIG. 14 is integrally molded using expanded polystyrene (EPS), and the whole is a low-density material or specific gravity having buoyancy with respect to a liquid, specifically water. Made of small material. However, the second member 20 is not necessarily limited to the EPS as long as it has buoyancy with respect to the liquid. For example, in addition to foamed plastic other than EPS, wood can be used.

  Furthermore, the second member 20 of FIG. 14 has a side wall part 21, a hollow part 22, an opening part 23, and a bottom part 27. The side wall part 21 constitutes a bottomed cylindrical side wall part, and the bottom part 27 constitutes a bottomed cylindrical bottom wall part. The side wall portion 21 of FIG. 14 has a thickness dimension of about 2 to 4 times the thickness dimension of the bottom portion 27 from the viewpoint of securing buoyancy and securing impact resistance against external physical impact. Have.

  The side wall portion 21 has a maximum delivery inner diameter dimension D5 (inner dimension D5) as viewed from the inner surface 210. The hollow portion 22 is defined by the inner surface 210 of the side wall portion 21 and the inner surface of the bottom portion 27. The opening portion 23 opens to the opposite side of the bottom portion 27 at one end of the side wall portion 210 in the tube axis direction L and communicates with the hollow portion 22.

  The second member 20 constituting the filter device of FIG. 14 is attached to the outer surface 113 so as to be movable along the tube axis direction L, and in the attached state, all of the through holes 112 constituting the water flow region s are attached. It is covered so that it can be exposed. Further, the filter device of FIG. 14 has a gap g. The gap g is formed between the opposing surfaces of the outer surface 113 and the inner surface 210 according to the dimensional difference between the outer dimension D1 of the base 110 and the inner dimension D5 of the side wall 21, and communicates with the outside through the opening 23. doing.

  The filter device of FIG. 14 can also provide the advantages of the filter device 1 described with reference to FIGS. 1 to 13 and the facilities using the same. For example, since the gap g of the filter device communicates with the outside through the opening 23, it is assumed that dust (81 to 83) is likely to be sucked into the gap g together with rainwater 7 as shown in FIG. Also, the dust (81-83) is caught in the opening 23. Therefore, it is possible to protect the through hole 112 from dust (81 to 83) and to avoid a problem that the through hole 112 is clogged.

  Further, since the second member 20 is made of a material having buoyancy with respect to the liquid (7), it floats according to the position of the liquid in the storage space (62), and is shown in FIG. 9 or FIG. As described above, the through hole 112 is exposed to the outside, and the discharge efficiency can be automatically adjusted. Therefore, even when rainwater or the like (7) flowing into the storage space (62) suddenly increases due to guerrilla heavy rain or the like, problems such as overflow do not occur.

  Furthermore, since the second member 20 is made of a material having buoyancy with respect to the liquid (7), for example, it is not necessary to separately attach the buoyancy body 28 of FIG. Therefore, the number of parts can be reduced and the manufacturing cost can be reduced.

  FIG. 15 is a perspective view showing a part of a filter device according to still another embodiment of the present invention. The straight pipe portion 11 in FIG. 14 and the straight pipe portion 11 in FIG. 3 have a common basic configuration except that the shape of the opening edge of the through hole 112 is different. Hereinafter, the difference will be mainly described.

  In the straight pipe portion 11 of FIG. 15, each of the plurality of through holes 112 has a linear shape or a slit shape extending along the tube axis direction L, and extends along the long axis along the tube axis direction L and the circumferential direction. And a short axis.

  Even if the filter device is configured using the straight pipe portion 11 of FIG. 15, the advantages of the filter device 1 described with reference to FIGS. 1 to 14 and the advantages of a facility using the filter device 1 can be achieved. Furthermore, since the through-hole 112 which comprises the straight pipe part 11 of FIG. 15 has a short axis in the circumferential direction, as shown, for example in FIG. 9 or FIG. 10, even if the through-hole 112 is exposed, rainwater Etc. (7) can be properly captured at the open end of the through-hole 112. Therefore, there is no problem that dust (81-83) flows into the connecting pipe (63).

  Although the contents of the present invention have been specifically described above with reference to the preferred embodiments, it is obvious that those skilled in the art can take various modifications based on the basic technical idea and teachings of the present invention. It is.

DESCRIPTION OF SYMBOLS 1 Filter apparatus 10 1st member 101,102 One end, other end 110 1st base | substrate part 112 Through-hole 113 Outer surface 20 2nd member 25 Outer cylinder part 28 Buoyant body 62 Storage space 63 Connection pipe L Pipe axial direction D1 1st External dimension of member 1 D5 Internal dimension of second member

Claims (6)

A filter device used for removing dust in a liquid, comprising a first member and a second member,
The first member is tubular and has a through hole;
The through hole penetrates the tubular side wall portion in the thickness direction,
The second member has buoyancy with respect to the liquid, is tubular, has an opening at one end in the tube axis direction, and has an inner dimension larger than the outer dimension of the side wall portion constituting the first member. The outer surface of the side wall portion has a size, is movably attached along the tube axis direction of the first member, and covers the through-hole in the attached state.
Filter device. 2. The filter device according to claim 1, wherein the second member further includes a second base portion and a buoyancy body,
The second base portion is tubular, has an opening at one end in the tube axis direction, has an inner dimension larger than an outer dimension of the side wall portion constituting the first member, and On the outer surface, it is attached movably along the tube axis direction, and covers the through hole in the attached state,
The buoyancy body has buoyancy with respect to the liquid, and is attached to the second base portion.
Filter device. The filter device according to claim 1,
The second member is made of a material having buoyancy with respect to the liquid.
Filter device. The filter device according to any one of claims 1 to 3, further comprising a gap,
The gap is formed between the opposing surfaces of the first member and the second member according to a dimensional difference between the outer dimension and the inner dimension, and the opening of the second member Communicate with the outside through
Filter device. The filter device according to any one of claims 1 to 4,
The first member has a bent portion between one end and the other end in the tube axis direction.
Filter device. A facility including a storage space, a filter device, and a connecting pipe,
The storage space extends in the depth direction, stores liquid sent from the outside,
One end of the connection pipe is connected to the storage space,
The said filter apparatus is described in any one of Claim 1 thru | or 5, One end of a pipe-axis direction is connected to the said connection pipe, and the other end of a pipe-axis direction follows the depth direction of the said storage space. Standing up,
Facilities.

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