JP2010222819A - Perforated block - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a perforated block which enables another object to be stably placed on an upside, or which enables the stacking of the plurality of perforated blocks. <P>SOLUTION: This perforated block 20 includes an internal space which is surrounded by an upper wall 21a equipped with a plurality of holes, a pair of sidewalls 21b connected to the upper wall 21a and a bottom wall 21c connected to the sidewall 21b, and which communicates with the hole. The perforated block 20 also includes: an upside fixing portion 26 which is provided near at least one of two sides of the upper wall 21a unconnected to the pair of sidewalls 21b, and which comprises a protrusion, a recess, a notch or a combination of two or more of them; and a downside fixing portion 27 which is provided near at least one of two sides of the bottom wall 21c unconnected to the pair of sidewalls 21b, and which is engaged with or fitted into the upside fixing portion 26 of the downside perforated block 20 when the perforated blocks are placed in a vertical direction. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention is a water treatment facility that removes objects to be removed such as suspensions contained in water to be treated such as clean water, industrial water, industrial water, domestic wastewater, and industrial wastewater. The present invention relates to a perforated block used in a water collecting device for collecting water.

  In the water collector, for example, a filtration layer (treatment layer) filled with a granular medium is supported to support a filtration means (removal means) for removing the suspension, and the suspension is removed through the filtration layer. A perforated block for collecting the treated water (for example, Patent Document 1).

  The perforated block is provided with an outer wall (upper wall / side wall / bottom wall) whose hollow cross section is substantially rectangular, and an inclined inner wall having a substantially inverted V-shaped cross section inside the outer wall. By this inclined inner wall, the internal space of the perforated block is partitioned into a central circulation part and side circulation parts located on both sides of the central circulation part. The upper part of the upper wall and the side circulation part, and the side circulation part and the central circulation part communicate with each other through a hole.

  The filtration layer is filled with granular media such as gravel, silica sand, anthracite, and granular activated carbon. If the treated water is passed through the filtration layer in a downward flow from above the filtration means, it is contained in the treated water. Suspension is removed by the filtration layer. The treated water from which the suspended solids have been removed by passing through the filtration layer flows into the side circulation part through the upper wall hole provided in the upper wall of the perforated block by the action of gravity, and further, the side circulation part The water is collected by flowing into the central circulation section from.

Patent Documents 2 and 3 describe a porous member placed on a perforated block. The porous member is a porous plate-like member having pores dimensioned to support the filtration layer without allowing particulate media to pass through. Thereby, even if it is a case where the diameter of the hole provided in the upper wall of the perforated block is set large, it can prevent that a granular medium penetrate | invades into the internal space of a perforated block from the said hole.
In the porous members of Patent Documents 2 and 3, positioning is performed by fitting the edges of the two long sides into stepped portions formed on a pair of ribs standing along the long side direction of the upper wall.

JP 2004-346574 A Japanese Examined Patent Publication No. 6-61411 Japanese Patent No. 3053870

  By fitting the porous member into the stepped portion, the porous member can be positioned so as not to be displaced in the short side direction. However, since the rib standing up along the short side direction of the upper wall is not positioned in the long side direction, there is a possibility that the rib is displaced along the long side direction.

  Moreover, when storing a perforated block, a some perforated block may be laminated | stacked on an up-down direction. At this time, the bottom wall of the upper perforated block is usually brought into contact with the step formed on the upper surface of the pair of ribs on the upper wall of the lower perforated block. Since the upper surface width of the stepped portion is narrow, the upper perforated block laminated by vibration or the like is displaced along the short side direction, and the edge of the bottom wall falls from the upper surface of the stepped portion and the perforated The block may tilt. If such an inclination occurs over a plurality of laminated perforated blocks, the laminated perforated blocks may fall down, which is dangerous.

  Accordingly, an object of the present invention is to provide a perforated block in which another object can be stably placed on the upper side or a plurality of perforated blocks can be stacked.

  The perforated block according to the present invention for achieving the above object is surrounded by an upper wall having a plurality of holes, a pair of side walls connected to the upper wall, and a bottom wall connected to the side wall, In the perforated block having an internal space communicating with the hole, provided in the vicinity of at least one of the two sides of the upper wall not connected to the pair of side walls, a convex part, a concave part, a notch part, or two or more thereof The upper fixed portion made of a combination of the above and the bottom wall not connected to the pair of side walls are provided in the vicinity of at least one side, and when the perforated blocks are placed vertically, the lower side It has the point which has the lower side fixing | fixed part engaged or fitted with the said upper side fixing | fixed part of a perforated block.

In the perforated block, a plurality of perforated blocks may be stacked in the vertical direction during storage. Moreover, a porous member may be placed on the upper surface of the perforated block during construction of the water collecting device. Other objects placed on the upper surface of the perforated block serving as a reference are referred to as “upper other objects”, and other objects located below the perforated blocks are referred to as “lower other objects”.
In this configuration, when the upper object is a perforated block, the lower fixing portion in the upper perforated block and the upper fixing portion in the lower perforated block are arranged at positions where they can be engaged or fitted. Therefore, when a plurality of perforated blocks are stacked during storage, the lower fixing portion in the upper perforated block and the upper fixing portion in the lower perforated block are reliably engaged or fitted. Thereby, it is possible to stack straightly in the vertical direction in a state where the upper perforated block is reliably positioned with respect to the lower perforated block.
In addition, the upper fixed portion and the lower fixed portion are engaged or fitted to prevent or limit the movement of the upper perforated block on the upper wall surface of the lower perforated block. The direction of the side where the laminated upper perforated block does not connect to the pair of side walls of the upper wall (hereinafter referred to as “short side direction”) and the direction of the side connected to the pair of side walls (Hereinafter referred to as “long side direction”), it becomes difficult to shift the position, and the stacking posture is stabilized.

  Further, in this configuration, when the other upper member is a porous member, the porous member can be engaged with or fitted to the upper fixing portion so that the porous member is securely positioned with respect to the perforated block. can do. Therefore, it becomes difficult to shift in the short side direction and the long side direction of the upper wall.

  As described above, the perforated block of the present invention can be placed on the upper surface in a state where different upper objects are reliably positioned by the common member (upper fixing part).

  According to the second characteristic configuration of the perforated block according to the present invention, the bottom wall holds the horizontal direction with the upper wall in the lower perforated block when the perforated blocks are placed in the vertical direction. It is in the point provided with the contact wall part which touches, and the inclination wall part connected to the said side wall by the upward inclination from the said contact wall part.

  According to this configuration, when a plurality of perforated blocks are stacked, the abutting wall portion can abut against the upper wall of the lower perforated block while maintaining the horizontal direction. Posture is stable. In addition, since the inclined wall portion connected to the side wall with the upward inclination from the abutting wall portion does not abut against the upper wall, it can be laminated so as not to interfere with the upper wall of the lower perforated block. Work becomes easier.

It is a perspective view which shows the outline of a water collecting apparatus by a part notch. It is a perspective view of the perforated block of the present invention. It is a perspective view in case an upper other thing is another perforated block. It is a perspective view in case an upper other thing is a porous member. It is a cross-sectional schematic when a perforated block is laminated | stacked.

Embodiments of the present invention will be described below with reference to the drawings.
The perforated block of the present invention is an object to be removed in a water treatment facility Y that removes an object to be removed such as a suspension contained in water to be treated such as clean water, industrial water, industrial water, domestic wastewater, and industrial wastewater. Is used in a water collecting apparatus X that collects treated water from which water has been removed (FIG. 1).

As shown in FIGS. 1 to 5, the perforated block 20 passes the treated water in a downward flow from above the treated layer 11 filled with the granular medium 12 and removes the object to be removed contained in the treated water. The outer periphery is surrounded by an upper wall 21a for supporting the removing means 10 to be removed by the treatment layer 11 via the porous member 60, a pair of side walls 21b connected to the upper wall 21a, and a bottom wall 21c connected to the side wall 21b. The treated water, which is formed in a cylindrical shape having a substantially rectangular cross-sectional view and passes through the treatment layer 11 and from which the object to be removed is removed, is collected in a hollow internal space.
The perforated block 20 is provided in the vicinity of at least one of the two sides of the upper wall 21a that is not connected to the pair of side walls 21b, and includes an upper fixing portion 26 that includes a convex portion, a concave portion, a notch portion, or a combination of two or more thereof. And the upper fixed portion of the lower perforated block when the perforated blocks are placed in the vertical direction, provided near at least one of the two sides of the bottom wall 21c not connected to the pair of side walls 21b. 26, and a lower fixing portion 27 that engages or fits with 26.

(Removal means)
The removal means 10 in this embodiment is demonstrated as what removes the to-be-removed object contained in to-be-processed water by a filtration process. Therefore, the treatment layer 11 becomes a filtration layer. However, the present invention is not limited to such an embodiment, and it is possible to remove the object to be removed contained in the water to be treated by biological treatment. In this case, the treatment layer 11 becomes a biological treatment layer, and for example, the surface of the granular medium 12 is loaded with microorganisms that biologically decompose the object to be removed.

  The treatment layer 11 is filled with a granular medium 12 such as silica sand and anthracite. In the present embodiment, two treatment layers 11 are provided, and a silica sand layer 11a and an anthracite layer 11b are arranged in order from the lowest layer. Of course, the configuration of the processing layer 11 is not limited to this, and other configurations may be used.

  By supplying the treated water from the drainage trough 50 provided above the removing means 10 to the treated layer 11 configured as described above and passing the treated layer 11, the object to be removed contained in the treated water is removed. It is removed by the treatment layer 11. In some cases, the treated water is supplied directly rather than via the drainage trough 50.

(Perforated block)
The perforated block 20 is disposed below the removing means 10 and supports the removing means 10. A porous member 60 is disposed between the removing means 10 and the perforated block 20.

  The perforated block 20 is provided with outer walls 21 (an upper wall 21a, a side wall 21b, and a bottom wall 21c) that are hollow and have a substantially rectangular cross section. The bottom wall 21c includes an abutting wall 21c1 that abuts the upper wall 21a of the lower perforated block while maintaining the horizontal direction when the perforated blocks are placed in the vertical direction, and the abutting wall 21c1. And an inclined wall portion 21c2 connected to the side wall 21b with an upward inclination. The inner space of the perforated block 20 is provided with an inclined inner wall 22 that is connected to the inside of the outer wall 21 and divides the inner space of the perforated block 20 into a plurality of spaces.

  The perforated block 20 may be formed of any material as long as the material has excellent corrosion resistance and pressure resistance. For example, if it is molded by foam molding of high-density polyethylene, the weight can be reduced. Therefore, workability is good in terms of transportation and construction, which is preferable.

  The upper wall 21 a directly contacts the lower surface of the removing unit 10 or indirectly supports the removing unit 10 through the perforated plate 60. The side wall 21b is a pair of opposing walls connected to the upper wall 21a, and the bottom wall 21c is connected to the pair of side walls 21b. Further, the inclined inner wall 22 is formed so that the cross section thereof is substantially inverted V-shaped. Thereby, the internal space of the perforated block 20 is partitioned into a central circulation part A and side circulation parts B located on both sides of the central circulation part A. Thus, although the internal space of the perforated block 20 is divided into three spaces by the inclined inner wall 22, it is not limited to this mode.

  The upper part of the upper wall 21a and the side circulation part B communicate with each other via a plurality of upper wall hole parts a1 formed in the upper wall 21a. Further, the side circulation part B and the central circulation part A communicate with each other via a first inner wall hole part b1, a second inner wall hole part b2 and a third inner wall hole part b3 formed in the inclined inner wall 22. The treated water from which the object to be removed has passed through the treatment layer 11 passes through the perforated plate 60 due to the action of gravity, and then flows down to the side circulation part B through the upper wall hole part a1, and further to the first. Water flows down to the central flow section A through the inner wall hole b1, the second inner wall hole b2, and the third inner wall hole b3 and is collected. The treated water flows down the flume 70 provided below the perforated block 20 through a bottom wall opening (not shown) formed on the bottom wall 21C of the perforated block 20, or is connected to the central circulation portion A. A pipe (not shown) is flowed down and conveyed to a predetermined water tank.

On the upper surface of the upper wall 21a, an upper wall first rib portion 23a extending from the side wall 21b, an upper wall second rib portion 23b parallel to the upper wall first rib portion 23a, and an upper wall first rib portion 23a An upper wall third rib portion 23c that intersects perpendicularly is provided. In the present embodiment, the case where two upper wall first rib portions 23a, one upper wall second rib portion 23b, and ten upper wall third rib portions 23c are formed is shown, but the present invention is not limited thereto. It is not a thing.
By these rib portions 23a to 23c, the upper surface of the upper wall 21a is divided into a plurality of sections. By providing these rib portions 23a to 23c, the pressure resistance of the upper wall 21a can be strengthened, and the bending of the upper wall 21a due to the load of the removing means 10 can be prevented.

  The upper wall first rib portion 23a is provided with a step portion 25 on the upper surface thereof in the long side direction. In this embodiment, although the case where the step part 25 is provided with two or more intermittently is shown, you may provide the one step part 25 over a long side direction. The step portions 25 are respectively provided on the two upper wall first rib portions 23 a facing each other, and the porous member 60 is fitted between the step portions 25 facing each other. Thereby, the porous member 60 can be positioned so as not to be displaced in the short side direction of the upper wall 21a.

  Side ribs 24 for reinforcing the side wall 21b are formed on the side wall 21b. The side ribs 24 may be horizontal side ribs 24A extending in the horizontal direction and vertical side ribs 24B extending in the vertical direction.

On the short side of the upper wall 21a, there is provided an upper fixing portion 26 that engages with the upper object T1 (FIG. 3). The shape of the upper fixing portion 26 is exemplified by a convex rib, but is not limited thereto, and may be a concave depression or notch, or a combination of two or more thereof.
On the short side of the bottom wall 21c, a lower fixing portion 27 that engages or fits with the lower other object T2 is provided. The lower fixing portion 27 is formed on the bottom wall 21c corresponding to the short side of the upper wall 21a on which the upper fixing portion 26 is provided. The shape of the lower fixing portion 27 exemplifies a concave portion, but is not limited thereto, and may be a shape that engages or fits with the upper fixing portion 26. For example, when the upper fixing portion 26 is concave, the lower fixing portion 27 can be a convex rib.
In the present invention, the upper fixing portion 26 is provided in the vicinity of the short side, and the term “near” refers to the short side and its periphery. The same applies to the lower fixing portion 27.
In this embodiment, although the upper side fixing | fixed part 26 and the lower side fixing | fixed part 27 show the case where it provided for only one side among the short sides of the upper wall 21a, you may provide for two sides. Moreover, in this embodiment, although the upper side fixing | fixed part 26 and the lower side fixing | fixed part 27 are each provided in one place, you may provide in multiple places in one side.

The perforated block 20 may stack a plurality of perforated blocks in the vertical direction during storage. Further, the porous member 60 is placed on the upper surface of the perforated block 20 when the water collecting device X is constructed. In this specification, the other object placed on the upper surface of the perforated block 20 serving as a reference is referred to as “upper other object T1”. The upper other object T1 is not limited to the other perforated block 20 or the porous member 60.
On the other hand, when a plurality of perforated blocks are stacked, another object positioned below the perforated block 20 serving as a reference is referred to as “lower other object T2”. The lower other object T2 is not limited to the perforated block 20.

  When the upper other object T1 is another perforated block 20 ′, the lower fixing portion 27 in the upper perforated block 20 ′ and the upper fixing portion 26 in the lower perforated block 20 can be engaged with each other. It is arranged (FIG. 3).

In the present embodiment, the upper fixing portion 26 and the lower fixing portion 27 are disposed at the center position in the width direction of the short side. When a plurality of perforated blocks 20 are stacked during storage in this mode, the lower fixing portion 27 in the upper perforated block 20 ′ and the upper fixing portion 26 in the lower perforated block 20 are reduced in the width of the short side. Engage in a central position in the direction. As a result, the upper perforated block 20 ′ can be straightly stacked in the vertical direction in a state where the upper perforated block 20 ′ is reliably positioned with respect to the lower perforated block 20.
If the lower fixing portion 27 (concave portion) in the upper perforated block 20 ′ and the upper fixing portion 26 (convex rib) in the lower perforated block 20 are engaged, the lower perforated block 20 Since the movement in the short side direction on the upper wall 21a surface can be prevented and the movement in the long side direction can be restricted, the positional deviation of the upper perforated block 20 ′ can be restricted.

  With regard to the arrangement positions of the upper fixing part 26 and the lower fixing part 27, for example, when the upper fixing part 26 is arranged at a position shifted by a predetermined distance from the central position, the lower fixing part 27 is similarly arranged at the central position. If it is disposed at a position shifted by a predetermined distance, a plurality of perforated blocks can be stacked straight in the vertical direction.

When the upper object T1 is the porous member 60, the upper fixing portion 26 is engaged with the porous member 60 (FIG. 4).
At this time, the upper fixing portion 26 engages with the porous member engaging portion 61 provided on the porous member 60 side at the center position in the width direction of the short side. Therefore, since the porous member 60 can be disposed in a state in which the porous member 60 is reliably positioned with respect to the perforated block 20, the porous member 60 can be prevented from moving in the short side direction on the surface of the upper wall 21a. Since the movement in the direction can be restricted, it is difficult to shift the position.

  Thus, the perforated block 20 of the present invention has different upper other objects T1 (the other perforated block 20 ′ and the porous member 60) in a state where the common member (upper fixing portion 26) is securely positioned. It can be placed on the top surface.

In the present embodiment, the porous member 60 is more reliably positioned by the three members of the step portion 25 and the upper fixing portion 26 facing each other.
Furthermore, in the present embodiment, the bottom wall 21c includes a contact wall portion 21c1 and an inclined wall portion 21c2. When the plurality of perforated blocks 20 are stacked, the abutting wall portion 21c1 abuts on the upper wall second rib portion 23b and the upper wall third rib portion 23c of the upper wall 21a in the lower perforated block 20. The horizontal direction can be maintained, and the posture of the upper perforated block 20 ′ is stabilized. Further, since the inclined wall portion 21c2 connected to the side wall 21b with an upward inclination from the abutting wall portion 21c1 does not contact the upper wall 21a, it interferes with the step portion 25 of the upper wall 21a of the lower perforated block 20 It is possible to perform lamination so that the laminating work can be easily performed.
In the present embodiment, the upper perforated block 20 ′ has a lattice line shape in which the contact wall portion 21c1 of the bottom wall 21c in the upper perforated block 20 ′ and the upper wall 21a of the lower perforated block 20 are in a lattice line shape. The posture of the perforated block 20 ′ is stabilized. However, the contact mode is not limited to this, and may be any shape that can stabilize the posture, for example, a planar shape or a plurality of dot shapes.

(Porous member)
The porous member 60 is a plate-like member having holes dimensioned to support the filtration layer 11 without allowing the granular medium 12 to pass through.
The porous member 60 may be placed on the upper surface of the rib portions 23a to 23c, or may be disposed in each section. The porous member 60 is fixed to the rib portions 23a to 23c or the upper wall 21a by tapping screws. For example, the porous member 60 may be configured by joining a large number of beads having a diameter of several mm. As the beads, ceramics, sintered metals, etc. can be used in addition to plastics such as polyolefin.

[Another embodiment]
In the above-described embodiment, the case where the upper wall first rib portion 23a is provided with the step portion 25 on the upper surface thereof in the long side direction has been described. The step portion 25 can be positioned so that the porous member 60 is not displaced in the short side direction of the upper wall 21a. However, if the lower fixing portion 27 (concave portion) in the upper perforated block 20 ′ and the upper fixing portion 26 (convex rib) in the lower perforated block 20 are engaged, the short side of the upper wall 21a Since the position shift to the direction and the long side direction can be prevented, the step portion 25 may be omitted.

  The present invention is a water treatment facility that removes objects to be removed such as suspensions contained in water to be treated such as clean water, industrial water, industrial water, domestic wastewater, and industrial wastewater. It can be used for perforated blocks used in water collecting devices that collect water.

20 (20 ') Perforated block 21a Upper wall 21b Side wall 21c Bottom wall 21c1 Abutting wall portion 21c2 Inclined wall portion 26 Upper fixing portion 27 Lower fixing portion a1 Upper wall hole portion

Claims (2)

In a perforated block having an inner wall that is surrounded by an upper wall provided with a plurality of holes, a pair of side walls connected to the upper wall, and a bottom wall connected to the side walls, and communicated with the holes,
An upper fixing portion that is provided in the vicinity of at least one of the two sides of the upper wall not connected to the pair of side walls, and includes a convex portion, a concave portion, a notch portion, or a combination of two or more thereof; and the pair of side walls. Provided in the vicinity of at least one of the two sides of the bottom wall that are not connected, and when the perforated blocks are placed in the vertical direction, engage or fit with the upper fixing portion of the lower perforated block A perforated block having a lower fixing portion.   When the bottom wall is placed between the perforated blocks in the vertical direction, a contact wall portion that contacts the upper wall of the lower perforated block while maintaining a horizontal direction, and upward from the contact wall portion The perforated block according to claim 1, further comprising an inclined wall portion connected to the side wall at an inclination of 5 mm.

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