JP3027218U - Filter for drain pipe - Google Patents

Abstract

(57) 【Abstract】 PROBLEM TO BE SOLVED: To provide a filter for a drainage pipe, which is capable of securely fixing and attaching a filter to a drainage pipe, and the mounting work thereof is also easy, and which has a high water collecting effect. To do. A tubular part (12) is attached to a drainage pipe (17) that penetrates a wall body (16) of an earth retaining wall such as a retaining wall or a masonry wall, and is formed in a tubular shape so as to be fitted into the end of the drainage pipe.
And a flange portion 13 formed to extend radially outward from the outer peripheral portion of one end of the tubular portion, and in contact with the end portion of the drainage pipe and the inner wall surface of the wall body to be locked in the installed state,
On the outer peripheral surface of the tubular portion, the dimension adjusting portion 15 is formed in the shape of a fin and has a flexibility and projects outward in the radial direction, and an inner peripheral portion of the tubular portion that is axially separated from the flange portion. The filter medium 2 that is fitted into the formed mesh portion 14 and the tubular portion, is supported on the surfaces of the mesh portion and the flange portion, and has water permeability and water collection property.
1, 22 and.

Description

[Detailed description of the device]

[0001]

[Technical field to which the device belongs]

 The present invention relates to a filter that is attached to a drainage pipe such as a retaining wall or a masonry wall to prevent sediment, gravel, dust, etc. from flowing out into the pipe.

[0002]

[Prior art]

 Generally, earth retaining walls such as retaining walls and masonry walls are buried with pipes that penetrate through the walls so that water absorbed in the earth and sand can be extracted. A filter is attached to the end of the pipe located inside the wall to prevent dirt, gravel, dust, etc. from flowing into the drain pipe along with water and closing the pipe. ing. Conventionally, a mesh-like or fibrous filter medium is used as a filter so that it is directly applied to the entrance of the drainage pipe, and it is backfilled with earth and sand as it is or by nailing. . Therefore, during the backfilling, the filter medium may be displaced from the predetermined position or may come off, so that the intended purpose may not be achieved.

As a filter for a water draining pipe which solves the above-mentioned inconvenience, a device by the applicant of the present invention disclosed in Japanese Utility Model Publication No. Sho 63-22197 is known. The water drain pipe filter of the present invention had a structure as shown in FIGS. 4 and 5. In these drawings, 1 is a drain pipe filter, 2 is a tubular portion, 3 is a flange portion, 4 is a mesh filter portion, and 5 is a fin-shaped dimension adjusting portion. As shown in FIG. 5, this drainage pipe filter 1 is used by being fitted into the end portion of the drainage pipe 7 provided in the retaining wall 6 on the side to be backfilled, and as it is, it fully functions. However, the ability to actively collect the water contained in the sediment 8 is further desired.

[0004]

[Problems to be solved by the device]

 The present invention provides an improved product of the above-mentioned conventional filter for draining pipe, which further has an improved water collecting capacity.

[0005]

[Means for Solving the Problems]

 The drainage pipe filter according to the present invention is attached to a drainage pipe that penetrates a wall of an earth retaining wall such as a retaining wall or a masonry wall, and is formed into a tubular shape so as to be fitted into the end of the drainage pipe. And a tubular portion formed to extend radially outward from the outer peripheral portion of one end of the tubular portion, and in contact with the end portion of the drainage pipe and the inner wall surface of the wall body in the installed state. A flange portion to be locked, a dimension adjusting portion that projects outward in the radial direction and has a flexible fin-like shape on the outer peripheral surface of the tubular portion, and an axial direction from the flange portion. And a mesh portion that is formed on the inner peripheral portion of the tubular portion and is fitted into the tubular portion and is supported on the surfaces of the mesh portion and the flange portion, and has a water permeability and a water collecting property. It has and.

[0006]

[Embodiment of device]

 FIG. 1 is an exploded perspective view showing a schematic structure of a filter for a water draining pipe according to the present invention, and FIG. 2 is a side view of the assembled state. As well shown in these drawings, the drain pipe filter 11 of the present invention has a cylindrical tubular portion 12. At one end of the tubular portion 12, a flange portion 13 is formed that extends radially outward from the outer peripheral portion and surrounds the outer peripheral portion in the circumferential direction. A mesh portion 14 is formed inside the tubular portion 12 at the other end thereof. The mesh portion 14 functions not only as a filter but also as a receiving portion for the water-permeable mat described below. The inside of the tubular portion 12 has a dish-like or vessel-like body with the net-like portion 14 at the bottom, and two disc-shaped mats in which fibers are randomly entangled in the water-permeable mat 21, 22 is stored. One of the two water-permeable mats 21 and 22 is made substantially equal to the inner diameter of the tubular portion 12, and the other is made substantially equal to the outer diameter of the flange portion 13. The two water-permeable mats 21 and 22 are assembled at the center by plastic assembly screws (male screw 23 and female screw 24), which may be, for example, stitching, or Another equivalent method may be used. The thickness of the water permeable mat 22 on the small diameter side is made substantially equal to the depth of the tubular portion 12 to improve the assemblability, and the water permeable mat 22 on the small diameter side fits inside the tubular portion 12, The large-diameter water-permeable mat 21 covers almost the entire flange portion 13. The water-permeable mats 21 and 22 absorb water contained in the backfilled earth and sand, and have excellent water collecting properties. In order to enhance this water collecting effect, various water permeable materials can be selected, and it is conceivable that a non-woven mat made of plastic bristles and a plurality of plastic nets are laminated. Further, on the outer peripheral surface of the tubular portion 12, a fin-shaped dimension adjusting portion 15 projects radially outward along the axial direction. The tubular portion 12, the flange portion 13, the net portion 14, and the dimension adjusting portion 15 are integrally molded by injection molding of a synthetic resin material such as low density polyethylene which has rigidity and is relatively elastic. ing.

As shown in FIG. 3, the filter 11 is attached to an end portion of a drainage pipe 17 penetrating a wall body 16 such as a retaining wall, the side facing the backfill earth / sand 18 side. The cylindrical portion 12 is fitted and fixed in the end portion of the water draining pipe 17 such that the outer peripheral surface thereof engages with the inner peripheral surface of the water draining pipe 17. Further, the flange portion 13 abuts on the end portion of the drainage pipe 17 and the inner wall surface of the retaining wall, so that the tubular portion fitted in the pipe further enters the pipe, or It is prevented from slipping off from the end (outlet side), and the fitting state of the tubular portion 12 to the pipe 17 is fixed. More specifically, the tubular portion 12 is inserted into the pipe 17 with the mesh portion 14 side first, and is pushed until the flange portion 13 comes into contact with the end portion of the pipe 17 and the inner wall surface of the wall body 16. Mating. The outer diameter of the tubular portion 12 is slightly smaller than the inner diameter of the pipe 17 in consideration of the dimensional error of the drainage pipe 17 and the deformation at the time of embedding, but the dimensional adjustment portion 15 is elastically deformed and The shaped portion 12 is securely fixed in the pipe 17. The net-like portion 14 and the water-permeable mats 21 and 22 formed in the tubular portion 12 have a filtering function and allow the moisture in the sediment to pass through and allow the water to flow into the drainage pipe. Prevents dust from flowing into the pipe. In particular, since the water permeable mat 21 is fixed to the mouth of the drain pipe 17 to increase the water collecting area, a large water collecting effect can be expected. In order to further enhance the water collecting effect, it is possible to make the diameter of the large-diameter water-permeable mat 21 larger than the outer diameter of the flange portion 13 or the thickness thereof.

[0008]

[Effect of device]

 In the filter for a drainage pipe according to the present invention, the filter can be securely fixed and attached to the drainage pipe, and the attachment work is simple, and a high water collecting effect can be obtained.

[Brief description of drawings]

1 is an exploded perspective view showing a schematic configuration of a filter for a water draining pipe according to the present invention.

FIG. 2 is a side view showing an assembled state of the water drain pipe filter of FIG.

FIG. 3 is a cross-sectional view showing an installed state of a filter for a water draining pipe according to the present invention.

FIG. 4 is a perspective view showing a schematic configuration of a drain pipe filter according to a conventional technique.

5 is a side view of the water removing pipe filter of FIG. 4. FIG.

FIG. 6 is a cross-sectional view showing an installed state of a water drain pipe filter according to a conventional technique.

[Explanation of symbols]

 11 Filter for Draining Pipe 12 Cylindrical Part 13 Flange Part 14 Netting Part 15 Dimension Adjusting Part 16 Retaining Wall 17 Draining Pipe 18 Backfilling Sediment 21 Water-permeable Mat 22 Water-permeable Mat 23 Male Thread 24 Female Thread

Claims (1)

[Scope of utility model registration request] 1. A wall body (1) of an earth retaining wall such as a retaining wall or a masonry wall.
6) which is attached to the drainage pipe (17) penetrating the drainage pipe (6) and is formed into a tubular shape so as to be fitted into the end of the drainage pipe (17); and the tubular part (12). ) Is formed so as to extend radially outward from the outer peripheral portion of one end of (1) and is abutted and locked to the end portion of the drainage pipe (17) and the inner wall surface of the wall body (16) in the installed state. The portion (13) and the outer peripheral surface of the tubular portion (12) have a dimension adjusting portion (1) protruding outward in the radial direction and having flexibility and formed in a fin shape.
5), a mesh portion (14) formed on the inner peripheral portion of the tubular portion (12) axially away from the flange portion (13), and fitted into the tubular portion (12). , The mesh portion (14)
And a filter material (21, 22) supported on the surface of the flange portion (13) and having water permeability and water collecting property.