JP2751017B2 - Manhole made of PVC for public use using socket plug - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an indoor or public (hereinafter referred to as "public") PVC man-housing using a receptacle plug.
It is about a file.

[0002]

2. Description of the Related Art Generally, public sewers are often laid after an urban area is formed. In such a case, the miscellaneous drainage in the house, which had been drained into the conventional U-shaped gutter at the time of laying the public sewerage, was temporarily spilled to the newly installed public manhole so as not to hinder the immediate use. I have.

On the other hand, when a public sewer system is provided in advance (see, for example, Japanese Utility Model Publication No. 6-3903), the entire sewer system does not function unless a corresponding drainage system is installed in the house. Therefore, legal regulations have been made on the promotion of installation of drainage facilities on residential land.

[0004] In any case, plugs and caps are temporarily covered with the public manhole for the purpose of advanced pipe installation after the installation (hereinafter referred to as advanced pipe installation). It is being buried so that it can be excavated again. Therefore, even a sewage sewage made of public PVC is constructed into a sewage sewage using a multi-way fitting, and this is covered with a temporary plug, a receiving plug, for example, straight piping, right or left piping, It is buried so that various kinds of advanced pipes such as right or left merging pipe, left and right merging pipe, or three-way merging pipe can be laid.

[0005] By the way, as shown in Japanese Utility Model Laid-Open No. 59-107676 and Japanese Utility Model Laid-Open No. 53-90221, an inlet plug used for a PVC sewage basin is disclosed.
A head with a flange, a receptacle insertion part, and a tip surface having a smoothly continuous surface on the inner peripheral surface of the main body. The socket plug is pushed in and inserted. Therefore, no dead space or filth pool is formed at the front end face of the socket plug.

[0006] Thereafter, at the time of advanced pipe laying, the port plug is withdrawn from the inlet port. At this time, for example, the tip of a flat-blade screwdriver is inserted into the joint between the flanged head and the main body. When prying in, the receptacle plug can be easily removed.

[0007]

By the way, such a manhole or a sewage basin is placed at a predetermined excavated position, and a check tube is erected in accordance with the surface height of the manhole or sewage. In order to improve the reliability of pipe laying, when the check tube is bonded and bonded to the check tube hole during such work, Unlike conventional small-diameter masques, large amounts of adhesive liquid have tended to be applied to the slightly enlarged bore of the inspection cylinder mouth, so a specific part of the inspection cylinder mouth has been used. Adhesive liquid increases.

[0008] Therefore, the adhesive liquid dripping from the inspection port is dripped on the tip end face of the receiving plug of the lower inflow side receiving port, or penetrates into the receiving port insertion portion and solidifies. Therefore, after that, even if you try to extract this receiving plug for advanced pipe laying, it will not be possible to extract it, and it will not be possible for humans to construct a small-diameter inspection tube, and in the worst case,
The problem of causing redoing of pipe laying has come to occur.

[0009]

SUMMARY OF THE INVENTION The present invention has been made in order to solve such a problem, and the gist of the present invention is to provide a flanged head, a socket insertion portion, and a surface along an inner surface of a main body. Temporarily insert a receiving plug composed of a front end surface having the same and a seal ring wound around the outer periphery of the receiving port insertion portion into the inflow-side receiving port of the manhole, and remove the plug at the time of advanced pipe installation. Thus, in the PVC manhole having the check tube port, the outflow side connection portion, and the plurality of inflow side ports,
A public plug using a receptacle plug, characterized in that a small protruding piece for preventing the adhesive applied to the check cylinder receptacle from dripping is provided immediately below the above-mentioned inspection receptacle and directly above the inflow-side receptacle. Etc. in PVC manholes.

[0010]

BRIEF DESCRIPTION OF THE DRAWINGS The invention will be described in more detail with reference to an embodiment shown in the accompanying drawings. 1 is an exploded cross-sectional view of a first embodiment of the present invention, FIG. 2 is a plan view of a main part of FIG. 1, FIG. 3 is a cross-sectional view of a second embodiment,
FIG. 4 is a sectional view of the third embodiment.

In each of these embodiments, the diameter of the inspection cylinder port is 150 to 400 mmφ, and the injection ported small-diameter PVC porthole having three inlet ports and one outlet port. It is suitable for a manhole, and this small-diameter manhole is applied to advanced pipe laying using a receiving plug. Of course, the present invention can also be applied to a small-diameter manhole in which an outflow-side receiving port or a spout (connecting portion), which is said to be a drop, is provided downward.

In the first embodiment, as shown in FIGS. 1 and 2, the inspection cylinder port 2, the first, second and third inflow side ports 3, 4, and 5 are directed upward from the manhole body 1. Are provided sideways in three directions, and the outflow-side receiving ports 6 are provided sideways in the remaining directions.

And, for example, these inflow side receiving ports 3,
Push the receiving plug 7 into any one of 4 and 5, and insert it. The socket plug 7 is composed of a flanged head 8 having a driver-insertion gap 8a, a socket insertion section 9, and a tip end surface 10. The socket insertion section 9 has a rubber O-ring 11 for sealing. Is wound.

Therefore, in such a small-diameter manhole, if the receiving plugs 7 are inserted into the first and third inflow-side receiving ports 3 and 5, respectively, a provisional straight pipe manhole is formed. And the second inlet port 4 and the first
Alternatively, if a receiving plug 7 is inserted into one of the third inlet ports 3 and 5, respectively, a temporary right or left piping manhole is formed, and the first or third inlet port receptacle is formed. If the inlet plugs 7 are inserted into the ports 3 and 5, respectively, a temporary right or left merging pipe manhole is formed, and if the inlet plug 7 is inserted into the second inlet port 4, the provisional manhole is formed. Typical left
It is configured as a manhole for the right merging pipe.

Here, in this embodiment, the upper surface thereof is in contact with the stopper 2a of the inspection tube port 2, and the first
Arc-shaped drip-preventing small projections 12, 13, and 14 protrude directly above the second and third inflow-side receiving ports 3, 4, and 5, and extra adhesive applied to the inspection pipe receiving port 2. Avoid dripping of liquid,
Further, it is prevented from entering from the front end face 10 of the socket plug 7.

These arc-shaped hanging small projections 12, 1
Each of the moldings 3 and 14 is formed at the time of injection molding of the manhole body 1, and is formed to have a cross-sectional dimension of about 3 to 5 mm square.

Next, a second embodiment will be described. FIG.
, The upper surface is in contact with the stopper 2a of the inspection port 2 and the first, second and third inflow-side ports 3,
The small horizontal projections 15 and 16 (not shown in the third inflow-side receiving port 5) are separately provided and protruded from the outflow-side receiving ports 6 and 4, respectively. It is divided into places and protruded to prevent dripping of excess adhesive applied to the inspection port 2.

Next, a third embodiment will be described. FIG.
In FIG. 7, a horizontal hanging small protruding piece 17 is protruded over the entire inner circumference so that the upper surface is in contact with the stopper 2a of the inspection tube receptacle 2. In the case of the small projecting piece 17 for avoiding horizontal droop of the third embodiment, it is not necessary to integrally mold the small projecting piece 17 with the manhole body 1 but, for example, it may be fitted inside using an expandable ring. If so, it can be removed at the time of advanced pipe installation.

The operation of these embodiments is as described above. However, when the sewage merges into a full tube from a plurality of inlet ports at once, the sewage rises rapidly in the manhole and the sewage is deposited on the inner surface of the inspection cylinder. If there is a possibility of sticking, such small protruding pieces 12, 13, 14, 15, 16, 1 avoid the arc-shaped or horizontal droop.
7, a baffle member is formed, and a partial rise of sewage can be prevented. The small projection may be an eave-shaped small projection having a gutter.

Although the present embodiment has been described using a small-diameter manhole, the present invention is not limited to this, and can be applied to a slightly larger-diameter household sewage system. It is called a public PVC manhole.

[0021]

According to the present invention, since the small protruding piece is provided just below the inspection tube port and directly above the inflow-side port, the front end face of the provisionally inserted port plug is provided. In addition, the adhesive for connecting the check tube does not hang down, and it is not difficult to remove the plug at the time of advanced pipe installation. In particular, even if the amount of the adhesive liquid applied is increased, the inspection tube can be connected with a sense of security, and the small protruding piece also serves as a baffle member for preventing the contaminated water from rising in the inspection tube.

[Brief description of the drawings]

FIG. 1 is an exploded sectional view of a first embodiment of the present invention.

FIG. 2 is a plan view of a main part of FIG.

FIG. 3 is a sectional view of a second embodiment.

FIG. 4 is a sectional view of a third embodiment.

[Explanation of symbols]

1: Manhole body, 2: Inspection port, 3, 4, 5 ...
Inflow-side receptacle, 6 ... Outflow-side receptacle, 7 ... Receptacle plug, 8 ... Head with flange, 9 ... Receptacle insertion part, 10 ... Tip face, 11 ...
O-ring, 12,13,14,15,16,17… Small protruding piece to avoid dripping

Claims (1)

(57) [Claims] 1. A receiving plug comprising a flanged head, a receiving port insertion portion, a tip surface having a surface along the inner surface of the main body, and a seal ring wound around the outer periphery of the receiving port insertion portion. Inspection port, outflow-side connection, which was temporarily inserted into the inflow-side receptacle of the manhole and removed when the advanced pipe was laid.
And a PVC manhole having a plurality of inflow-side receiving ports, wherein the adhesive liquid applied to the checking-tube receiving port is prevented from dripping directly below the checking-tube receiving port and directly above the inflow-side receiving port. A manhole made of polyvinyl chloride for public use, etc. using a socket plug provided with a protruding piece.