JPH0412144Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a so-called simple type pipe joint type pipe made of FPR (reinforced plastic).

[Conventional technology and its problems]

In general, basins called sewage basins or rainwater basins are installed in residential areas, factory areas, near the boundaries between roads and private land, or at the boundaries of roads where there is a pedestrian/vehicle road division. . In cases where various types of loads are applied from the ground, such as on roads and private land, ready-made concrete circular or square boxes are widely used in order to have the strength to withstand the loads.

However, in the case of such concrete pipes, it takes time and effort to connect them to a residential property discharge pipe made of hard vinyl chloride (hereinafter referred to as PVC) during pipe cleaning work, and the pipe itself is heavy, making construction difficult.

On the other hand, as seen in Japanese Utility Model Application Publication No. 59-29491, simple small-diameter PVC basins have come to be used as sewage basins installed in residential areas because they do not require much strength. .

Therefore, it is conceivable to expand the diameter of such a simple basin and install it near the boundary between the road and private land, but in such a case, unless the wall thickness of the basin itself is made considerably large, there will be no interference from the road surface. Since the strength to withstand the load cannot be obtained, and the diameter is expanded, the expensive mold becomes larger, and the molding machine also becomes larger. This results in a rise in production costs. In particular, the concrete basin has the advantage of productivity as it can be easily adapted to various sizes, which means that it is possible to produce a wide variety of products. The simple type of box has no choice but to be mass-produced in a uniform manner, and cannot compete with the concrete box.

Furthermore, large-diameter (for example, 300 mmφ) foamed polypropylene resin basins are known (for example,
Publication No. 57-26488, Publication of Utility Model Application No. 57-160384, Publication No. 59876 of Utility Model Publication, Publication No. 39012 of Utility Model Publication No. 1987,
(Refer to Utility Model Publication No. 62-9422).

However, since polypropylene resin inherently becomes brittle at low temperatures (-5° C.), it is difficult to use it as a substitute for concrete trenches even though it can be used for residential trenches. Moreover, when long cleaning port pipes are connected in a cold region, if a road load is applied to the manhole cover side, a large force will be applied to the joint of the main body of the basin to which the cleaning port pipes are connected, impairing reliability in terms of strength. becomes. Of course, since the molding is done in a mold, the production cost is also high.

[Means for solving problems]

Therefore, the purpose of the present invention was to devise a simple synthetic resin cage to replace the concrete one.
In a simple synthetic resin basin, in which an upstream joint and a downstream joint are opened on a plane, and an upward cleaning port pipe joint is opened between these joints, the upstream joint is connected to a rubber ring. The downstream joint part is an insertion port into which an adhesive socket collar made of PVC that is integrated when molding the main body of the box is fitted, and the joint part of the cleaning port pipe is made of a PVC adhesive socket collar that is integrated when the main body of the box is molded. This is a simple type box with a socket or a rubber ring socket fitted with an adhesive socket collar made of aluminum, and the main body of the box is molded from FRP.

〔Example〕

The structure and operation of the present invention will be explained in detail with reference to embodiments shown in the accompanying drawings.

Fig. 1 shows an embodiment of the present invention, a partial cross-sectional side view (cross section A to A in Fig. 3), and Fig. 2 shows an example from B to B in Fig. 1.
A sectional view, FIG. 3 shows a 1-part sectional view taken in the direction of arrow C in FIG. 1.

Therefore, in these figures, the present example is a so-called simple type basin to which a PVC wastewater pipe with a diameter of 200 mmφ can be connected, and can be buried near the boundary between a road and private land. It is made by In addition, when the sewer pipe is 150mmφ, the cleaning port pipe is 200mmφ, and when it is 200mmφ, it is 250mmφ.
Each diameter is preferably 300 mmφ.

Needless to say, FRP molding methods include adding reinforcing agents such as glass fiber, glass cloth, and glass fiber powder to liquid resin such as polyester resin, epoxy resin, and diallyl phthalate resin and molding at low pressure; A method called the hand lay-up method is known, in which glass mat or glass cloth is layered on top of a mold and then impregnated with resin to form the mold.

By the way, the above-mentioned hand lay-up method is used to form the simple mold of this embodiment. Therefore, compared to simple PVC molds that are formed using expensive molds, extremely inexpensive wooden molds can be used, and the production of various types of simple molds can be comparable to the production of ready-made concrete molds. . Moreover, since it is made of FRP,
Its strength is approximately 10 times that of PVC in terms of specific tensile strength, and its specific gravity is light at 1.7.

Now, since the simple type FRP basin shown in the figure is a cheese type, the upstream side joint part 2, the downstream side joint part 3, and the branch pipe joint part 4 are opened in the square body 1 on a plane. Furthermore, an upward cleaning port pipe joint 5 is opened at the approximate confluence of these joints.

A concave circumferential groove 6 into which a rubber ring can be inserted is formed on the outside of the upstream joint 2, forming a so-called rubber ring opening, and a stopper position at the end of the sewage pipe into which it is inserted is chamfered 7. Therefore, the PVC sewer pipe (not shown) on the upstream side can be inserted as is without using adhesive.

The downstream joint part 3 is provided with a short PVC adhesive socket collar 8 whose outer end protrudes and forms a so-called insertion port 8a.This adhesive socket collar 8 is made of a wooden type ( (not shown),
When molding the FRP box body 1, both are integrated at the same time. Therefore, the sewer pipe made of vinyl chloride on the downstream side can be easily joined by fitting the rubber ring socket-equipped sewer pipe 13 into the insertion port 8a or by using an adhesive.

A stepped socket 9a that is not chamfered is formed in the branch pipe joint 4, and an adhesive socket made of PVC having the same end surface as the outer end of the branch pipe joint 4 and a stopper 9b is formed in the socket 9a. A mouth collar 9 is provided.
This adhesive socket collar 9 is provided in the same manner as the adhesive socket collar 8 described above. Note that a rubber ring socket may be used instead of the adhesive socket collar 9, but in this case only if the diameter of the branch pipe joint part 4 is the same as the diameter of the upstream joint part 2.

A stepped socket part 10a without chamfering is formed in the cleaning port pipe joint part 5, and this socket part 10a has the same end surface as the outer end of the cleaning port pipe joint part 5, and is provided with a stopper 10b. , an adhesive socket collar 10 made of injection molded PVC is provided. This adhesive socket collar 10 is provided in the same manner as the adhesive socket collar 8 described above.

In addition, in Figure 1, 11 is the cleaning port pipe, approximately 250mm.
It is made of φ PVC and has a manhole cover 1 on its top end.
2 is installed. Also, this manhole cover 1
A cast iron protective casing (not shown) is placed over the casing 2.

Since this embodiment has the configuration described above, it is used, for example, as follows. That is, after completely excavating the pipe trench from the main sewer pipe to the location where the pipe is installed and within the residential property, pipe installation work is carried out while adjusting the slope. First, the cleaning port pipe 11 is attached to the pipe body 1 using adhesive. After insertion, install this basin main body 1 in the excavation groove, simply insert the upstream wastewater pipe into the rubber ring socket of the upstream joint 2, then connect the branch pipe to the branch pipe joint 4, and connect the downstream pipe to the downstream joint 4. The downstream sewage pipes are connected to the joints 3, respectively. In this way, the simple type basin of this embodiment can be installed in one go.

In addition, although the simple type box in this example was explained as a cheese type, the present invention is not limited to this, and can be applied to any type, such as a type without branch pipes, an elbow type, a Y type, an LT type, and a WLT type. It is.

In addition, although the simple molding method of this embodiment has been explained using the hand lay-up method, the present invention is not limited to this, and any method such as vacuum molding method, pressure back molding method, and spray method can be used. The main body of the box can be molded.

Furthermore, it goes without saying that the simple type of basin of the present invention may be made smaller in diameter and used as a simple type basin for residential use.

[Effect of idea]

According to the present invention, since it is a simple mold made of FRP, a wooden mold can be used for molding, it can be produced at a low cost, and it can be adapted to small-lot production of a wide variety of products.Moreover, it has high strength. For this reason, it can be compared to concrete pits. Furthermore, if there is a weak part in the main body of the box, thick reinforcement can be easily performed. Moreover, unlike concrete pits, it is extremely light in weight, which further improves workability even in narrow and sludge-covered areas.

In addition, it is equipped with a socket or socket consisting of a rubber ring socket and an adhesive socket collar made of PVC, so you only need to prepare adhesive, making it possible to install it in one go, further improving workability. do.

[Brief explanation of drawings]

Fig. 1 shows an embodiment of the present invention, a partial cross-sectional side view (cross section A to A in Fig. 3), and Fig. 2 shows an example from B to B in Fig. 1.
A sectional view, FIG. 3 shows a 1-part sectional view taken in the direction of arrow C in FIG. 1. DESCRIPTION OF SYMBOLS 1...Cut body, 2...Upstream side joint, 3...Downstream side joint, 5...Cleaning port pipe joint, 6...Concave circumferential groove, 8, 10...Adhesive socket collar.

Claims (1)

[Scope of Claim for Utility Model Registration] A simple structure made of synthetic resin in which an upstream joint and a downstream joint are opened on a plane in the basin body, and an upward cleaning port pipe joint is opened between these joints. In the mold box, the upstream joint part is a rubber ring socket, and the downstream joint part is a socket into which a PVC adhesive socket collar integrated during molding of the box body is fitted,
A simple type basin in which the cleaning port pipe joint part is a socket or a rubber ring socket into which a PVC adhesive socket collar integrated at the time of molding the basin body is fitted, and the basin body is molded by FPR.