JP2002070141A - Soil chamber made of polyvinyl chloride - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve problems that a polyvinyl chloride chamber and a concrete curbstone are merely kept in contact on a smooth connecting face without a meshing structure at an inspection port of sewage discharge, they are separated by the transit of vehicles, thus causing a problem on durability, a polyvinyl chloride tube erected from underground and the polyvinyl chloride chamber at the inspection port are easily separated at the connecting face, and the rainwater accumulated on the flat polyvinyl chloride chamber and the curbstone infiltrates from the polyvinyl chloride chamber. SOLUTION: The connecting face of the polyvinyl chloride chamber with the concrete curbstone is machined into a recessed groove or a protruded ridge to be firmly integrated with concrete mortar, and the upper face of the curbstone is inclined to improve the drainage property. The polyvinyl chloride chamber and the curbstone are firmly connected and are not separated easily, and rainwater hardly infiltrates into the soil chamber through the polyvinyl chloride chamber and the curbstone.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a vinyl chloride sewage basin at an inspection port for drainage and underground sewage pools.

[0002]

2. Description of the Related Art Referring to FIG. 3, a conventional sewage drainage inspection port comprises an underground sewage basin, a rising PVC pipe 7 having a diameter of about 150 mm, a vinyl chloride tub 1, a metal lid 6, and a concrete curbstone 2. Is done. The rising PVC cylinder 7 is joined to the PVC basin 1 and the bonding surface 8 on the ground surface, and the periphery thereof is fixed with the concrete curb 2. A metal lid 6 having a diameter of about 150 mm is fitted. Concrete curb 2
The outer perimeter is usually asphalt or concrete.

[0003]

The sewage drainage inspection port described in the prior art is easily separated by the passage of heavy vehicles because the PVC pit and the concrete curb only touch the smooth pit outer surface. And there was a problem in durability. In addition, the rising PVC cylinder and the PVC tub are easily separated at the joint surface. There was an inconvenience that the rainwater accumulated on the upper surface of the PVC basin entered the gap between the PVC basin and the metal lid.

[0004] The vinyl chloride basin of the present invention provides a vinyl chloride basin and a concrete curb which have a structure in which the vinyl chloride basin and the concrete curb are firmly joined to each other and are not easily separated, and the surface of which is less likely to collect rainwater.

[0005]

Means for Solving the Problems The vinyl chloride basin of the present invention is constructed such that a concave groove or a convex ridge processing is performed on a joint surface with a concrete curb, and the concrete mortar of the curb is united with the concrete mortar. Improves drainage as an inclined surface.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments 1 and 2 of a vinyl chloride curbstone according to the present invention will be described with reference to the drawings.

[0007]

Embodiment 1 Embodiment 1 of a vinyl chloride box of the present invention will be described with reference to FIG. It is composed of a PVC pipe 7 standing up from a drain pipe buried underground, a PVC tub 1 connected to the upper surface of the PVC pipe 7, and a concrete curb 2 provided circularly around the PVC tub 1. A metal lid 6 made of casting is fitted to the upper end surface of the vinyl chloride box 1. On the upper end surface of the outer periphery of the vinyl chloride box 1, when forming the concrete curb 2 by pouring mortar, a groove 4 provided for the purpose of strengthening the bonding force and preventing separation is machined.

[0008]

Embodiment 2 Embodiment 2 of the vinyl chloride box of the present invention will be described with reference to FIG. It is composed of a PVC pipe 7 standing up from a drain pipe buried underground, a PVC tub 1 connected to the upper surface of the PVC pipe 7, and a concrete curb 2 provided circularly around the PVC tub 1. A metal lid 6 made of casting is fitted to the upper end surface of the vinyl chloride box 1. On the upper end surface on the outside of the PVC basin 1, when forming the concrete curb 2 by mortar pouring, a convex ridge projection 5 provided for the purpose of strengthening the bonding force and preventing separation is processed.

In both the first and second embodiments of the vinyl chloride box of the present invention, a metal lid 6 made of casting is fitted on the ground surface of the vinyl chloride box 1. The upper surface of the PVC basin 1 and the surrounding concrete curb is inclined about 5 mm downward toward the outer edge, so that there is no step at the part in contact with the ground.

[0010]

According to the present invention, there is no accident of breakage of the PVC slab and concrete curb. Since the surface of the concrete curb between the outer periphery of the PVC pit and the ground is inclined toward the outer periphery, there is no step, so the impact on vehicles passing above can be reduced, and at the same time, the The impact is also reduced and the durability of the inspection port can be expected to be improved, so that rainwater does not enter the inspection port from the gap between the PVC casing and the metal lid in rainy weather. In addition, the joint between the PVC pipe and the PVC truss was eliminated, since the PVC truss and the concrete curb were integrated, eliminating the accident. In addition, the construction period is shortened because the number of steps to create a holding frame for concrete curb during construction and backfill after completion is reduced.

[Brief description of the drawings]

FIG. 1 is a sectional perspective view of a vinyl chloride box according to a first embodiment of the present invention.

FIG. 2 is a partial sectional perspective view of a vinyl chloride box of Example 2 of the present invention.

FIG. 3 is a sectional perspective view of a conventional vinyl chloride box.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 PVC-made square 2 Concrete curb 3 Inclined surface 4 Concave groove 5 Convex ridge 6 Metal cover 7 PVC pipe 8 Joining surface

Claims (2)

[Claims] 1. A sewage basin made of vinyl chloride, characterized in that an upper outer periphery is provided with a portion to be connected to a concrete curb. 2. The vinyl chloride sewage basin according to claim 1, wherein the top of the concrete curb has an inclined structure.