JP2548074Y2 - Sewage basin - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sewage basin that can be constructed in a stable state and can prevent sinking after construction.

[0002]

2. Description of the Related Art In general, sewage generated in each household flows into a sewage basin buried in residential land via a drainage pipe, and is discharged from a drainage pipe connected to the sewage basin to a sewage main pipe. By the way, when installing this sewage basin, after flattening the ground surface, install the sewage basin, attach a predetermined pipe gradient to the inlet and outlet of the sewage basin, connect the drainage pipe, and then fill However, when the ground area of the bottom of the sewage basin is small, not only the sewage basin cannot be set horizontally at the time of construction, but also the sewage basin sinks after construction and poor connection between the sewage basin and drainage pipe occurs. And the slope of the drain pipe changed, so that the sewage could not flow smoothly.

[0003] For example, Japanese Utility Model Publication No. 55-24226 discloses an inflow port and an outflow port provided at a lower portion of a cylindrical body having an open upper portion, and the inflow port and the outflow port are connected by an invert portion having a semicircular cross section. A sewage basin has been proposed in which the inclined side walls are connected to both upper edges of the invert portion, and a flat plate is fitted to the lower end of the cylindrical body to prevent sinking.

[0004]

However, in this sewage basin, a flat plate is fitted into the lower end of the cylinder extending further below the intersection of the cylinder and the inclined side wall. It is uneconomical because extra cylindrical resin material is required to extend downward from the intersection, and it is inconvenient to handle it at the construction site because it increases with weight. The present invention solves such a problem, and provides a sewage basin that has good workability, can be buried in the ground in a stable state, and does not sink down after construction. .

[0005]

According to the present invention, an inflow port and an outflow port are provided below a cylindrical body having an open top, and the inflow section and the outflow port are connected by an invert section. The upper frame is formed in a semicircular cross section, and both upper edges thereof are connected to the lower end of the cylindrical body by inclined side walls which are expanded in a substantially V-shape. It consists of a box body with a locking cylinder at the approximate center of the support frame, and a bottom plate with a locking cylinder on the top of a flat plate. The box body is placed on the bottom plate to lock the box body. It is characterized in that the tubular body and the locking tubular body of the bottom plate are detachably fitted, and the lower end edge of the support frame is brought into contact with the upper surface of the flat plate.

[0006]

The support frame is provided on the bottom wall of the invert portion of the box body, and the locking cylinder is provided substantially at the center of the support frame.
Since the locking cylinder and the locking cylinder provided on the bottom plate are detachably fitted, the weight and the size are reduced. Further, when the bottom plate is installed on a flat ground surface, the sewage basin is installed horizontally and does not sink even after construction.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the drawings. FIG. 1 is a front view of a sewage basin showing one embodiment of the present invention, FIG. 2 is a bottom view of the sewage basin shown in FIG. 1, FIG. 3 is a plan view showing one embodiment of a bottom plate, and FIG. 5 is a cross-sectional view of a main part showing a fitted state of the box body and the bottom plate. In the figure, reference numeral 1 denotes a box body, 2 denotes a bottom plate, and both the box body 1 and the bottom plate 2 are separately injection-molded with a plastic such as vinyl chloride resin or polyethylene.

The basin body 1 is provided with an inflow port 12 and an outflow port 13 below a cylindrical body 11 having an open top, and the inflow section 12 and an outflow port 13 located slightly below the inflow port 12 are formed by an inverting section 14. The invert portion 14 is formed to have a semicircular cross section, and both upper edges of the invert portion 14 and the cylindrical body 1 are connected.
1 is connected to the lower end portion by an inclined side wall 15 which is expanded in a substantially V-shape. A rectangular support frame 16 is provided on the bottom wall of the inverting portion 14, and a locking cylinder 17 is provided substantially at the center of the support frame 16. The locking cylinder 17 is shown in FIG.
As shown in the figure, the groove is divided into four parts by an axial groove a to provide elasticity in the radial direction, and a concave groove 170 is provided on the inner peripheral surface of the locking cylinder 17.

On the other hand, the bottom plate 2 is provided with a locking cylinder 22 on the upper surface of a substantially central portion of a flat plate 21 having an oval shape, and penetrates from the upper surface to the rear surface on the inner peripheral side of the locking cylinder 22. A through hole 23 is provided. The outer diameter of the locking cylinder 22 is substantially the same as the inner diameter of the locking cylinder 17. The locking cylinder 22 is divided into four parts by a groove b in the axial direction to provide elasticity in the radial direction. The outer peripheral surface of the locking cylinder 22 has an inner peripheral surface of the locking cylinder 17. The projection 220 is provided when fitted with the concave groove 170 provided in.

In this embodiment, an example is shown in which the locking cylinder 22 of the bottom plate 2 is inserted into the locking cylinder 17 provided on the bottom wall of the inverting portion 14 and fitted together. On the contrary, the bottom plate 2 is attached to the locking cylinder 17 provided on the bottom wall of the invert portion 14.
The two may be fitted together by extrapolating the locking cylindrical body 22, and the concave groove and the projection may be provided on either side.

In the sewage basin of the present invention, the basin main body 1 and the bottom plate 2 are separately formed, and these are carried into a construction site. Then, the upper surface of the bottom plate 2 is attached to a locking cylinder 17 provided at the bottom of the inverting section 14. The sewage basin is installed on the flattened ground surface, and a predetermined pipe gradient is provided at the inlet 12 and the outlet 13. After attaching the drainage pipe, backfill and complete the construction.

[0012]

[Effects of the Invention] As described above, the sewage basin of the present invention has a basin body and a bottom plate formed separately, and has a support frame on the bottom wall of the invert portion of the basin body and a substantially central portion of the support frame. Since a locking cylinder is provided and the locking cylinder of the bottom plate is fitted and fixed to the locking cylinder, it is possible to reduce the amount of resin material compared to the conventional sewage basin and to reduce the weight and size of the construction. Can be done very easily. In addition, if the sewage basin of the present invention is used, since the bottom plate is in contact with the ground surface, it can be easily installed horizontally during construction,
The sewage basin does not sink after construction.

[Brief description of the drawings]

FIG. 1 is a front view of a wastewater basin showing one embodiment of the present invention.

FIG. 2 is a bottom view of the wastewater basin shown in FIG.

FIG. 3 is a plan view showing one embodiment of a bottom plate.

FIG. 4 is a sectional view taken along line AA of FIG. 3;

FIG. 5 is a cross-sectional view of a main part showing a fitting state of the box body and the bottom plate.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Masu main body 2 Bottom plate 11 Cylindrical body 12 Inflow port 13 Outflow port 14 Invert part 15 Inclined side wall 16 Support frame 17 Locking cylinder 21 Flat plate 22 Locking cylinder

 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A 1-174488 (JP, U) JP-B 50-27302 (JP, B1) JP-B 55-24226 (JP, Y2)

Claims (1)

(57) [Scope of request for utility model registration] 1. An inflow port (12) and an outflow port (13) are provided below a cylindrical body (11) having an open top.
2) and the outlet (13) are connected by an inverting portion (14), and the inverting portion (14) is formed in a semicircular cross section, and both upper edges thereof and a lower end of the cylindrical body (11) are formed. Are connected by an inclined side wall (15) expanded in a substantially V-shape, and a support frame (16) is provided on the bottom wall of the inverting portion (14), and substantially at the center of the support frame (16). Locking cylinder (1
7) and a bottom plate (2) provided with a locking cylinder (22) on the upper surface of a flat plate (21), and the box body (1) is placed on the bottom plate (2). The locking cylinder (17) of the box body (1) and the locking cylinder (22) of the bottom plate (2) are detachably fitted to each other, and the lower end edge of the support frame (16) is flat. A sewage basin characterized in that it is brought into contact with the upper surface of (21).