JPS5931351Y2 - Septic tank internal partition structure - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a septic tank internal partition structure, and is useful when an aeration chamber and a settling chamber are separated by a partition plate in a sewage septic tank made of FRP (glass fiber reinforced plastic).

In a sewage septic tank, as shown in Fig. 1, two longitudinal ribs 1', 1' are provided on the inner surface of the tank wall, and these ribs 1'
, 1', and insert the partition plate 2' into the groove between the partition plates 2' and 1'.
The inside of the tank is divided into an aeration chamber and a settling chamber.

However, this sewage septic tank is usually made of FRP and is used by being buried under the ground.

Therefore, there is a problem in that the tank body is distorted by the soil after burial and during transportation, and in this state of distortion, the partition plate is likely to separate from the groove between the ribs.

The septic tank internal partition structure according to the present invention was devised in view of the above points, and the septic tank wall is provided with an inward bent step that extends laterally, and the inner surface of the septic tank wall is provided with an inwardly bent step. two longitudinal ribs are provided forming a groove between the ribs;
A partition plate is fitted into the groove, and the rib at the step portion is provided with a fitting recess or notch, and the partition plate is fitted into the fitting recess or notch integrally with the partition plate. This configuration is characterized in that the provided convex portions are fitted.

The present invention will be explained below with reference to the drawings.

In Fig. 2, reference numeral 1 denotes a septic tank body made of FRP, and an inclined stepped portion 2 extending in the horizontal direction and bent inward on the tank wall.
, 2... are provided, and a flange is provided at the upper end of the tank wall.

3.3 are two vertical ribs provided on the inner surface of the wall of the septic tank, and a groove 4 is formed between the ribs 3, 3.

The ribs at the step portions 2, 2, . . . are provided with fitting recesses 5, 5, .

6 is a flange provided at the upper end of the septic tank tank, and 7 is a fitting recess provided on the upper surface of the flange 6 facing the groove 4 between the ribs 3, 3.

8 is a partition plate made of FRP, and the groove 4 between the ribs 3 and 3 is
It has a shape that can be fitted into the

This partition plate 8 has stepped portions 20, 20, . . . corresponding to the stepped portions 2, 2, . are convex portions 9, 9, etc. that are fitted into the fitting recesses 5, 5, etc. of the ribs 3, 3, etc.
... is provided.

Reference numeral 10 denotes an ear portion provided at the upper end of the partition plate 8, and is shaped to fit into the recess 7 on the upper surface of the flange.

50 is a recess provided as necessary in the rib at the bottom of the tank; 9
0 is a convex portion provided on the partition plate corresponding to this recessed portion 50.

In the above, the partition plate 8 is the rib 3, 3 on the inner surface of the septic tank wall.
The protrusion 9 of the partition plate 8 is fitted into the groove 4 between the ribs 3, 3.
It is fitted into the recessed portion 5 of 2 with a sealing material (for example, butyl rubber) interposed therebetween.

The ears 10 of the partition plate 8 are fitted into the recesses 7 of the upper end flange of the tank.

These ears 10 and recesses 7 can also be omitted.

The ribs 3, 3 prevent bending deformation of the septic tank body due to the lateral moment of the septic tank body, and the above-mentioned step portions 2, 2
. . . prevents bending deformation of the septic tank body due to the longitudinal moment of the septic tank body.

Therefore, since the intersecting portions 5, 5, . . . of the ribs 3, 3 exist at the intersections of the ribs 3, 3 and the step portions 2, 2, . The recessed portions 5, 5... and the convex portions 9°9... of the partition plate 8 are located at locations where the septic tank body is unlikely to be deformed or strained by moments in any direction. , are mated.

Therefore, even if the entire septic tank is subjected to distortion, this base platform can
It can be held stably, and the partition plate can be stably fixed.

In the present invention, the fitting recess 5 of the rib may have a configuration in which the rib is bulged, as shown in FIG. 3 and FIG. 3B.

Also, instead of fitting the convex part of the partition plate with the recessed part of the rib,
As shown in FIG. 3C, a fitting notch 500 may be provided in the rib, and the convex portion of the partition plate may be fitted into this notch.

According to the septic tank internal partition structure according to the present invention, as described above, even if the septic tank main body is subjected to distortion, the fixed state of the partition plate can be stably maintained.

In addition, since a fitting method is used and a bolt method is not used, disadvantages such as poor sealing performance of the partition due to bolt holes can be avoided.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram showing a conventional septic tank internal partition structure, FIG. 2 is an explanatory diagram showing a septic tank internal partition structure according to the present invention, and FIGS. It is an explanatory view showing a combination depression part or a notch part. In the figure, 1 is the main body of the septic tank, 2, 2... are the horizontal steps, 3, 3 are the vertical ribs, 5, 5... are the fitting recesses, and 500 is the fitting part. Notch portion, 6, partition plate, 9.
9... are convex portions of the partition plate 8.

Claims (1)

[Scope of utility model registration request] The tank wall of the septic tank is provided with an inwardly bent step that extends in the transverse direction, and the inner surface of the tank wall of the septic tank is provided with two longitudinal ribs so as to form a groove between these ribs. A partition plate is fitted into the groove, a fitting recess or notch is provided in the rib at the stepped portion, and the partition plate is provided integrally with the partition plate in this fitting recess or notch. A septic tank internal partition structure characterized in that the convex portions are fitted together.