JP2732374B2 - Kasaage tube of manhole cover for septic tank - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a septic tank
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a moss tube with a lid, and more particularly to a moss tube with an adjustable vertical direction and a tilt angle of a tube end.

[0002]

2. Description of the Related Art Generally, in areas without public sewerage facilities, wastewater discharged from houses and factories must not be discharged into public waters unless it is purified. Therefore, a septic tank is required, but a general septic tank is composed of a septic tank, an oxidizing tank, and a disinfecting tank. It liquefies and partially gasifies. The liquefied part is digested and decomposed by aerobic microorganisms in an oxidation tank, and the treated wastewater is finally disinfected in a disinfection tank and discharged into public waters.

[0003] Such septic tanks are buried in residential land and the like,
Since the septic tank requires maintenance, cleaning and inspection, it requires a plurality of manholes. In order to prevent rainwater from entering the septic tank main body, the manhole cover is set to a predetermined height above the ground surface, for example, about 30 cm, or is deep when the septic tank main body is deeply buried (in Osaka prefecture, the manhole cover is used). If it is buried in a garage, it may be flush with the ground surface.

By the way, if a septic tank is buried in the hole after excavating a hole for burying the septic tank having a predetermined depth, it is difficult to determine the height of the manhole cover. Therefore, in order to absorb the error between the septic tank embedding hole and the septic tank main body, a proposal has been made in which the manhole cover mounting frame is slidable up and down with respect to the upper opening of the septic tank main body (Japanese Utility Model Publication No. 56-3135).
No. 2).

[0005] However, in the proposed manhole cover height adjusting device, in order to increase the height adjustment amount, the manhole cover mounting frame (referred to as a "casing age pipe") is moved in the axial direction. It is necessary to make it longer, and therefore the upper opening of the septic tank body also needs a large rising part,
Although the height adjustment amount can be increased, there is a problem that it is not possible to meet the demand for lowering the position of the manhole cover from the rising portion.

[0006] When the ground surface of a garage or the like is inclined,
Such a limp tube has a problem that the manhole cover and the inclined surface are not flush with each other.

On the other hand, by winding up a band composed of a bud with a shaft having a cross-sectional shape and winding it in a circular shape, when forming a tube, the shaft is used for another bud above which is wound next. There is known a flexible tube which is pushed and fitted against resin elasticity, and the tip of the shaft and the opening of the bud are claw-engaged and integrated to form an arbitrary tube diameter and length. (For example, see Japanese Utility Model Publication No. 41-16849).

The inventors of the present invention have conceived that the above problem can be solved at once by applying such a flexible tube to a mosaic tube of a manhole cover for a septic tank. However, since such a flexible tube can be formed to have an arbitrary tube diameter as described above, it has been found that compatibility with a septic tank or a manhole cover is difficult.

Therefore, an object of the present invention is to solve such a problem.

[0010]

Means for solving the problems of the present invention include a lower mounting ring for framing a manhole provided on the upper surface of a septic tank and an upper mounting ring for detachably mounting a manhole cover. And a supporting ring having an upward U-shaped groove in the lower mounting ring, and a supporting ring having a downward U-shaped groove in the upper mounting ring, respectively. A septic tank manhole comprising a flexible tube made of a band which is wound up and stacked one after another while being fitted into the groove and which can adjust the vertical direction and the inclination angle of the tube end. It is in the moss tube of the lid.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail based on an embodiment shown in the accompanying drawings. FIG. 1 is an exploded side view showing an embodiment of the present invention, FIG. 2 is an exploded perspective view of FIG.
4 is a detailed view of a portion A of FIG. 1, FIG. 4 is a detailed view of a portion B of FIG. 1, FIG. 5 is an exploded side view of another embodiment, and FIG. 6 is an exploded perspective view of FIG.

The septic tank according to the present embodiment is manufactured by blow molding a thick-walled PVC plate. This is a so-called combined treatment septic tank for purifying toilet water and household wastewater of general households collectively. It is suitable for.

This septic tank is divided into four rooms using a filter bed contact aeration system in which anaerobic microorganisms have inhabited the treatment, so that it has four manholes. The wheel is designed to withstand the static load of a car or the like.

In the manhole (diameter: about 450 mmφ or 500 mmφ) of the septic tank main body 1, the manhole cover 10 is removably mounted via a height-adjustable mossage pipe 17 as described below. I have.

Referring to FIGS. 1 and 2, a body-side rising frame 4 having a flange 3 at its lower end as a manhole frame is mounted on the upper surface of the septic tank main body 1 with a plurality of bolts. The main body-side rising frame 4 has a height of about 110 mm and is made by a PVC resin injection molding. This body side rising frame 4
A lower mounting ring 5 as described below is integrally formed at the upper end. That is, the lower mounting ring 5 is formed by an upward U-shaped groove 8 having a long piece 6 on the outer circumference and a short piece 7 on the inner circumference, and a lower support ring 9 described later is fixed to the U-shaped groove 8.

On the other hand, the manhole cover 10 is engaged with the upper mounting ring 11 and is sealed. This upper mounting ring 11 is made, in particular, by injection molding of a PVC resin as shown in FIGS. 1 and 3, and its upper surface has an upward U-shaped groove 14 having a long piece 12 on the outer circumference and a short piece 13 on the inner circumference. , And the manhole cover 10 is locked and hermetically closed. An annular foot 15 is formed on the lower surface, and an upper support ring 16 described later is fixed to the inner surface of the annular foot 15.

Between the lower mounting ring 5 and the upper mounting ring 11 as described above, a limp tube 17 made of the following known flexible tube is interposed. The lather tube 17 is an injection molded product made of PVC or PP resin,
The structure is such that a band 20 composed of a bud 19 with a shaft 18 is sequentially piled up in a circular shape with the shaft 19 positioned upward, as viewed in cross section, to form a tubular body. Then, the shaft 18 is pushed into the opening 21 of the bud 19a (see FIG. 4) having a downward opening to be wound next (see FIG. 4) by pushing open against the resin elasticity.
2 is a flexible tube made by locking and integrating the inside of the opening 21. In other words, it is configured as a stretchable limp tube 17.

In order to form the flexible tube and maintain its shape, the upper and lower support rings 16 and 9 are required.
Is used. That is, as shown in FIG. 4, the lower support ring 9 includes an upward U-shaped groove 23 and a mounting flange 24 extending inwardly of the lower part, and the lower support ring 9 is formed into a U-shaped groove of the lower mounting ring 5. 8 and screw 25
It is stuck in.

The bud 19 of the band 20 at the beginning of winding which constitutes the flexible tube is fitted to the entire circumference of the lower support ring 9 fixed to the lower mounting ring 5. as a result,
Since the shaft 18 projects from the upward U-shaped groove 23, the bud 19 a to be wound next is fitted to the projected shaft 19.
By successively stacking in this way, a tube having a diameter restricted by the diameter of the lower support ring 9 can be formed. When the moss-aged pipe body 17 is formed to have a predetermined pipe length, that is, a predetermined raising amount, it is fitted to an upper support ring 16 fixed to the upper mounting ring 11 as follows.

That is, the upper support ring 16 is constituted by a downward U-shaped groove 26 as shown in FIG. 3, and the outer periphery thereof is abutted on the inner surface of the annular foot 15 and is fixed by screws 27. Of course, instead of using the screws 25 and 27, an adhesive may be used instead of the screws 25. Also, a method of fitting the band body 20 to the upper support ring 16 and forming a flexible tube by the reverse method is used. You may take it. Then, an adhesive is injected into each of the strips 20 fitted to the lower support ring 9 and the upper support ring 16 to firmly fix the two.

If the manhole cover 10 using the moss tube 17 requires a slight inclination with respect to the horizontal,
Upper mounting ring 11 fixing upper support ring 16
When the operator presses or lifts as necessary, the middle bud 19 and the shaft 18 are loosely fitted, so that the tube end can be set to the required inclination angle. Incidentally, the diameter of the moss tube 17 is 450 mmφ or 5 mm.
In the case of 00 mmφ, if the pipe length is 150 mm, about 30
% Elongation, i.e., a tube length of 180 mm, and a maximum tilt angle of 10 [deg.] Can be obtained.

In addition, as described above, the moss tube 17
After forming the coating, a sealing coating agent is applied to the inner surface to provide sealing properties and prevent intrusion of water and gas leakage (of course, this coating may be omitted). The outer surface is hardened by concrete together with the burying of the septic tank main body 1.

Next, a second embodiment will be described. In FIGS. 5 and 6, when the structure of the main body side rising frame 4 and the upper mounting ring 11 is changed, the second embodiment uses the lower supporting rings 16A and 19A as appropriate. .

That is, at the upper end of the main body side rising frame 4A,
In the case of the lower mounting ring 5A made of an inward flange, the lower support ring 9A is formed in a shape that can be joined to the inward flange. If there is a downward U-shaped groove on the lower surface of the upper mounting ring 11A, the upper support ring 16A
Has a shape that can be joined to this U-shaped groove. Of course, the upper support ring 16A and the lower support ring 9A have the downward U-shaped groove 26 and the upward U
It goes without saying that the groove 23 is formed. In addition,
The upper and lower mounting rings 5 and 11 and the support rings 9 and 16 may be integrally formed.

[0025]

According to the present invention, since a flexible tube having an adjustable vertical direction and an inclination angle of the tube end is used for the limp tube, that is, it is constructed as a stretchable lump tube, so At the site, it is possible to make fine adjustments in the vertical direction and the inclination angle of the pipe end simply by pressing or stretching without cutting or screwing work, etc., and the mossage pipe body of the manhole cover of the septic tank It will be convenient. In particular, it is convenient for flush construction with an inclined ground. Further, since the flexible tube is formed while the belt is fitted to the support ring having the U-shaped groove, a limp tube having a diameter corresponding to the diameter of the U-shaped groove can be immediately formed, and the productivity is improved ( For example, it is possible to obtain good compatibility between the moss tube and the septic tank.

[Brief description of the drawings]

FIG. 1 is an exploded side view showing an embodiment of the present invention.

FIG. 2 is an exploded perspective view of FIG.

FIG. 3 is a detailed view of a portion A in FIG. 1;

FIG. 4 is a detailed view of a portion B in FIG. 1;

FIG. 5 is an exploded side view of another embodiment.

FIG. 6 is an exploded perspective view of FIG.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Septic tank main body, 5 ... Lower mounting ring, 9 ... Lower support ring, 10 ... Manhole cover, 11 ... Upper mounting ring, 1
6 ... upper support ring, 17 ... moss tube, 20 ... band

Claims (1)

(57) [Claims] 1. A casserole tube interposed between a lower mounting ring provided on an upper surface of a septic tank for edging a manhole and an upper mounting ring for removably mounting a manhole cover, wherein the lower mounting ring is provided. A support ring having an upward U-shaped groove is provided, a support ring having a downward U-shaped groove is provided in an upper mounting ring, respectively, and a band is sequentially wound and stacked while being fitted into the U-shaped groove of the support ring. A jellyfish tube for a septic tank manhole cover, which is made of a jellyfish tube whose vertical direction and inclination angle of a tube end can be adjusted by a flexible tube.