JPH11115990A - Cylindrical body for on-site waste water purifying tank and on-site waste water purifying tank - Google Patents

Abstract

PROBLEM TO BE SOLVED: To manufacture a on-site waste water purifying tank to deal with easily the tendency of large tanks having the diameter of approximately 1 m to 2.8 m and the length of approximately 3 m to 13 m. SOLUTION: A cylindrical body, in which protruded sections 6 having the area of one end face larger than the area of the other end face are provided and the protruded sections are 6 provided with folding faces 7 heading for the center, is used as a unit body 5, and a cylindrical body formed by inserting protruded sections 6 of another separate unit body 5 into an end face of large area of the unit body 5 is fitted with an end plate 2 on the end face of large area of the cylindrical body, and partitions 3 are bonded on the folding faces 7 of the fitted unit bodies 5 to form and assemble compartments 8.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tubular body for a septic tank made of FRP used for treating sewage and wastewater (wastewater), and a large-sized septic tank using the same.

[0002]

2. Description of the Related Art FRP (fiber reinforced plastic) is a thermosetting resin such as an unsaturated polyester resin, an epoxy resin or a phenol resin, a reinforcing agent such as a glass fiber, an aramid fiber or a carbon fiber, and calcium carbonate or silicate. It is formed by reacting and curing a mixture of a filler such as magnesium and a catalyst such as a peroxide.

[0003] The above-mentioned FRP is formed into various shapes,
Large-sized septic tank used for treating sewage and wastewater (wastewater) (diameter approximately 1m to 2.8m, length approximately 3m to 13m)
As shown in FIG. 4, usually, a cylindrical body 1, a head plate 2 for sealing both sides of the cylindrical body, and a partition plate 3 for forming each chamber
It consists of. These large septic tanks are provided with a reinforcing material 4 for preventing deformation due to water pressure when the wastewater (wastewater) is filled or earth pressure when buried in the soil. (Not shown) for processing is performed.

In these members, the cylindrical body 1 is formed by a spray-up method or a hand lay-up method using a mandrel having a diameter of about 1 m to 2.8 m and a length of about 3 m to 13 m. Further, the end plate 2, the partition plate 3, and the reinforcing member 4 are formed by a special mold by the spray-up method or the hand lay-up method as described above.

In the septic tank, the above-mentioned members are sequentially assembled by bonding with an adhesive or a bolt. First, in order to secure the shape of the formed cylindrical body 1, a reinforcing member 4 is attached according to a predetermined length. Next, the end plate 2 is fitted to one side of the cylindrical body 1, the functional components are attached to the other end thereof, and the partition plate 3 is sequentially joined to the cylindrical body 1. The end plate 2 is fitted to the other end to complete a septic tank.

[0006]

In the prior art,
When assembling a large cylindrical body 1 having a diameter of about 1 m to 2.8 m and a length of about 3 m to 13 m, and a septic tank,
The following issues are raised. First, a large-sized molding machine that is extremely long in the axial direction is required in molding the cylindrical body 1, and second, a reinforcing member 4 that secures the shape of the cylindrical body 1 is required. Third, the cylindrical body 1
In order to attach the reinforcing member 4 therein, the reinforcing member 4 hinders the partition plate 3 for forming the compartment and the loading or assembling of the functional component to be filled. An object of the present invention is to easily assemble a large septic tank without the need for a large molding machine and the reinforcing member 4.

[0007]

According to a first aspect of the present invention, as shown in FIGS. 1 and 2, a projection 6 having an area of one end face smaller than that of the other end face is provided. A cylindrical body provided with a folded surface 7 having a protruding portion 6 directed to the center is defined as a unit body 5, and a protruding portion 6 having an end surface having a small area of another unit body 5 is inserted into an end surface having a large area of the unit body 5. Thus, a septic tank cylindrical body 1 composed of a plurality of unit bodies 5 fitted sequentially is obtained.

According to a second aspect of the present invention, as shown in FIG. 3, one end face has a protrusion 6 having a smaller area than the other end face, and the protrusion 6 faces the center. The cylindrical body provided with the folded surface 7 is referred to as a unit body 5, and the unit body 5
A plurality of unit bodies 5 which are sequentially fitted by inserting the protruding portions 6 of the end faces having a small area of another unit body 5 into the end face having a large area of
And the end plate 2 fitted to the end face having a large area of the tubular body, and the projecting portion 6 of the unit body 5 fitted in sequence.
The separator plate 3 is joined to the folded surface 7 to obtain a septic tank in which the compartment 8 is formed.

That is, as described above, by fitting a plurality of unit bodies 5, a large body that is extremely long in the axial direction of the cylindrical body 1 can be formed. In addition, since the deformation of the cylindrical body 1 can be prevented by providing the protruding portion 6 and the turning surface 7 on the unit body 5, the reinforcing member 4 becomes unnecessary. This facilitates loading and assembling of the functional components to be filled in the tubular body 1 and the partition plate 3.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention relates to molding of a large tubular body 1 having an axial length of about 3 m to 13 m, particularly a horizontally long one.
And it is intended for septic tanks using it. When molding the horizontally long tubular body 1 as described above, a large-sized molding machine corresponding to the tubular body 1 is required, and the reinforcing member 4 needs to be incorporated so that the formed tubular body 1 is not deformed.

According to the present invention, in order to solve the above-mentioned problems, a cylindrical body which is the smallest in the horizontal direction, that is, a unit body 5 of a cylindrical body is formed, and a plurality of the unit bodies 5 are joined according to a scale. This corresponds to an increase in size. In this case, the lengths of the unit bodies 5 do not necessarily have to be the same, and it is possible to prepare several types of lengths and combine them as appropriate. And
The unit body 5 is provided with a protruding portion 6 having an area of one end face smaller than the area of the other end face, and furthermore, the protruding portion 6 is provided with a folded surface 7 toward the center. The length of the protruding portion 6 and the height of the turning surface 7 vary depending on the diameter and thickness of the unit body 5, but may be approximately 30 mm to 150 mm, respectively. With this structure, it is possible to prevent deformation due to water pressure when filling drainage or earth pressure when burying water.

When a plurality of unit bodies 5 are joined, a protruding portion 6 of an end surface having a small area of another unit body 5 is inserted into an end face having a large area of the unit body 5, and thereafter, they are sequentially fitted. If it goes, a large and horizontally long cylindrical body 1 can be easily formed. The fitting portion is made of a FRP molding material and joined (adhered) by spray-up or hand lay-up.

The above-mentioned septic tank using the large, horizontally long tubular body 1 is composed of the tubular body 1, the end plate 2 for sealing the end face of the tubular body 1, the partition plate 3 for forming the compartment 8, and the processing function. It is composed of parts for exhibiting. As a matter of course, an inlet for drainage, an outlet for treated water, and a manhole as an inspection port are provided in post-processing.

To assemble the septic tank, the end plate 2 is fitted to the end of the cylindrical body 1 having the larger area. Next, the partition plate 3 is joined to the folded surface 7 of the projecting portion 6 of the unit body 5 of the tubular body 1 in accordance with the size of the predetermined compartment 8.
To form At this time, when a functional component is required, it is filled before the partition plate 3 is joined. Thereafter, this operation is sequentially repeated, and finally, the partition plate 3 is joined to the folded surface 7 of the protruding portion 6 of the unit body 5 to complete the operation.

Although the above-mentioned FRP molding material is used for joining the partition plate 3 and the folded surface 7, the two may be fixed with bolts and then overlaid with the FRP molding material. Also, the shape of the septic tank is such that the cylindrical body 1 is circular,
It may be elliptical or substantially square.

[0016]

FIG. 1 shows a unit body 5 according to the present invention. The unit body 5 has a diameter of 2.8 m, a length of a protrusion 6 of 80 mm, and a height of a folded surface 7 of 100 mm. FIG. 2 shows the cylindrical body 1 in which the unit 5 is fitted in three parts, and a body having a length of 6 m is formed. Each fitting was overlaid with FRP molding material.

FIG. 3 shows a state in which the end plate 2 is fitted to a cylindrical body in which four parts of the unit body 5 of the present invention are fitted, and the functional parts are filled (not shown). The septic tank in which the partition plate 3 is joined to the surface 7 to form the compartments 8 sequentially is shown. Each fitting part and each joining part were overlaid with the FRP molding material. By the above-mentioned assembly, the fitting portion of the unit 5 plays the role of the reinforcing member 4, and the partition plate 3 can be easily joined due to the presence of the folded surface 7 of the unit 5.

[0018]

As described above, according to the present invention,
By using a plurality of cylindrical body units, it is easy to increase the size, so a large molding machine is not required, and since the unit body has a folded surface on the end surface, a reinforcing member for the body fitted with a plurality of units 4 is unnecessary. Furthermore, when assembling the septic tank using the tubular body, there is no reinforcing material, so that the partition plate and the functional components forming the compartment can be easily carried in, installed, and joined.

[Brief description of the drawings]

FIG. 1 is a perspective view of a unit body of a tubular body according to an embodiment of the present invention.

FIG. 2 shows an axial horizontal sectional view of a cylindrical body according to an embodiment of the present invention.

FIG. 3 shows an axial horizontal sectional view of a septic tank according to an embodiment of the present invention.

FIG. 4 is a horizontal sectional view of a conventional septic tank in an axial direction.

[Explanation of symbols]

1. 1. cylindrical body End plate 3. Partition plate 4. Reinforcement
5. Unit body 6. Projection 7. Folded surface 8. Compartment

Claims (2)

[Claims] 1. A cylindrical body having a protruding portion having an area of one end surface smaller than the area of the other end surface, and having a folded surface in which the protruding portion faces the center, wherein the unit body is A septic tank cylindrical body composed of a plurality of unit bodies which are sequentially fitted by inserting a projecting part of an end surface having a small area of another unit body into an end surface having a large area of the unit. 2. A cylindrical body having a projecting portion having an area of one end face smaller than the area of the other end face, and having a folded surface in which the projecting portion is directed to the center, is a unit body. A cylindrical body composed of a plurality of unit bodies sequentially fitted by inserting a projecting portion of an end surface having a small area of another unit body into an end surface having a large area, and a head plate on an end surface having a large area of the cylindrical body. A septic tank in which a chamber is formed by fitting and joining a partition plate to a folded surface of a projecting portion of the fitted unit.