JPS59203135A - Production of treating tank - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] The present invention is for sedimentation separation of domestic wastewater, industrial wastewater, etc.

The present invention relates to a method of manufacturing a processing tank used for processing such as filtration, decolorization, and removal of harmful substances.

BACKGROUND OF THE INVENTION Conventionally, for example, a treatment tank α0 as shown in FIG. 1 has been used to purify domestic wastewater discharged from a household dining room or the like. In Fig. 1, (1) is a tank body having an opening (1) A at the top, an inlet (2) and an outlet (3) on the side, and partition plates (4), (5). ) k interposed to form a flow path inside the tank body (1) from the inlet to the outlet to provide a filtration chamber (6), a sediment separation filtration chamber (7), and a sediment separation chamber (8). , the filtration chamber (6) has filtration B (
6) A is arranged, and a filter net material (7) A is stretched in the filtration chamber (7) for the sediment 111'. In this way, wastewater flows into the tank body (1) from the inlet (2), is first coarsely filtered by the filtration part (6) A K in the filtration chamber (6), and then passes through the partition plate (4).
) Flows into the sediment separation filtration chamber (7) from the lower communication port (4)A, is finely filtered by the filter net material (7)A, and is precipitated and separated, and then passes through the communication port in the middle of the partition plate (5). (5)
The waste water flows from A into the cape separation chamber (8) and is separated by sedimentation, and the thus purified waste water is discharged from the outlet (3).

The above treatment tank is made of concrete, glass fiber reinforced plastic (FRP), etc., and is manufactured by methods such as molding, hand lay-up, and press molding, but the above method involves a large amount of manual labor and is not suitable for mass production. be.

The present invention aims to improve the above-mentioned conventional drawbacks and provide a method for manufacturing a treatment tank that can be easily mass-produced, and the main point of the present invention is to apply expansion molding to the manufacture of the treatment tank.

The invention will be explained in detail below.

Examples of the treatment tank of the present invention include polyvinyl chloride, styrene-butadiene copolymer, styrene-butadiene block copolymer, acrylonitrile-butadiene-styrene copolymer, and polyethylene.

The material is thermoplastic synthetic resin such as polypropylene or ethylene-propylene copolymer.

The manufacturing process of the present invention consists of the following four manufacturing steps.

1. A step of inserting a tubular body made of a thermoplastic synthetic resin into a swelling mold in a heated and softened state. Step 2 of obtaining a container with openings at the top and bottom
3. Take out the container from the expansion mold and fit it into the opening at the bottom of the bottom plate to which a partition plate has been attached in advance, and form a flow path from the inflow side to the outflow side inside the container with the partition plate. Step 3.4: Connecting the inlet and outlet to the container Step 4. The above steps will be explained below with reference to an embodiment shown in FIG. 2 and below.

In step 1, as shown in FIG.
A, a bulge-molded kiln having an opening molding part (to) B formed at both ends of the body part molding part (1) A and having a smaller diameter than the diameter of the trunk part molding part (to) A; The tubular body Qη made of the above-mentioned thermoplastic synthetic resin is inserted into the tube in a heated and softened state, and plugs 1:11)A, C1l] are placed at both ends of the tubular body CI).
) Fit B. One of the plugs (ell) A has an air pressure inlet (
2) is in contact.

In step 2, as shown in Fig. 3, pressurized air is injected into the inside of the tubular body &1) of the heat-softened shaft from the air pressure inlet connected to the plug 0ηA) to form the tubular body Qυ. A molded article QηA is formed by forming an opening (9) A and a body αηC.
get.

The obtained molded product (c) A is taken out from the expansion mold (to), and as shown in FIG. get. In this case, the two containers α◇ have the same capacity.

The molded article (goods) A may be cut at a predetermined position other than the center. By doing this, containers αη of various capacities can be obtained.

In step 4, connect port a4 at the bottom as shown in Figure 5.
A partition plate αa with a connecting hole α slightly above the center
A bottom plate α11)B with a partition plate α9 having a GA erected thereon is fitted into the bottom opening αd of the container I, and if desired, the partition plate α
◆, (to) both side edges, the inner wall of the container aυ, the bottom plate α1)B and the periphery of the opening α are fixed with an adhesive. This state is shown in FIG.

In step 4, as shown in FIG. 7, an inlet (2) and an outlet (to) are connected to the container αυ.

In this way, a configuration is obtained in which the inside of the container OD is divided into three compartments by the partition plates α and α, so as shown in FIG. The chamber α is defined as a sedimentation separation chamber (end), a filter bag OQA connected to the inlet (2) is arranged in the filtration chamber α→, and a mesh material αηA is stretched over the sedimentation separation filtration chamber αη. In the above steps, steps 3 and 4 may be performed simultaneously or either may be performed first.

In the treatment tank (A), the wastewater to be treated, such as domestic wastewater, which has flowed into the container at 0°C from the inlet (6) is filtered into the filtration chamber Q0.
It is coarsely filtered by the filter bag n6A, flows into the precipitate separation filtration chamber α from the communication port α4)A at the lower part of the partition plate α, is finely filtered by the filter net material 0ηA, and is precipitated and separated. It flows into the sedimentation separation chamber α from the communication port (to) A of the section, undergoes precipitation separation, and is discharged from the outflow port (to).

In addition to the above embodiments, for example, as shown in FIG.
1) Dotted line A by integrally bulging molding of two or three or more connected A.

You can also cut it at the mouth or c position.

If you cut at the dotted line opening, what is the opening at the bottom of the body G?
The diameter is smaller than ηC. In that case, for example, the 10th
The cylindrical partition plate α→, αQ as shown in the figure is the bottom plate α1)
It may be provided in B.

The processing tank obtained by the production method of the present invention has a filter material such as a filter bag and a filter net material, as well as a filter material such as activity and diatomaceous earth.

It is filled with ion exchange resin, charcoal, etc., and is used for various wastewater treatments such as filtration, deodorization, decolorization, and removal of harmful heavy metals.

In the present invention, a tubular body made of a thermoplastic synthetic resin is subjected to expansion molding in a heated and softened state using an expansion mold, so that molding can be performed quickly, and two or more containers can be molded at once. It is possible and extremely easy to mass produce. Further, since a bottom plate is attached as a separate material to the molded container, if a partition plate is attached to the bottom plate in advance, it is extremely easy to form a flow path inside the container using the partition plate. Furthermore, according to expansion molding, the diameter of the opening of the container generally obtained is smaller than the diameter of the body, so the manhole can also be made with a small diameter. A shoulder portion is formed between the body and the opening, which acts as a resistance and prevents the processing tank from floating due to earth pressure.

In addition, according to bulge molding, the shoulder part can be formed so as to be sloped low toward the outer periphery, so if the container has such a shape, the space above the surface of the water to be treated filled in the container can be formed. becomes smaller, improving volumetric efficiency.

[Brief explanation of drawings]

FIG. 1 is a side sectional view showing a conventional example of a processing tank, FIGS. 2 to 11 show the manufacturing process of the processing tank of the present invention, and FIG. 2 is a side sectional view showing process l. 3 is a side sectional view showing step 2, FIG. 4 is a side sectional view of the molded product obtained in step 2, and FIG. 5 is an oblique view showing an embodiment of the bottom plate with a partition plate attached in step 3. The parent diagram, FIG. 6 is a side sectional view showing step 3, FIG. 7 is a side sectional view showing step 4, and FIG. 8 is a side sectional view of one embodiment of the finished product. FIG. 9 is a side sectional view of a molded product according to another embodiment, and FIG. 10 is a perspective view of a bottom plate to which a partition plate is attached according to still another embodiment. In the figure, 01)...container, αd, a1)A...opening, 01)B...bottom plate, α1)C...body,
α: Inlet, (to) Outlet, Q41
, aυ... Partition plate, (E)... Processing tank Patent applicant Aron Kasei Co., Ltd. Fang 3 Fig. 4 Fig. 5 Eye valve Fig. 6 O 7 Resistance〉 8 Fig. 11 , /-, y Fang Figure 9 Fang 10 Figure

Claims (1)

[Claims] Step 1 of inserting a tubular body made of a thermoplastic synthetic resin into an expansion mold in a heated and softened state; Expansion molding of the tubular body by injecting pressurized air into the interior of the tubular body. Step 2: Take out the container from the expansion mold, fit the bottom plate with the partition plate attached in advance into the opening at the bottom, and insert the partition plate inside the container. Step 3 of forming a flow path from the inflow side to the outflow side by forming a flow path from the inlet side to the outflow side; Step 4 of connecting the inlet and outlet to the container; Step J of 2.3.4;