JP3180620U - Muddy water filtration device used in communication manholes - Google Patents

Abstract

A compact, lightweight, and high-performance muddy water filtration device capable of purifying water stored in a communication manhole in a short time by one person.
A small tubular main body 2 having an inlet 4 formed at one end and a drain outlet 5 formed at the other end, and a bag filter 6 detachably installed inside the main body 2 are provided. In the filtering device, by using a composite material such as glass fiber reinforced plastic as the material of the tubular body 2, the weight and impact resistance of the body can be reduced. The use of lightweight, high-quality ultrafine fibers has strengthened the filtration function and speeded it up.
[Selection] Figure 3

Description

The present invention relates to a lightweight, compact, high-performance muddy water filtration device for draining water stored in a communication manhole to a public sewer.

In order to drain the water stored in the manhole to public sewers during construction, laying, removal, repair, inspection, etc. of communication manholes, the polluted water is filtered and discharged according to the provisions of the Recycling Promotion Law. It is supposed to be.

Steel notch tanks and the like are often used for filtering contaminated water at construction sites. This method separates and drains clean water from a V-notch formed on the side of the tank by sedimenting mud and soil in the tank.

JP 2002-28407 A JP 2005-131565 A

Steel notch tanks used for the filtration of contaminated water at construction sites are heavy and rusting, which puts a heavy burden on the work. In addition, the filtration process using the notch tank takes time to settle mud and soil in the tank, and also takes time and effort to treat the sludge settled on the bottom of the tank. In order to solve these problems, the inventions of Patent Documents 1 and 2 have been made.

However, the filtration device described in Patent Document 1 is difficult to assemble and move the entire device due to the complexity and size of the structure, and is not suitable as a filtration device for a relatively small amount of accumulated water in a communication manhole.

Moreover, although the description of the filtration apparatus of the said patent document 2 is "portable" in the specification, since a plurality of filtration chambers are sectioned and a filter is laid for each filtration chamber. , You can guess that it is quite large and heavy. This type of filtration device is premised on use at a civil engineering construction site where work is continued for a long time, and is not suitable for work of a communication manhole performed by a small number of people in a short time.

Furthermore, since the filter laid inside the filtration device described in Patent Document 2 uses granular materials such as mountain sand, river sand, and pumice as the filter medium, this further increases the weight of the device itself. In addition, it takes time to replace and discard the filter.

The present invention provides a high-performance filtration device that solves the above-mentioned problems and that can quickly and efficiently filter muddy water accumulated in a communication manhole with a small, light, and simple configuration. For the purpose.

In order to achieve the above object, the invention according to claim 1 uses a light-weight and high-strength material for a tubular body having an end portion having an inflow port and an end portion having a drain port.

In addition, a high-performance bag filter using a synthetic chemical fiber that is lightweight and excellent in filtration performance as a material is detachably laid inside the tubular main body.

Since the present filtration device is designed to be small and light as described above, it can be transported and installed by one worker, and the operation of filtering the accumulated water inside the communication manhole can be performed.

In addition, the lightweight and high-performance bag filter made of synthetic chemical fiber can filter particulate dust at a high speed, which greatly improves the work efficiency and shortens the work time compared to the conventional method. Is what it brings.

It is a figure which shows the structure of the filtration apparatus of this invention for every assembly. It is the inlet_port | entrance side side view and drain outlet side view of the filtration apparatus of this invention. It is a figure which shows the state at the time of use of the filtration apparatus of this invention.

  As shown in FIG. 1, the filtration device of the present invention is constituted by four assemblies of (A) inlet side end, (B) drain outlet side end, (C) tubular body part, and (D) filter part. . Further, as shown in FIG. 2, the inlet side end (A) includes an inlet 4, a pressure gauge attachment port 7, and a pressure release valve attachment port 8.

  Both ends of the tubular main body (C) are inner screw sockets, and the inlet side end (A) and the drain outlet end (B) are respectively screwed into the inner screw socket. (C) is joined. Moreover, packing is arrange | positioned at the joining surface and the water leak from this joining surface is prevented.

The inlet 4 provided at the inlet side end (A) and the outlet 5 provided at the outlet side end (B) have a diameter to which a 50A hose can be connected.

As a use form of this filtration apparatus, the hose of the muddy water suction pump is connected to the inflow port 4, and the hose for draining into the sewer is connected to the drain port 5. The muddy water inside the manhole enters the filtration chamber 3 from the inlet 4 by the suction force of the pump, and is filtered by the filter 6 in the process of passing through the filtration chamber 3. The filtered water is discharged from the drain 5 and passes through a hose and drains into a sewer or the like (FIG. 3).

  The size of this filtration device (Fig. 3) is 22.8cm in diameter of the main body 2, the length from the tip of the inlet 4 to the tip of the drain 5 is as small as 130m, and the material is a filament winding method. By using the manufactured glass fiber reinforcement, weight reduction is realized while maintaining high strength and corrosion resistance. The total weight of this device is 15kg, which is one tenth of a steel notch tank (for 1 cubic meter). These miniaturization and weight reduction enabled one worker to filter and drain muddy water in the communication manhole.

In addition, a pressure gauge attachment port 7 for displaying the pressure in the filtration chamber 3 and a pressure release valve designed to operate when a pressure of 87 KPa or more is applied to the inlet side end (A) The mounting opening 8 is provided, and the apparatus can be prevented from being damaged by abnormal pressure.

The filter part (D) can be attached and detached through the release part obtained by rotating the inlet side end part (A) in the direction opposite to the direction of attachment and detaching the end part from the tubular body part (C). It is possible. The filter 6 can be cleaned and reused when it is clogged as a whole.

The filter 6 employs synthetic chemical fiber obtained by heat-treating polypropylene fiber as a raw material, which makes it possible to filter fine particles up to a size of 50 μ at a flow rate of 380 liters per minute. . Further, the use of the synthetic chemical fiber helps to reduce the weight of the entire apparatus.

(A) Inlet side end (B) Drainage side end (C) Tubular body (D) Filter part
DESCRIPTION OF SYMBOLS 1 Filtration apparatus 2 Main body 3 Filtration chamber 4 Inlet 5 Drain outlet 6 Filter 7 Pressure gauge attachment port 8 Pressure release valve attachment port

Claims (4)

A muddy water filtration device for draining water stored in a communication manhole to a public sewer, etc., having a tubular body with an inlet formed at one end and a drain outlet formed at the other end, A filtration apparatus comprising: a bag filter detachably laid inside the main body. The filtration device according to claim 1, wherein a composite material having improved strength, such as glass fiber reinforced plastic, is used as a material for the tubular main body. The filtration device according to claim 1 or 2, wherein the bag filter uses light and high-quality ultrafine fibers such as polypropylene fibers as a material. The filter device is characterized in that a release port for installing a pressure release valve and a release port for installing a pressure gauge are formed at an end portion where an inflow port is formed. The filtration device according to 1, 2 or 3.

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