KR200187320Y1 - Storm overflow chamber with hinged cover in combined sewer system - Google Patents

Abstract

This paper deals with stormwater silos used in the conduits for collecting sewage from the combined sewer.

Rainwater silos of combined sewers process both sewage and rainwater at the same time, so the flow rate is greatly increased during rainy weather, and the amount of sand deposited on the ground as sewage flows due to the increase of sewage flow rate or flows from surrounding farmland. Sand flows into the drainage pipe and a large amount of floating impurities such as wood chips flows into the drainage pipe. In this case, it is difficult to install a separate facility due to the narrow conditions of the sewer. In order to prevent the inflow of contaminants, a sewer inlet is formed at the bottom of the sewer, and a collecting pipe inlet is formed at the bottom of the sewer, which connects the collecting pipe downwards, and in the up and down direction by a hinge. Install the inclined cover which is rotated at an appropriate angle so that the downstream side can go up. The grating was set to be the equal intervals vertically and install the overflow bumps of appropriate height for proper distance on the downstream side of the sewer to obtain.

In this case, when the amount of normal sewage is low, the sand in the sewage is deposited in the channel, and the sewage and floating contaminants fall to the bottom of the channel through the slope cover, and the sewage flows back to the entrance of the collecting pipe along the channel formed by the overflow barrier. The float enters the metal grid.

When it rains and a large amount of rainwater is mixed with the sewage, the flow rate of the sewage inlet increases, and the sand with a large proportion of the sewage flows in the sewage by the inertial force and most of the sand flows downstream of the sewer. There is only a little sand in the tea house.

In addition, during rainy weather, the sewage inlet flows with the increase of the flow rate, so that floating sewage in the sewage tends to flow in the upper part of the water, so it hardly enters the entrance of the collecting pipe at the bottom of the channel.

Therefore, sand is not deposited at the bottom of the collecting pipe and sand is not introduced into the sewage treatment plant, thereby preventing various obstacles due to sand inflow.

Description

Storm overflow chamber with hinged cover in combined sewer system}

The purpose of the present invention is to provide storm sewers that do not introduce sand contained in the sewage even in rainy weather and have less floating contaminants in rainwater soils that are used for the conduit pipes of the combined sewerage when there are no sites available nearby. .

The present invention relates to stormwater sewage used in combined sewerage, where no site is available.

Conventionally, rainwater silos having the same width of the channel and perpendicular to the length of the channel are installed at the bottom of the sewer, and the steel grid is installed at the entrance, and the entrance of the drainage pipe is installed below it. It flowed into the chamber and flowed into the collecting pipe.

In this case, the sand contained in the sewage flows into the storm drain installed on the bottom of the sewage system and flows into the drainage pipe, and the floating sewage in the sewage is caught by the iron grid installed at the entrance of the drainage pipe to block the entrance. If you do not clean the surface of the iron grid and the inside of the collecting box by reducing the cross-sectional area of sewage, you cannot collect the planned amount of sewage, so you have to work to remove it every time it rains, and you have to clean it regularly on a regular basis. It was difficult and labor intensive.

In addition, in rainy weather, the amount of rainfall and sewage are combined to increase the flow rate, and the flow rate in the sewage system becomes faster. This heavy sand is a direct cause of many problems as almost all of it flows with the sewage at the inlet to the sewer and into the sewage treatment plant.

The technical task of this paper is to provide storm sediment that does not introduce sand contained in the sewage and less floating impurities when the flow rate increases during rainy weather when sewage is collected from a site where there is no available site. By opening and closing the cover to facilitate the maintenance of the cleaning.

1 is a plan view showing the storm soil of the present invention.

Fig. 2 is a longitudinal sectional view of the storm soil of the present invention.

3 is a transverse cross-sectional view of stormwater in this article.

Explanation of symbols for important parts of the drawings

1. Sewage Inlet 1-1. Waterway wall

2.

3. Overflow prevention jaw

4. Opening and Closing Cover 4-1. Fixing Plate 4-2. Hinge 4-3. Foundation bolt

4-4. Salvage collar

5. Metal grid

6. Entrance to Tea House

7. House box

8. House pipe

A sewer inlet (1) with a flat bottom is formed in the sewer (4-sided sewer) to deposit sand on the floor. In the lower center of the collecting box (7) was installed a collecting pipe (8).

On the upper side of the collecting pipe passage 6, an opening and closing cover 4 having a sloping incline is installed on the downstream side, and the opening and closing cover 4 is fixed by a hinge 4-2 at the end thereof so as to allow rotation. ) And fixing plate (4-1) is firmly fixed to the bottom of the sewer inlet (1) with a foundation screw (4-3).

On the downstream side of the opening and closing cover (4) to form a water collecting channel (2) having an inclined downward and the appropriate length to facilitate the flow of sand, and the end of the overflow prevention jaw (3) was installed at the end.

At the downstream end of the opening and closing cover 4, the metal lattice 5 is formed integrally with the opening and closing cover 4 so as to be vertical at equal intervals, and a lifting ring 4-4 is formed at the ?? unit of the opening and closing cover 4. Formed integrally.

The action of rainwater tosyl is as follows.

Usually, when the sewage flows less, the sand in the sewage is deposited by depositing in the sand sediment formed at the bottom of the sewer inlet (1) and the height of the opening and closing cover (4), and the sewage is passed downstream of the opening and closing cover (4). It flows back through the collection channel 2 and flows to the collection pipe line inlet 6 until it reaches the height of the overflow prevention jaw 3 and flows into the collection pipe line 8 through the collection box 7.

When it rains and rains a lot, rainwater and sewage are mixed, and a lot of water flows into the sewer inlet (1), and the flow rate increases, and sand flowing by sand and rainwater deposited on the floor flows downstream with the sewage. Flows beyond).

Sand has a greater specific gravity than water, so when the flow velocity increases, the inertia force is large, so the flow velocity is slower, and the flow direction is much more downstream along the sewer channel (2) with the downward slope than that of the collecting pipe entrance (6). A lot will flow out.

In addition, floating suspended matters are more generated in rainy weather than usual. Floated floating matters flow down near the surface due to their low specific gravity, so that they rarely enter the metal grid 5 below the surface of the water.

As such, in the rainwater silos of this paper, only a little sand and floating contaminants enter the rainwater pipe line 8 in rainy weather, and all the facilities are installed in the sewer, so there is no need for a separate site for installing rainwater sills outside the waterway.

If sand or the like is deposited on the metal lattice 5 or the collecting box 7 after a long period of use, a ring (not shown) is attached to the lifting hook 4-4 formed integrally with the opening and closing cover 4. You can walk up and clean it.

The rainwater toss in this paper shows that the flow velocity of sewage canal (A) and sewage canal (1) is fast and the flow direction to sewage canal (2) is the flow direction of the sewer and sewage canal (1) and the reverse flow direction. The flow rate of the sump channel 2 is slowed down so that most of the sand in the sewage flows to the downstream side by inertia, so that no sand flows into the sump channel 8, and the floating sewage in the sewage is opened and closed. It is caught by the metal grid (5) installed perpendicular to the end of the do not flow into the collecting pipe (8).

In addition, since all facilities such as the opening and closing cover 4 are installed in the sewer, there is no need for a separate site.

Opening and closing cover (4) can be rotated up and down, so when cleaning is required, it is very convenient to clean after lifting.

In addition, due to the action effect of stormwater in this paper, the inflow of sand and suspended contaminants is drastically reduced in the sewage treatment plant, thereby reducing efforts to remove them and preventing obstacles caused by the inflow of sand.

Claims (1)

A sewer inlet (1) is formed in the sewage canal (A), and a sewer flow barrier (3) with a gentle slope is installed at the far end of the sewer inlet (1), with a downward slope between them. (2) and install the collecting pipe passage entrance (6), the collecting box (7), the collecting pipe passage (8) at the bottom of the front of the collecting canal (2), and upwardly inclined upward to the downstream of the collecting box (7). The opening and closing cover 4 is connected to the fixing plate 4-1 by the hinge 4-2, and the fixing plate 4-1 is firmly fixed to the bottom by a basic screw 4-3 and the opening and closing cover 4 One end of the storm drainage system of the combined sewer, characterized in that the metal grid (5) is installed vertically.