JPS5925448Y2 - Odor prevention closure device for sand settling basins - Google Patents

Description

[Detailed explanation of the device] This device is designed to remove bad odors from a sedimentation pond where the inflow prefecture and the sedimentation basin are directly connected, so that the inflow prefecture and the sedimentation basin are The present invention relates to an odor-preventing closing device for a sand settling basin, which is capable of efficiently sucking only the bad odor sealed in the settling basin by blocking the air.

With the spread of sewage systems, deodorization measures have become indispensable in recent years, but when considering deodorization in sand settling basins, it is important to efficiently remove bad odors from the source, that is, to suck odors at a high concentration with a small air volume. It is important to guide the product to a deodorizing device.

In particular, the sand settling basin was directly connected to the inflow prefecture, and had the disadvantage that attempting to suck up the bad odor inside the settling basin would also suck in the foul odor inside the inflow culvert.

In particular, an opening/closing gate is installed in the inlet channel connecting to the sand settling basin to stop the inflow of sewage, but it is not possible to completely seal the air to close off ventilation, and the water level changes constantly, so the space above the water surface must be completely airtight closed. It was technically extremely difficult to do so.

This idea addresses these conventional shortcomings.
The feature is that a movable shielding plate is attached to a float and provided in a space communication section above the water surface between the inflow prefecture and the settling basin.

The details will be explained below with reference to the embodiments shown in the drawings.

1 is a sand settling basin directly connected to the inflow prefecture 2, and 3.3' is an airtight cover that covers the entire open upper part of the basin.

The airtight covers 3 and 3' are provided with a suction pump 4 and a deodorizing device 5 connected by a vibro, and when the pump 4 operates, the odor in the settling basin 1, which is hermetically sealed with the cover, is sucked out and the deodorizing device 5 is installed.
It is designed to be released outside through the process.

Reference numeral 8 denotes a shielding plate that is movable up and down in the space communication section 7 above the water surface between the inflow prefecture 2 and the settling basin 1, and is fitted into concave guide grooves 9 and 9' provided on the opposing walls. and move up and down using it as a guide.

The shielding plate 8 penetrates the slab 10 and protrudes upward, and is covered with a hood 11 which also serves as a guide so that bad odor does not leak outside through the gap.

Reference numeral 12 denotes a float that responds to fluctuations in the water level a, and is floated on the surface of the wastewater, on which the above-mentioned shielding plate 8 is attached.

The floats 12 may be horizontally long integral pieces, but as shown in the illustrated example (Fig. 3), two floats 12 may be provided facing each other on both the left and right sides.
It is preferable that the shielding plate 8 is installed so as to bridge over it.

A guard 13 is also provided on the float 2 to prevent incoming garbage from getting entangled.

The material of the shielding plate 8 is preferably made of synthetic resin such as FRP in order to reduce its own weight, but even so, if it is large, it will have a considerable weight, so in such a case, it is shown in Fig. 4. If a weight 15 is suspended from the upper end of the shielding plate 8 with a rope 16 via a pulley 14, a part of its own weight can be borne.

A gate 17 reaching from the upper water surface to the bottom of the settling basin is provided at the inlet to the settling basin 1.
is provided, so even if the gate 17 is opened and the upper part of the water surface is in a communication state, the space communication part above the water surface is completely blocked, and even if the water level a increases or decreases, it will not be blocked. The plate 8 reacts together with the float 12 to keep the communication portion 7 closed and closed at all times.

As mentioned above, this idea is to provide a shielding plate that can be raised and lowered in the space communicating above the water surface between the inflow channel and the settling basin, and to attach the shielding plate to a float that responds to fluctuations in water level. Therefore, the odor sealed in the settling basin can be efficiently sucked into the suction device at a high concentration, and the space above the water surface to the inflow channel is always blocked to respond to changes in the water level together with the float. A situation in which bad odor from the beam side is sucked through the settling basin is reliably avoided, and the power required for the suction device is therefore reduced, and since the bad odor from the settling basin does not spread to the inlet beam side, the inside of the inlet drain is It can reduce bad odor.

Furthermore, the structure is simple, easy to implement, and practical effects such as implementation at low cost can be expected.

[Brief explanation of drawings]

Figure 1 is a longitudinal cross-sectional side view of the settling basin in which this idea was implemented, Figure 2
3 is a cross-sectional plan view of the same, and FIG. 4 is a longitudinal cross-sectional side view of a shielding plate portion showing another embodiment. 1...Sand basin, 2...Inlet drain, 3...
...Cover, 4...Suction device, 5...
... Deodorizing device, 7... Space communication section, 8...
...Blocking plate, 9...Guide groove, 12...Float.

Claims (2)

[Scope of utility model registration request] (1) In a settling basin facility that uses a suction device to remove odors in a settling basin that is directly connected to an inflowing prefecture, a vertically movable shield is installed in the space communicating above the water surface between the inflowing prefecture and the settling basin. A deodorizing blocking device for a settling pond, characterized in that a closing plate is provided and the blocking plate is attached to a float that responds to fluctuations in water level. (2) The odor-preventing and closing device for a sand settling pond as set forth in claim 1, wherein the float is provided with a guard to prevent entanglement of inflowing debris.