JPS594753Y2 - Water tank type residue storage and supply device - Google Patents

Description

[Detailed description of the invention] The present invention relates to a storage and supply device for sludge collected from sewage or rainwater at sewage treatment plants, pumping stations, etc., and in particular, a water tank type for collecting sludge and supplying it to sludge cleaning equipment. This invention relates to a storage supply device.

Sludge collected from sewage and rainwater is transported to a landfill or incinerator site for final disposal.

However, collected residue contains filth and generates a bad odor, which poses problems such as contaminating the environment during transportation to a final disposal site, and in recent years there has been an increasing need to clean the residue.

If the dust removal equipment that collects the residue is installed in a remote location, transport it using a dump truck, etc. to the solution storage and supply device attached to the solution cleaning device, and then use the solution storage and supply device to collect the residue. Generally, a method is adopted in which the residue is continuously supplied to the cleaning device.

FIG. 1 is an explanatory diagram of a conventional mechanical liquid storage and supply device.

The residue transported by a dump truck or the like is transferred to a storage hopper 1 installed in an underground pit 4.

A chain conveyor type scraping device 2 is attached to the lower part of the storage hopper 1.

This scraping device is installed on the ground, and a liquid cleaning device (not shown) is installed on the ground.

) is connected via a chute to a supply conveyor 3 for supplying the residue.

However, this conventional mechanical solution storage and supply device has many drawbacks as described below.

(1) The underground structure will become larger due to the space needed for installation, inspection, transfer, and cleaning.

(2) The atmosphere in the underground space deteriorates due to odor, humidity, leachate, etc.

(3) The residue gets entangled with the dispensing device, such as the cheno, making it impossible to convey it.

(4) Repair work and inspection when the dispensing device breaks down are complicated.

SUMMARY OF THE INVENTION An object of the present invention is to provide a liquid storage and supply device that eliminates the above-mentioned drawbacks.

FIG. 2 is an explanatory diagram of the water tank type liquid storage and supply device of the present invention.

Hereinafter, the configuration of the present invention will be explained with reference to FIG.

That is, there is one water tank for storing and supplying scum (hereinafter referred to as a storage hopper).

). In the storage hopper 1, a screen 5, a scraping device 2, and a partition plate 6 having an open bottom on the back side of the scraping device 2 are arranged.

A pressurized air or pressurized water supply port is provided at the bottom of the water tank 1b on the opposite side to the input side, which is partitioned by the partition plate 6, and the water tank 1b is
A water channel 8 is provided which communicates the input side of the water tank 1a with a water tank 7 that receives overflow water from a sink tank 1b provided in contact with the water tank 1b.

In addition, 10 is a drain, 11 is a treated water inlet, and 12 is a drain.
3 shows the aeration air supply ports, and 3 shows the sludge cleaning device (not shown).

).

The operation of the present invention will be explained below.

The residue transported by a dump truck or the like is put into a storage hopper (water tank) 2.

The water in storage hopper 1 uses treated water, and the water level is always constant H.
It is held at 1.

The water tank 1a and the water tank 7 communicate with each other through a water channel 8, and the water tank 1a and the ice tank 1b also communicate with each other through the screen 5 because the lower part of the partition plate 6 is open.

Due to this, the water levels are all the same when pressurized air 9 is not supplied.

When operating, that is, to explain the operating state, the water tank 1a
When the persimmon residue is introduced and the aeration air 12 is supplied, the persimmon residue mixes with the water in the water tank 1a, and a cleaning action of the persimmon residue occurs.

On the other hand, when pressurized air 9 is supplied from below the water tank 1b which is partitioned from the water tank 1a to above the water surface by the partition plate 6, the water level becomes H2, which is higher than the water level H1 of the water tank 1a.

Although the volume of the water itself in the partitioned aquarium 1b does not change,
The pressurized air 9 is vented upward.

That is, when air moves toward the lower pressure atmosphere, the apparent water volume increases.

At the moment when the pressurized air 9 is discharged, the size of the air bubbles is relatively small due to the water pressure, but as it gets closer to the water surface, the air bubbles become larger.

However, the upward movement of the air bubbles is restricted by the partition plate 6 and is limited to the inside of the water tank 1b.

The water in the aquarium 1b that contains air bubbles and has an increased apparent water volume is a phenomenon in which only the depth direction of the water increases, that is, the water level H2 increases, while the volume of the aquarium 1b remains unchanged.

Pressurized water 9 is supplied to the water tank 1b, and when the water level reaches H2, the movement of water in the water tanks 7, 1a, and 1b becomes active.

The water level H2 in the tank 1b is pushed up by pressurized air or pressurized water supplied from the bottom and becomes higher than Hl, and the water in the tank 1b overflows into the tank 7 and flows into the tank 1a through the water channel 8.

The pressurized air is supplied by a separately provided blower or by throttling aeration air.

The mobility of the input sludge increases due to buoyancy, so
The water is swept toward the screen 5 by the water flow described above, is continuously collected by the scraping device 2, and is supplied to the cleaning device (not shown) by the supply conveyor 3.

After continued operation for a certain period of time, the water being recycled becomes contaminated.

In this case, the drain 10 is opened and the dirty water is drained to a settling basin or the like, and new treated water is supplied.

Furthermore, it is also possible to promote fluidization and aerobicization within the water tank 1a by using air from the aeration air supply port 12.

As explained above, the effects obtained by the structure and operation of the present invention are as follows.

(1) Less energy is required to move the residue than in conventional mechanical systems.

(2) Since buoyancy acts on the sludge, no strain is placed on the raking mechanism.

(3) Since the residue can be easily moved, there are fewer restrictions on the positioning of the loading section and the unloading section.

(4) There is a preliminary cleaning effect due to the moving water, and the main cleaning method can be simplified.

(5) Since no underground space is required for installation, maintenance and inspection, the civil engineering structure can be small and simple.

Therefore, the present invention is judged to have sufficient industrial utility value.

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BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an explanatory diagram of a conventional mechanical liquid storage and supply device. FIG. 2 is an explanatory diagram of the water tank type liquid storage and supply device of the present invention. 1: Water tank (storage hopper), 2: Sweeping device, 8: Water channel, 9: Pressurized air or pressurized water supply port, 12: Aeration air supply port.

Claims (1)

[Claims for Utility Model Registration] (2) A partition plate 6 with an open bottom is provided on the back side of the scraping device 2 of the aquarium 1 provided with the screen 5 and the scraping device 2, and the partition plate 6 is used to divide the water tank 1 into Water tank 1b
A water tank type liquid storage and supply device characterized in that a pressurized air or pressurized water supply port 9 is provided at the bottom of the water tank, and the overflow water from the water tank 1b is returned to the water tank 1a on the sludge input side. 2. The water tank-type liquid storage and supply device according to claim 1, characterized in that an aeration air supply port 12 is provided at the bottom of the water tank 1a.