JPS6369513A - Sand basin installation - Google Patents

Abstract

PURPOSE:To remove and discharge sands as well as scums floating in a water stream, by providing a scum removing bar screen in front of a chain in a sand scraping-up conveyer and providing claws to the backets provided to a chain to comb through between the bars of the bar screen. CONSTITUTION:A scum removing bar screen 30 is provided to the upward moving part 18 of the chain 2 of the settled sand scraping-up conveyer so as to be brought into contact with the chain 2, and numerous claws 31a to comb between bars 30a of the bar screen 30 is provided to backets 31 installed to the chain 2. The scums in the water stream flowed into the sand basin are caught by the scum screen 30 and combed by the claws 31a of the backets 31 and discharged with the sands in the backets to the outside. Thus the scum removing function is integrated with the scraping-up function of settled sands into one unit, and the required area for the sand basin as well as the cost for the installation of the sand basin are reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to improvements in settling basin equipment for sewage treatment plants.

[Conventional technology]

Figure 3 is a partial cross-sectional side view of a settling basin in a conventional sewage treatment plant, where (1) is the settling basin, (2 is the chain, (3) is the bucket, (4) is the sprocket wheel, and (5) is the arm. ,(
6) is the arm lifter, (7) is the rotating shaft, (8) is the drive shaft, (9) is the motor, αQ is the pick-up, (1υ is the belt conveyor, Oz is the screen, azuki screen, α4) is (15) is a belt conveyor, (
16) is an arrow indicating the 8 movement directions of the chain, α7) is the horizontal movement part of the chain, α is the upward movement part, the scream is the water flow, the base is the sand, and 21) is the water surface.

The sewage is introduced as a stream (2) and first passes through the screen (
After the floating wood and plastic debris are removed by the sand sink (1), they flow into the settling basin (1). Since the sand basin (1) has a large cross-sectional area and the water flow (2) has a low flow velocity, the sand in the water flow α0 settles and is deposited on the ground. The water flow where the sand has been settled and removed is marked α, and the floating matter in the water stream (marked θ) is
After removing the residue), it flows into the next step. The sludge collected on the sludge screen is scraped up by a sludge scraper α and discharged outside the site by a belt conveyor (1υ).

To discharge the sand piles accumulated on the underground, move the engine equipped with the bucket (3) 8 in the direction of arrow 06).
Scrape up the sand from the underground and carry it upwards with the bucket (3).
A belt conveyor (1υ) is used to discharge the sand out of the site.The chain (2) is driven by a drive shaft (8) driven by a motor (9).The surface height of sand piles deposited on the ground changes over time. Therefore, operate the arm lifter (6) and rotate the arm (5) @h (7) as the glaze and move it in parallel as shown by the dashed line so that the bucket (3) can always scrape off the accumulated sand. Adjust to

[Problem that the invention seeks to solve]

By the way, in the above-mentioned sand settling basin equipment, the equipment for scraping and discharging the settled sand and the equipment for collecting and discharging the sludge are arranged separately and operated separately. As a result, the area required for the sand settling basin becomes larger and the overall equipment cost increases.Therefore, in order to reduce the equipment cost, it has been a matter of concern to integrate both of the above-mentioned functions.

In response to the above-mentioned needs, the present invention aims to provide equipment that integrates the functions of sand removal and sand removal in a sand settling basin.

[Means for solving problems]

In order to achieve the above object, the present invention provides a sand scraper for a sand settling basin, in which a bar screen for removing pickling is provided in front of the chain in the upward moving part of the chain, and the bar screen is attached to a bucket attached to the chain. Equipped with a claw that can be inserted between the bars.

[Effect]

Since the sediment scraper for the sand settling pond is constructed as described above, the sand sediment scraper can remove and discharge not only the sand deposited on the pond bottom but also the sediment floating in the water flow.

[Embodiments of the invention]

FIG. 1 is a block diagram of a sand settling and scavenging machine showing one embodiment of the present invention, and FIG. 2 is an enlarged view of the main parts thereof. (1) in the diagram
QD has the same parts as the conventional device, □□□ Hashizuke screen,
(30a) is a screen bar, mortar υ is a bucket with a claw, (31a) is a claw, and (2) a pickle.

As shown in the figure, a dipping screen (support) is provided on the upward moving part side of the chain, and a large number of claws (support) are inserted into the bucket (31) between the screen bars (30a) of the screen (support). As a result, the sludge (2) floating in the water flow α9 that has flowed into the settling basin (1) is collected by the sludge screen ■υ, and is then transferred to the bucket claw (31a).
) is scraped by the belt conveyor (lυ), and the bucket (1)
The belt conveyor (11) transports the sand together with the sand to the outside.

The claw (31a) is the residue (2) collected by the screen (2).
In addition to scraping off the sand, we also put a bucket of sand that has accumulated on the bottom of the pond.
- It is also convenient when storing by scraping with (31).

The structure and material of the claws (31a) are not limited to those of the above embodiments, but should be appropriately determined according to the specifications of the sewage flowing into the settling basin.

〔Effect of the invention〕

The present invention integrates a sediment scraping machine and a sludge treatment machine in settling basin equipment for sewage treatment, making it possible to simplify the specifications of the settling basin equipment and to significantly reduce the area required for the settling basin. As a result, we were able to achieve the excellent effect of reducing the construction and operating costs of the settling basin.

[Brief explanation of the drawing]

Fig. 1 is a configuration diagram of a sand settling and scraping machine which is an embodiment of the present invention, Fig. 2 shows its main parts (a) is an enlarged side view, (b) is an enlarged plan view, and Fig. 3 is a FIG. 2 is a side view of a conventional sand settling basin. In the figure, (1) is the sand settling basin, (ri is the chain, (17) is the horizontal moving part of the chain, (1 mark is the upward moving part, (2) is the water flow, the handle is the sand, ((1) is the chain, and (1) is the horizontal moving part of the chain. Inspection screen, (30a)
is the screen bar, mortar υ is the bucket, (31a) is the claw of the bucket, and ((5) is Hashikiyo. Agent: Patent Attorney Masashi Sato Kichikon Motion Department 18: Child Eino's Kamigatabo Kanne p 19: Mizuryu 20:? 30 Niji Ishi Screen 30q Nishi Screen 8- 32 Niji Jei No. 2vA (a) Proceedings Amendment (Spontaneous) 1986 12
4 days

Claims (1)

[Claims] In a sediment scraper for a settling pond in a sewage treatment plant, a sludge screen is placed in contact with the chain in the upward moving part of the chain, and each bucket has a claw for scraping off the sludge collected on the screen. A sand settling basin equipment characterized by being attached to.