JP2606393Y2 - Scum removal equipment for circular sedimentation basins, etc. - Google Patents

Description

[Detailed description of the invention]

[0001]

[Industrial application] This invention is applied to circular sedimentation ponds and the like.
The present invention relates to a scum removing device .

[0002]

2. Description of the Related Art For example, in a circular or square sedimentation basin provided in a water supply or sewage treatment plant, a large amount of sludge and the like settles at the bottom of the pond, and this is collected and treated.

[0003]

[Challenges devised to solve the above is far along in Ikezoko
The outer diameter of a pair of rakes (sludge collection rotating members)
The rake can be driven continuously.
And collect the sediment to the central collecting section
I have to. In this case, build a walkway on the pond,
A motor with a speed reducer was installed in
Attach a large rotating shaft to the deceleration output shaft,
Equipped with the rake around the axis to rotate and drive
Was. According to this, the whole device is very large.
Becomes a thing, construction also become very Der Rutotomoni high cost
I was

[0004]

According to a first aspect of the present invention, a circular sedimentation basin or a square sedimentation basin is formed such that the bottom of the basin is formed in a downwardly narrowed shape. A sludge collecting section is formed in the center of the bottom in a concave shape, while a submersible motor is provided above the center of the collecting section.
Equipped with different outer diameters along the pond bottom from the same center
A pair of sludge collecting rotating members extending in the direction and settling at the bottom of the pond
And a sludge guiding means for sending sludge to the collecting section.
So that sludge from the pond bottom is dropped into the collection section.
In the formed circular sedimentation basin, etc.,
From the front end, the pillars are erected and
Scratch the scum floating on the water surface between these columns in the circumferential direction.
The scum scraping plate to be approached is mounted.
You .

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the illustrated embodiments. FIG. 1 shows one embodiment. In this example, reference numeral 30 denotes a peripheral wall, 31 denotes a bottom wall having a constricted shape downward, 32 denotes a central collecting unit, and 33 denotes a collecting unit 32.
In the settling basin, a water pipe 34 is passed through a collection unit 32, and a submersible pump 35 driven by a vertical motor 36 is disposed on the water supply pipe 34. It is provided rotatably.

[0006] The submersible pump 35 has two water supply pipes (sludge collection rotating section) extending parallel to the bottom wall 31.
Material 37 is attached and is rotatable together with the submersible pump 35. This pipe 37 has a plurality of nozzles (dirty).
Are attached so that the sludge accumulated on the bottom wall 31 is sent in the direction of the collecting section 32. For this purpose, nozzles 38 for rotating the pipe 37 itself by water injection and sending the sediment on the bottom wall 31 to the collecting unit 32 are attached to the pipe 37 at an angle.

In addition, a microorganism supply pipe and / or an air supply pipe may be provided in addition to the pipe 37. The air injected from the air supply pipe activates purification and also cuts off an oil layer extending over the water surface. There is also an effect that the oil layer or the suspended matter can be easily separated to precipitate.

Reference numeral 40 denotes a stay, on which a plurality of petal-shaped guide plates 41 are arranged in an inclined manner. The guide plates 41 ... is guided downward along precipitate descends from above the surface, collecting portion 3
Send up to two . A guide 44 may be provided in the nozzle 38 so that the water jet from the water supply pipe 37 is attached to the bottom wall 31 to change the flow direction. In addition, a pipe-like column 45 is erected from the water supply pipe 37, and a scum scraping plate 46 is provided between the columns, and the scum scraping plate 46 can be simultaneously rotated.
It is . In this case, the support wall 45 may be provided with nozzles 47 to clean the peripheral wall 30.

As shown in FIG. 3, the guide plates 41 may be arranged vertically apart from each other so that the lower one comes between the upper ones so that all the precipitates can be guided.

[0010] Figure 2 is a additional proposals example, 50 in the water supply pipe, the on extending direction nozzles 51 ... are mounted, the nozzle 51 ... are adapted to the pipe 50 can be driven to rotate by the injection ing. In addition to the pipe 50, microorganisms and / or air supply pipes may be disposed vertically and circumferentially.

[0011]

[Effects of the Invention] The invention is as described above. The bottom of a circular sedimentation basin or a square sedimentation basin is formed to have a downwardly constricted shape, and a sludge collection part is formed at the center of the bottom of the basin. While formed in a concave shape, a submersible motor is provided above the center of the collection unit, and it is attached to the bottom of the pond from the center.
A pair of sludge collecting rotations extending in different directions of the outer diameter
Sludge induction to send sludge settling on components and pond bottom to the collection section
The sludge at the bottom of the pond is returned to the collection section by rotating the
In the circular sedimentation basin or the like that is configured dropped, before
Supports are provided upright from the outer radial end of the rotating member.
And the space between these pillars
A scum scraping plate that scrapes the cam in the circumferential direction is mounted.
According to this one,
・ Overall equipment that has both collection function and scum scraping / removal function
Has a very simple structure, and installation work is very simple.
A simple and cost-saving device
Can now be provided .

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a scum removing device showing one embodiment of the present invention.

FIG. 2 is a plan view showing an additional proposal example .

FIG. 3 is a plan view showing another embodiment of the guide plate.

[Explanation of symbols]

31 bottom wall 32 collection part 35 submersible pump 36
Submersible motor 37,50 Water supply pipe (for collecting sludge
Rotating member) 38, 51 nozzle (sludge guiding means) 4
5 Prop 46 Scum scraper

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B01D 21/24 C02F 3/20

Claims (1)

(57) [Scope of request for utility model registration] 1. The bottom of a circular sedimentation basin or a square sedimentation basin is formed to have a downwardly constricted shape, and a sludge collection part is formed in the center of the bottom of the basin in a concave shape.
An underwater motor is installed in the upper center of the collecting section.
From the same center along the bottom of the pond in different radial directions.
A pair of rotating sludge collecting members and sludge settling at the bottom of the pond
By rotating and driving the sludge guiding means to be sent to the collection unit
It was configured to drop sludge from the pond bottom into the collection section
In a circular sedimentation basin, etc.
And others, each of which has its own column,
A scum that sweeps the scum floating on the water surface in the circumferential direction between the pillars
Circular sediment characterized by a cam rake plate mounted
Scum removal equipment for ponds and the like .