JPH0440792Y2 - - Google Patents

Description

[Detailed explanation of the idea] [Technical field of invention] This invention relates to a scum removal device.

[Technical background]

The sedimentation basin is equipped with a scum removal device that attracts and removes scum floating on the water surface, and one means of this is to fix a trough and separately provide a damming member in front of it so that it can move up and down.

The dam member has a float, but conventional scum removal devices tend to be quite large-scale, which increases costs and has poor workability.

[Purpose of invention]

In order to solve the above problems, the object of this invention is to provide a scum removal device that can be made compact, reduce costs, and improve efficiency of construction.

In particular, the purpose is to maintain watertightness for a long period of time so that unnecessary water does not flow into the trough, and to prevent malfunctions due to foreign substances such as scum.

[Disclosure of invention]

In order to achieve the above object, this device is provided with a dam member that can move up and down on the front side of a fixed trough, and the dam member is submerged under the water surface by a holding means, while a part of it is above the water surface by a buoyancy means. In the scum removal device, the damming member is configured to rise and appear on the water surface to dam the scum on the water surface, and a sealing means is provided between the damming member and the trough. The buoyancy means is elastically deformable, and includes a front part facing the section from the rear, a rear part facing the front part of the trough from the rear, and an upper part joining the front part and the rear part on the upper side, and the buoyancy means is elastically deformable. The float is formed in a hollow shape from a material of: do.

〔Example〕

This invention will be explained below with reference to the drawings.

As shown in FIG. 1, 1 is a trough, which is a long gutter-like structure and is fixedly installed so that its front portion 1a is below the water level 5. The front portion 1a of the trough 1 is provided with a damming member 14 that is movable up and down, and the member 14 is submerged below the water surface 5 by a holding means (not shown), while a portion thereof rises above the water surface by a buoyancy means. The dam is constructed to dam the scum appearing on the water surface 5, and a sealing means is provided between the damming member 14 and the trough 1.

The dam member 14 is located at the trough front portion 1a.
The buoyancy means includes a front surface portion 14a facing from the front, a rear surface portion 14b facing the trough front portion 1a from the rear, and an upper surface portion 14c connecting the front surface portion 14a and the rear surface portion 14b on the upper side. is a float 4 made of an elastically deformable material and formed in a hollow shape, and also serves as an elastically deformable sealing means that is attached above and below the dam member 14 between the front part 14a and the trough front part 1a. It is characterized by being interposed.

The upper surface portion 14c is a scum guide surface that slopes downward toward the trough 1.

The state shown in Figure 1 is a dammed state, and the front part 1
4a dams the water surface 5. This state is obtained by raising the dam member 14 by the float 4 returning to its natural state, and the upper part of the dam member 14 is exposed above the water surface 5.

The imaginary line in FIG. 1 shows the scum flowing in, and the damming member 14 is pressed down by a pressing means (such as a cylinder) not shown, so that the damming member 14 is submerged below the water surface 5 with elastic deformation of the float 4.

During the entire cycle, including the period during which the damming member 14 moves up and down, the float 4
4 and trough 1 exhibits a watertight effect due to its elasticity. Since water pressure is applied to the damming member 14 from the front, the float 4 moves up and down while being constantly pushed in the direction of the trough 1. By this,
Water intrusion from below is completely prevented. Between the dam member 14 and the float 4,
It is always completely blocked by the water pressure and the impact force of the float 4.

[Effect of idea]

This idea is as described above. Therefore, watertightness is maintained for a long time and unnecessary water does not flow into the trough, making post-treatment extremely easy and preventing malfunctions caused by foreign substances such as scum. It became. Since there is no sliding movement between the dam member and the trough, the operation is easy and no malfunction occurs.

[Brief explanation of drawings]

FIG. 1 is a schematic side sectional view showing an embodiment of this invention. DESCRIPTION OF SYMBOLS 1...Trough, 1a...Front side part, 4...Float, 14...Damming member, 14a...Front part, 14b...Rear part, 14c...Top part.

Claims (1)

[Scope of utility model registration request] A damming member that is movable up and down is provided on the front side of the fixed trough, and while the damming member is submerged under the water surface by the holding means, a part of it rises above the water surface and appears above the water surface by the buoyancy means to remove the scum on the water surface. In the scum removal device, the damming member is configured to dam the trough and is provided with a sealing means between the damming member and the trough, and the damming member has a front portion facing the front portion of the trough from the front, and a scum removing device configured to dam the trough. The buoyancy means is a float formed in a hollow shape from an elastically deformable material. A scum removing device characterized in that the scum removing device is interposed between the front surface portion and the front portion of the trough along with the upper and lower portions of the dam member and also serves as an elastically deformable sealing means.