JP2562010Y2 - Scum removal device - Google Patents

Description

TECHNICAL FIELD The present invention relates to a scum removing device.

[Technological background]

FIG. 8 shows a scum removing device created earlier by the present applicant. In the device, a weir 15 having a water-following float 14 is arranged in front of a trough 13, and the weir 15 is provided with a roller 16.
The vertical movement along the front surface of the weir 15 is thereby performed. This device normally keeps the water surface 17 blocked, and when necessary, the weir 15 is pushed down so that the scum on the water surface 17 is introduced into the trough 13 together with the water and removed by the outflow pipe 18. .

[Problems to be solved by the invention]

By the way, according to this device, the stroke S is 300 to 5
It can be as large as about 00. However, according to the device, since a large water pressure is applied to the front surface of the weir 15 at times other than the removal of the scum, an attempt to open the weir 15 at the time of removing the scum requires a force to open the weir 15, and a balancer device or the like is added. And the structure becomes complicated. As a result, it is not preferable because the cost cannot be satisfied.

In order to solve the above-mentioned problem, the present invention aims to make it possible to remove scum by following a largely fluctuating water surface and to provide the scum structurally simple and inexpensively. It is an object of the present invention to ensure a reliable and smooth operation without scum accumulation inside.

[Means for solving the problem]

In order to achieve the above object, the present invention is directed to a fixed trough having a gutter shape with an open top and one side serving as a scum inflow side, and a trough close to a front surface on the scum inflow side of the trough. A water flow regulating weir that is provided and can be moved up and down along the front of the trough, and a float that keeps the water flow regulating weir at a height that can always swallow the scum of the water surface while following fluctuations in the water surface An opening / closing mechanism that temporarily holds scum and water flowing over the water amount regulating weir, and an outflow path that is provided in communication with the trough and guides the temporarily held scum and water to the outside of the trough by opening the opening / closing mechanism. Wherein the opening and closing mechanism is arranged so as to partition the inside of the trough, so that it can move up and down along the damming surface as an opening direction and a downward direction as a closing direction. Vignetting wherein the are.

〔Example〕

Hereinafter, the present invention will be described in detail with reference to the illustrated embodiment.

1 to 4 show an embodiment of the present invention. The sedimentation basin has a two-layer structure with upper and lower layers. The outline thereof is described below. A plurality of overflow weirs 22 are arranged near the water surface 21, 21 of each pond so as to face the water surface 21, respectively.
This device as shown in detail in FIG. 3 is provided in part A of the settling pond on the upper floor.

This apparatus is provided with a fixed trough (existing) 24 having an open upper side and a gutter shape on one side of a vertical wall 23. Although this trough 24 is provided for each settling basin as shown in FIG. 1, an opening / closing mechanism (comprising a weir and a rod) 25 provided near the end of each trough 24 is provided. When opened, the scum and water flow into a common outflow pipe (outflow path) 26 in communication with each other.

The blocking surface of the opening / closing mechanism 25 is a vertical surface, and the weir performs opening / closing motion in a vertical direction along the blocking surface.

A seal 27 is provided at the upper part of the front surface of the trough 24, and a water amount regulating weir 28 is provided at the front of the trough 24 so as to vertically move up and down along the front surface. The up and down movement of the weir 28 is guided by a guide (not shown), and a float 29 is attached to the front upper end of the weir 28. The float 29 extends in the width direction of the pond and is always positioned below the water surface 21. As shown in FIG. 4, the water flow regulating weir 28 is formed such that the inflow port 30 is always formed in a concave notch. The depth formed by the inlet 30 with the water surface 21 is h. In front of the float 29, auxiliary floats 31, 31 are arranged so that there are two on the left and right, and on the upper part,
A tank 34 is provided so that water from a water supply pipe 33 with a valve 32 is supplied as needed. The water in the tank 34 is removed from a drain pipe 36 with a valve 35. As required, to increase the amount of inflow into the trough 24,
This is a case where h is increased by sinking the auxiliary float 31. The case where water is excluded from the drain pipe 36 is a case where the above-mentioned h is reduced to narrow the inflow amount. An arm 37 and a roller 38 are provided from the float 29 or the weir 28 so as to ensure a vertical movement while limiting the inclination of the weir 28 to a constant value. When the roller 38 hits the wall 23, the seal
When weir 28 hits 27, water should not enter from below.

The weir 28 can move up and down greatly under the maximum stroke S of the float 29. Closed open / close mechanism where water from the pond always flows in with scum from the constant inlet 30 of the weir 28
The water is temporarily held in the trough 24 in front of the weir 25, and the inflow stops when the inside of the trough 24 becomes the same as the height of the water surface 21. When the opening / closing mechanism 25 is opened by lifting, not only the scum and water in the trough 24 reserved as described above but also the scum and water that have passed through the weir 28 are removed through the outflow pipe 26.

In this way, since water always flows in and water exists before and after the weir 28, no pressure is applied to the weir 28 when the weir 28 moves up and down,
It comes up and down lightly. When removing scum
The opening / closing mechanism 25 is opened and pulled out of the inflow pipe 26.

Since the opening / closing mechanism 25, which is a weir for temporary holding, moves up and down in the direction along the damming surface, scum and water temporarily held before the opening and closing mechanism 25 are used to open the weir. Accordingly, the scum flows smoothly and reliably into the outflow pipe 26, so that there is no risk that the scum will stay and solidify before the weir due to the repeated scum removing operation, and the movement of the weir will always be reliable and smooth.

FIG. 5 shows an additional example. This example
A communication pipe 41 is provided in front of the trough 40.
Is provided. An auxiliary trough 43 is provided in front of the communication pipe 41.
Is attached. The trough 43 has floats 44,44
An attached weir 45 is provided to be vertically movable. Auxiliary floats 46, 46 are attached to this weir 45. The weir 45
In addition, a notch-shaped regular inflow port 47 is also formed. In this way, it is possible to flow in not only from one direction but also from both directions.

Each of the floats can be as shown in FIGS. 6 and 7. The float (for example, an auxiliary float) is provided with a tank so that the amount of h can be changed.
As shown in these figures, the first and second floats 50 and 51 may be configured to be freely foldable. These floats 50 and 51 are connected by a hinge 52, and a pin 53 is detachable from the other party. By removing the pin 53 from the other side, one float rides on the other float. Thereby, the float in the state shown in FIG. 6 becomes the float in the shallow floating state shown in FIG. As a method of changing the h amount, water may be directly injected into the float.

[Effect of the invention]

Since the present invention is configured as described above, the scum can be removed by following the water surface which fluctuates greatly, and the scum can be provided structurally simply and at low cost.

In particular, since the opening / closing mechanism moves up and down along the damming surface, there is no scum accumulation in the apparatus, so that reliable and smooth operation is always guaranteed, and trouble such as failure of the operating mechanism is less likely to occur. .

In addition, since the inside of the trough is always filled with the scum water, there is little possibility that the scum will dry and adhere to the inner surface of the trough, and there is an advantage that the cause of the odor is eliminated.

[Brief description of the drawings]

FIG. 1 is an overall plan view of a sedimentation pond showing one embodiment of the present invention, FIG. 2 is a cross-sectional view thereof, FIG.
FIG. 4 is a front view of a weir portion, FIG. 5 is a cross-sectional view showing an additional example, FIG. 6 is a side view showing a float having a structure capable of being folded up, and FIG. Side view,
FIG. 8 is a sectional view showing an example of a conventional example. 21: water surface, 24: trough, 25: opening / closing mechanism, 26: outflow pipe (outflow channel), 28: water flow regulating weir, 29: float.

Claims (1)

(57) [Scope of request for utility model registration] 1. A fixed trough having a trough shape with an open top and one side serving as a scum inflow side, and a trough provided near the front surface of the trough as the scum inflow side. A water amount regulating weir that is freely movable up and down along the front surface, a float that makes the water amount regulating weir follow the fluctuation of the water surface while keeping the water amount scum constantly swallowable, and the water amount regulating weir. A scum removing device comprising: an opening / closing mechanism for temporarily holding scum and water flowing over, and an outflow passage provided in communication with the trough and guiding the temporarily held scum and water to the outside of the trough by opening the opening / closing mechanism. Wherein the opening and closing mechanism is arranged so as to partition the inside of the trough, and is provided so as to be able to ascend and descend with an upward direction along the damming surface as an opening direction and a downward direction as a closing direction. Scum removal device that.