JP2532560Y2 - Scum processing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a water level tracking type scum processing device.

[Conventional technology]

In equipment for water purification, for example, in the first or final sedimentation basin, a large amount of scum stays in a floating state on the water surface, but since these scums are unnecessary, they are removed from the pond by a scum removal device. I try to remove it.

The Applicant has developed and proposed an automated device for performing this removal in connection with the movement of the flight in the pond.

This device includes a trough, a weir, an interlocking arm mechanism, and the like.

The trough is partially fixed and installed in the treatment pond so that the opening is lower than the water surface of the treatment pond.

The weir is provided at a front position on the opening side of the trough via a support plate made of rubber or the like, and is capable of protruding and retracting at the water surface.

The interlocking arm mechanism has an interlocking arm and a transmission mechanism, and the arm has a cam at the tip and is supported by a horizontal fixed movable fulcrum, and the cam moves up and down by following the flight in the treatment pond. I have.

The transmission mechanism transmits the movement of the interlocking arm, sinks the weir below the water surface by lifting the arm upward, and returns the same to the water surface again by returning downward, and is constituted by, for example, a link or the like. ing.

The cam is hit by a circulating flight. As a result, the interlocking arm is lifted, and the weir submerges below the water surface. When the weir is submerged, scum flows into the trough together with the water in the water surface area, and the scum is removed from the pond through the trough.

As the flight passes by the cam, the interlocking arm lowers, thereby returning the weir to the water surface through the transmission mechanism, leaving the scum blocked.

[Problems to be solved by the invention]

By the way, the current scum removing device is configured to directly transmit the movement of the interlocking arm to the vertical movement of the weir, that is, since the upper and lower points of the weir and its stroke are always constant, when the water level fluctuates, the weir becomes As the amount of scum attracted when sinking below increases or decreases,
The amount of scum processed was unfavorably changed.

The present invention has been made to solve such a problem, and an object of the present invention is to make it possible to always obtain a constant scum throughput regardless of fluctuations in water level.

[Means for solving the problem]

In order to solve the above-described problem, the present invention provides a scum removing device as described above, wherein the interlocking arm is configured such that the cam side naturally lowers and returns to a certain height. The arm portion is lifted up to lift the weir above the water surface via the transmission mechanism, and as the arm portion is lowered, the lifting state is released to allow the weir to descend, and the weir is configured to have a water level. Is characterized in that the lowered height is variably defined by a float floating on the floor.

〔Example〕

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

1 to 5 show an embodiment of the present invention together with the operation.

In this embodiment, the sedimentation basin (treatment pond) 1 has a rectangular shape that is long in one direction when viewed from above, and is generally called a “rectangular sedimentation basin”. The longer side of the settling basin 1 is the side walls 2, 2 facing each other, and one of the two shorter sides is a front wall (not shown). When the direction in which the side walls 2, 2 oppose each other is defined as the width direction, a large number of the sedimentation basins 1 are arranged in parallel in the width direction. It is arranged to become.

Water (sewage) 3 is put into the sedimentation basin 1 from the preceding treatment equipment. The upper surface is a water surface 4, and a large amount of large and small scums float and stay on the water surface 4.

In the sedimentation basin 1, two rotating shafts 5 are provided near the water surface 4 and two at the bottom, and the axial center of each shaft 5 is directed in the width direction. In the figure,
One near the water surface 4 is shown. Two sprockets 6, 6 are attached to the outer periphery of each shaft 5, respectively.
A chain 7 is hung through these sprockets 6,6. Two chains 7 are hung so as to be spaced apart in the width direction, and flights 8 are attached to the respective chains 7 so as to protrude outward. These flights 8 are arranged so as to extend in the width direction at regular intervals in the circumferential direction. The flights 8 are driven continuously in the direction of arrow X in FIGS. The drive motor is not shown.

A roller (driving unit) 9 is attached to every other flight 8 at the right end in the traveling direction. The roller 9 is rotatably attached to a bracket attached to the back of the flight 8 by a support shaft. The roller 9 protrudes from the flight 8 to one side in the width direction.

A fixed trough 12 is installed on the front wall of the sedimentation basin 1. The trough 12 has a long trough shape with a rectangular cross section.

Side plates 15, 15 are attached to both ends of the trough 12, and end tubes each having a rectangular cross section are attached to the outside of each of the side plates 15, 15. A flange 17 having an opening at the center is fixed to each outer end of the end tube.

A communication tube is passed through each side wall 2 so as to protrude into the pond, and a trough 12 is fixed between the communication tubes by joining the flange to a flange provided at an end of each tube.

An opening 20 is formed at the front of the trough 12. The opening 20 is set lower than the water surface 4.

A support plate 21 made of a rubber plate is attached to a front side of the opening of the trough 12, and a weir 21 is attached to a tip of the support plate 19. The weir 21 has a triangular hollow shape and is filled with a weight 22 such as sand, but may be, for example, a single metal plate.

The weir 21 is a long one extending between both side plates 15, 15, and is configured to move up and down into two states, a floating state and a sunk state with the water surface 4 as a boundary.

Movable side plates 23, 23 are attached to both ends of this weir 21.
Moves up and down with one. Movable side plate 2
A deformable rubber seal 24 is provided between the side plate 3 and the side plate 15 to prevent water from entering from the side.

The interlocking arm mechanism includes a transmission mechanism in addition to the interlocking arm 25. The intermediate point of the interlocking arm 25 is rotatably supported by an arm shaft 27 extending between bearings 26 provided on the side walls 2.

The interlocking arm 25 is composed of two left and right long ones (or one long one), and a detachable cam 28 is attached to the tip of the arm 25. This cam 28
And a second projection 28a, 28b and a recess 28c. The cam 28 also serves as a weight, and the interlock arm 25
Is always lowered in the direction of the cam 28. A stopper 29 is provided on the side wall 2. The stopper 29 serves to keep the cam 28 at such a height as to properly contact the roller 9.

The other end of the interlocking arm 25 is formed in a U-shape, and a first rotation shaft 30 is provided in the same portion. The axis of the first rotating shaft 30 is oriented in the pond width direction.

U-shaped brackets 31 protrude from two places (or one) on the front side of the weir 21, and each bracket 31 is provided with a second rotating shaft 32. This second rotating shaft 32
A rod 33 extending upward extends from above, and a nut 34 is attached to an upper portion of the rod 33. The rod 33 is slidable through the hole 30a of the first rotating shaft 30.

From the upper surface of both ends of the weir 21, riding members 35, 35 whose side faces have an inverted L shape project, and a roller 3
6 is installed.

A bracket 37 is attached to each side wall 2, and a link 38 is attached to the bracket 37 so as to move up and down. Is installed. On the float 39, the roller 36 of the riding member 35 is configured to ride on and off.

FIGS. 1 and 2 show the operation of the scum processing on the assumption that the water surface 4 is at a standard water level. 1 shows a state in which the scums 40 are blocked. In this state, the interlocking arm 25 is lowered due to the heavy weight of the cam 28, and is kept horizontal by the stopper 29. The base of the rod rises
The weir 21 is lifted through. The roller 36 is lifted upward and away from the float 39. Weir 21 is on water surface 4
Is emerging. As shown in FIG.
Is raised by hitting the first projection 28a of the cam 28, so that the interlocking arm 25 moves up at the distal end and down at the base. The base side descends with a large stroke and the weir
21 comes down from its raised state due to its own weight. Then, the weir 21 descends to a certain height, which is equal to or lower than the water surface 4, but the weir 21
Riding on 39 will prevent it from falling any further. The link arm 25 is lowered further. Since the lowering of the weir 21 is regulated by the float 39, the weir 21 always comes to a certain depth with respect to the water surface 4. This allows scum 40…
… Is attracted into the trough 12 and eliminated outside the pond.

FIG. 4 and FIG. 5 show the case where the water level of the water surface 4 becomes lower than that shown in FIG. 1 and FIG.
39 goes down as well. As a result, the height at which the riding member 35 with the roller 36 stops is also lowered (h) by that amount, and the weir 21 is further lowered in the h direction. However, the height relationship between the upper end of the weir 21 and the water surface 4 is obtained in the same dimensions as those shown in FIG. 1 and FIG.

Therefore, even when the water level fluctuates, the amount of sinking of the weir to the water surface can be constantly obtained, whereby the scum attraction is always constant and the efficiency can be improved. The cam 28
When the roller 9 passes by, the tip of the interlocking arm 24 is lowered and the base side is raised, and the first rotating shaft 30 hits the nut 34 and the rod 33 is lifted, so that the weir 21 is lifted above the water surface 4. Thereby, the scum 40 is blocked.

This invention is not limited to the configuration shown in the above embodiment.
For example, the following configuration is possible. As shown in FIG. 6, in order to follow the water level, a member projecting from the weir 41
A float 43 may be provided at the tip of 42 so as to float on the water surface 44. In this case, the float 43 follows the fluctuating water level.

[Effect of the invention]

This invention is as described above, and therefore, the throughput of scum can be constantly obtained irrespective of the fluctuation of the water level.

[Brief description of the drawings]

FIG. 1 is a side view showing an embodiment of the present invention, FIG. 2 is a side view showing a state where a weir is lowered, FIG. 3 is a partial perspective view of FIG. 1, and FIG. 4 is a state where a water level is lowered. Side view, fifth
FIG. 5 is a side view showing a state where the water level is lowered, FIG. 5 is a side view showing a state where the weir is lowered at the same water level, and FIG. 6 is a side view showing another scum processing device. 1… settling pond, 4,44… water surface, 8… flight, 12…
Trough, 20 ... Opening, 21, 41 ... Weir, 25 ... Interlocking arm, 28 ... Cam, 33 ... Rod, 39, 43 ... Float

Claims (1)

(57) [Scope of request for utility model registration] 1. A trough, which is provided near an opening of a trough and is fixedly installed in the treatment pond so that the opening is lower than the water surface of the treatment pond so that the opening and closing can be performed at the water surface. An interlocking arm which is supported by a horizontal axis-shaped movable fixed fulcrum with a cam, and which moves up and down by following the flight in the treatment pond; and an arm which transmits the movement of the arm. An interlocking arm mechanism having a transmission mechanism that causes the weir to sink below the surface of the water by lifting upward and causes the same to protrude above the surface of the water again by returning downward, wherein the interlocking arm comprises: The cam is naturally lowered so that it returns to a certain height.In the lowered state, the arm of the pond is lifted up and lifted so that the weir floats above the water surface via the transmission mechanism. The weir is configured to release the lifting state as the part lowers to allow the descent of the weir, and the weir is configured such that the lowered height is variably defined by a float floating on the water level A scum processing device.