JP2001246373A - Scum skimmer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a scum skimmer capable of lightly operating a weir by a smaller force and thereby reducing the wear of each of sections/parts of the device linked with the weir to a low level. SOLUTION: This scum skimmer is provided with a trough placed so that at least one side of the trough is fixed in a treatment pond such as sedimentation pond, as a scum introduction side of the trough, a weir which is placed on the scum introduction side of the trough and is capable of upwardly and downwardly being moved in a specified path with the water surface level as the base, so that when the weir is downwardly moved, scum on the water surface can be introduced into the trough and when the weir is upwardly moved, the scum introduction is stopped, a watertight member which consists of an elastically deformable material and is placed between the weir and the scum introduction side of the trough and also between the upper part and lower part of each of them, so as to isolate the upstream side and downstream side from each other with respect to water, and capable of preventing water from entering into the trough while allowing the weir to upwardly and downwardly move; and a weir drive means for upwardly and downwardly driving the weir; wherein the weir is almost vertically moved.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a scum removing device for removing scum floating on a water surface such as a sedimentation pond.

[0002]

2. Description of the Related Art For example, in a sedimentation pond, scum floats and floats on the water surface, so it is necessary to remove them.
For this reason, a scum removal device is installed to deal with this. By the way, in this type of scum removing device, a trough having a trough shape is installed to swallow the scum. As one of them, there is a type in which the trough is fixed. This type is configured so that the front side is lower than the water surface, and a weir is provided on the front side and the water moves up and down at the boundary by moving up and down. FIG. 10 shows an example of a current type of such a scum removing device, wherein 100 is a trough, which is a J-shaped gutter-like elongated one, and one side thereof is a water surface 101.
It is fixed horizontally in the sedimentation basin so as to be on the lower side. A rotary shaft 102 is provided on the front side (left side) of the trough 100 on the scum swallowing side, and a long weir 103 is provided via the rotary shaft 102 so as to move up and down and float on and off the water surface 101. ing. The scum is swallowed by this ups and downs, and the scum is blocked and stored.
In order to drive the weir 103, it is connected to the weir 103 via an interlocking rod 105 to an operating arm 104 that moves up and down using the movement of a flight driven in the settling basin.

[0003]

However, this type of scum removal device is provided with the bottom surface of the weir 103 projecting diagonally forward and driven to swing up and down as it is. As a result, there is a problem that the weir 103 cannot be pushed down unless a large force F is applied from the interlocking rod 105 as shown by the arrow XY. Such a large force F
Means that a large reaction force is applied to the flight. As a result, the fact is that not only the flight but also the chain and the like that drives the flight have been greatly worn.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem, and has a scum removal in which a weir is operated lightly with a smaller force so that wear of various parts and parts for interlocking the dam is reduced. It is intended to provide a device.

[0005]

According to a first aspect of the present invention, there is provided a trough fixedly installed in a treatment pond such as a sedimentation pond with at least one side serving as a scum inducing side. A weir that makes it possible to attract scum on the water surface when descending by descending and moving along a certain orbit based on the water surface level on the scum inducing side, and to stop attracting when it rises, and a weir and trough A watertight member made of an elastically deformable member that is provided between the upper and lower sides of the scum induction side in a front-rear blocking shape and that prevents water from entering the trough while allowing the weir to move up and down, and drives the weir up and down A scum removing device provided with a weir driving means, wherein the weir moves up and down substantially vertically.

According to a second aspect of the present invention, in the first aspect, the watertight member has a curved sectional shape such as a U-shape or a V-shape, and is set such that the curved protruding side faces the inside of the trough. Have been.

[0007] The invention described in claim 3 is claim 1 or 2.
In the described one, the up-and-down movement of the weir is guided by parallel links.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the illustrated embodiments. 1, 2 and 3 show a preferred embodiment of the present invention. FIG. 1 is a plan view of a scum removing device, FIG. 2 is a sectional view taken along the line II-II of FIG. 1, and FIG. It is a part perspective view.

Reference numeral 1 denotes a side wall of a settling basin which is opposed to the left and right sides. On both side walls 1, 1, communicating troughs 2, 2 each having a penetrating shape are horizontal (one side of scum water, for example, as shown in FIG. 1). Downward, slightly inclined so as to flow smoothly without interruption). Flanges 3 and 3 are provided at both ends of the communication troughs 2 and 2, respectively.

Reference numeral 5 denotes a trough. The trough 5 is connected to the flanges 3, 3 via fasteners 6,.
Are fixed laterally in the pond with both ends. As shown in FIG. 2, the flange 7 has a four-sided frame shape with a through hole in the center through which scum water flows, and a receiving plate portion 7a projects toward the through hole at the front side in the frame. Is formed. The receiving plate portions 7a are similarly provided on the flanges 7 at both ends of the trough 5. This trough 5 is, as shown in FIG.
It has a substantially J-shaped square gutter shape. Only the front side, which is the scum swallowing side, is set lower than the water surface 8, and the upper end thereof is a horizontal mounting plate portion 9.

Reference numeral 10 denotes a weir having a flat cross-sectional shape of an isosceles triangle. The weir 10 has an elongated shape slightly shorter than the portion between the flanges 7 of the trough 5, and both ends are side portions. It is closed by a lid 11 to be a hollow hermetic type. As shown by the broken lines in the figures, a protruding piece 12 is formed integrally with the trough 5 when viewed from the side and projects toward the flange 7 when viewed from above, as shown by a broken line in each figure (or separately). May be fixed).

Reference numeral 14 denotes a rubber watertight member, which is U-shaped in a natural state.
It is formed so as to have an elongated shape with a cross-sectional shape curved in the shape of a letter, and its lower base is fixed with a fastener 15 along the mounting plate 9, while the upper side of the weir 10 is It is connected to the bottom surface by a fastener 16. The watertight member 14 is provided with seals 17 at both left and right ends, and the seal 17 is slidably abutted on the flange 7 so that water from the front does not enter. The seal 17 is made of a U-shaped grooved rubber or sponge. As shown in FIG. 3, the seal 17 is fitted on the edge of the watertight member 14 and its upper part is fitted on the projecting piece 12. It has become. A fixed seal may be provided on the flange 7 side, and the end faces of the weir 10 and the watertight member 14 may be slidably contacted with the fixed seal to maintain the watertight state. Further, a fixed seal 18 is provided on the flange 7 side as shown by an imaginary line in FIG.
A watertight state may be provided by providing a device as shown in FIG.

Reference numeral 20 denotes a stay. The stay 20 is provided near the left and right ends of the trough 5 so as to project from the front of the trough so as to form an L-shape. The movable link tip of the parallel link 21 provided in such a manner is connected to the front end bottom surface of the weir 10. As a result, the weir 10 is guided up and down substantially vertically. An interlocking rod 22 is connected to the middle of the parallel link 21, and the interlocking rod 22 is rotatably connected to a front end of an arm 24 attached around a pivot shaft 23 on the upper surface of the rear end of the trough 5. ing. A rod 26 of an electric cylinder 25 is connected to the arm 24 so as to reciprocate up and down.

As shown by phantom lines in FIG. 2, a cam roller 30 is provided at the longitudinal end of the flights 29...
The interlocking rod 22 may be pushed down by pushing up the cam plate 31 by 0 and pushing down the rear part of the operating arm 32 provided on the cam plate 31.

The electric cylinder 25 is moved from the blocking state shown in FIG.
By pushing down the rod 26, the arm 24 and the interlocking rod 22 are pushed down, whereby the parallel link 21 is lowered and the weir 10 is lowered. At this time, the weir 10 is lowered substantially vertically by the parallel link 21, and the lowering resistance is very small and light. The watertight member 14 may be in a natural state (a state in which no load is applied; a state of a molded product) in a state where the watertight member 14 is bent.

The weir 35 may be formed in a belt-like plate shape as shown in FIG. This can be similarly applied to the other embodiments. Further, as shown in FIG. 4, the parallel link 36 may be provided to protrude from the trough 5 side. This can be similarly applied to the other embodiments. Arrows in the figure are driving forces. The watertight member 37 may be bent in two steps (a plurality of steps) or may be bent in a plurality of steps either forward or backward so as to alternately protrude forward and backward like a virtual line. Also,
The watertight member 33 may be formed in a U-shape like an imaginary line (a case where the watertight member 33 projects in the trough and a case where it projects in the opposite direction). In this case, the corner portion may be rounded.

Further, as shown in FIG. 5, the weir 38 may be a strip-shaped plate, a triangle in FIG. 2, or a round mountain as shown in FIG. 9, but the water-tight member 39 has a J-shaped cross section. May be. In the figure, it protrudes obliquely downward, but it may protrude obliquely upward.

FIG. 6 shows another embodiment, in which a trough 41 is provided.
Provided with a weir 43 via a U-shaped or other watertight member 42,
The operation is directly performed by the operation arm 45 via the control arm. The operating arm 45 has a base portion rotatably supported by the trough 41, which can also drive the weir 43 substantially vertically. In addition, as shown by a virtual line, the operation arm
The parallel link 5 (not shown) may be linked to the link 5 via the link rod 46 without the bracket 44. The bracket 45 may be arranged like a virtual line.

FIG. 7 shows another embodiment in which a weir 50 is moved up and down via a parallel link 49 at the front side of a trough 48. A watertight member 51 has a base fixed on the front end of the trough 48. On the other hand, the upper part is brought into contact with the weir 50. This can be similarly applied to the other embodiments. The upper part of the watertight member 51 may be connected to the weir 50.

FIG. 8 shows another embodiment, in which a trough 53 is provided with a weir 55 via a substantially V-shaped watertight member 54, and a base is formed on the trough 53 so as to operate the weir 55 substantially vertically. Are connected to each other. The watertight member 54 may have another shape, and the weir 55 may have another shape. Numeral 57 denotes a water tank, which is mounted on the arm 56 and supplies water 58 only for a certain period of time.
9 is continuously performed little by little. While the weir 55 is pushed down by the water supply 58 via the arm 56, the water tank 57 is lifted by the stop of the water supply 58 and the drainage 59, and the weir 55 is also raised and returned. Incidentally, reference numeral 60 denotes a manual arm. This water tank system can be similarly applied to other embodiments.

The embodiment of FIG. 9 shows a U-shaped watertight member 62.
Is directed forward as shown by a solid line (or may be backward as shown by a virtual line). The weir 63 has a round mountain shape, but is not limited to this. The watertight member may have an elliptical cross section obtained by combining a solid line and an imaginary line.

[0021]

Since the present invention is constructed as described above, the scum is removed by making the weir operate lightly with a smaller force and thereby reducing the wear of various parts and parts for interlocking the dam. An apparatus can be provided.

[Brief description of the drawings]

FIG. 1 is a plan view of a scum removing device showing an embodiment of the present invention.

FIG. 2 is a sectional view taken along line II-II of FIG.

FIG. 3 is a perspective view of the main part.

FIG. 4 is a schematic cross-sectional view showing another embodiment.

FIG. 5 is a schematic cross-sectional view showing another embodiment.

FIG. 6 is a perspective view showing an embodiment of another device.

FIG. 7 is a schematic sectional view showing another example of the apparatus.

FIG. 8 is a schematic sectional view showing another embodiment.

FIG. 9 is a schematic cross-sectional view showing another embodiment.

FIG. 10 is a schematic sectional view showing an example of a current scum removing device.

[Explanation of symbols]

 5 trough 8 water surface 10 weir 14 watertight member.

Claims (3)

[Claims] 1. A trough fixedly installed in a treatment pond such as a sedimentation basin with at least one side as a scum inducing side, and a vertical movement on a scum inducing side of the trough by following a fixed orbit with respect to a water surface level. A weir that allows the scum on the water surface to be attracted when it descends, and stops the attraction when it rises, and a weir provided between the weir and the trough on the scum-inducing side in a front-rear cut-off manner. A scum removing device including a watertight member made of an elastically deformable member that prevents water from entering the trough while allowing movement, and a weir driving unit that drives the weir up and down, wherein the weir is substantially A scum removal device characterized by being vertically moved up and down. 2. The scum removal device according to claim 1, wherein the watertight member has a curved cross section such as a U-shape or a V-shape, and the curved protruding side is set to face the inside of the trough. 3. The scum removing device according to claim 1, wherein the vertical movement of the weir is guided by a parallel link.