JPH11221559A - Scum remover - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily conduct post-treatment by allowing a fixed small amt. of water to flow in at all times even if the water level is fluctuated. SOLUTION: This scum remover is provided with a cylindrical skiimer pipe 5 with both the longitudinal ends supported and capable of being rotated by a rotating means. A clutch mechanism 50 is furnished to the transmission system of the rotating means so that the skimmer pipe 5 is allowed to follow the water level only when reset. In this case, the clutch mechanism 50 is engaged with the clutch shaft 38 projecting from the skimmer pipe 5 by the operation of the rotating means and disengaged from the clutch shaft by the resetting of the rotating means.

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 attracting and removing scum floating on the water surface of a sedimentation basin such as a rectangular sedimentation basin and a circular sedimentation basin.

[0002]

2. Description of the Related Art For example, in a rectangular sedimentation basin, a cylindrical skimmer pipe is provided rotatably about rotation shafts at both ends, and the skimmer pipe rotates in one direction to attract scum on the water surface. -A scum removal device is configured to stop and remove and return.

[0003]

However, the conventional scum removing apparatus cannot follow the water level when returning, and therefore, when the water level in the sedimentation basin fluctuates, the inflow of water other than scum fluctuates. The post-processing was difficult.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and provides a scum removing apparatus in which a small amount of water always flows in even when the water level fluctuates so that post-processing can be easily performed. The purpose is to:

[0005]

According to a first aspect of the present invention, there is provided a scum provided with a skimmer pipe having a cylindrical shape, both ends of which are supported in the longitudinal direction, and rotatable by a rotary driving means. In the removing device, the rotation driving means is provided with a clutch mechanism in its transmission system that allows the skimmer pipe to follow the water level only at the time of return.

According to a second aspect of the present invention, in the first aspect, the clutch mechanism meshes with the clutch shaft protruding from the skimmer pipe by meshing with the clutch shaft by the operation of the rotation driving means and the rotation driving means returning. It is designed to be released.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to preferred embodiments. 1 to 4 show an embodiment of the present invention. As shown in FIG. 1, reference numeral 1 denotes a sedimentation basin, and the sedimentation basin 1 is provided with opposing side walls 2 and 2, between which a water surface caused by sewage is provided. 3 is set.

FIGS. 1 to 4 show a main part of a scum removing apparatus to which various driving methods shown in FIGS. 5 and 5 can be combined. In these figures, 5 is a skimmer pipe, and the skimmer pipe 5 is cylindrical,
A scum inlet 6 having a belt-like shape as viewed from above is open.

As shown in FIG. 1, this skimmer pipe 5 is rotatably supported at each end by a box-shaped scum pit 7 having a lid, which is installed at the center in the width direction of one settling tank 1 later. It is arranged one pair on the left and right.

FIG. 2 shows an enlarged cross section of the scum removing device on the left side of FIG. In FIG. 2, the skimmer pipe 5 is configured such that the scum pit 7 side is open and the other end is closed by a side cover 8. Bearing sleeve 1 on side lid 8
0 is fixed, and a spherical bearing 11 is provided inside the cylinder 10. The first rotating shaft 12 is inserted through the bearing 11, and the rotating shaft 12 is rotatably supported by a bracket 13 fixed to the pond side wall 2 via a support plate 14 made of nylon resin or the like. .

On the other hand, the right end of the skimmer pipe 5 in FIG. 2 is supported by another method. In the right end of the skimmer pipe 5, as shown in FIG.
6 is provided, and the rotating shaft 16 is provided with a fixed cylinder 17 on the outer periphery thereof.
And fixing ribs 18 radially fixed between the upper side of the fixed cylinder 17 and the skimmer pipe 5 to secure a fastening device 19.
, So that it is detachably fixed. The reason why the fixing ribs 18 are provided only on the upper side is to facilitate the flow of the scum water through the lower side as shown by the arrow in FIG.

On the side surface of the scum pit 7, an opening 21 slightly larger than the skimmer pipe 5 is formed. The base 22 shown in FIG.
It is fixed at. The base 22 has a rectangular plate shape as shown in FIG. 4, and an outer bearing cylinder 24 as shown in FIG. At the center of the outer bearing cylinder 24, an inner bearing cylinder 26 is provided via only upwardly fixed ribs 25..., And the second rotary shaft 16 is rotatable via the spherical bearing 11 housed in the inner bearing cylinder 26. It is supported by. Incidentally, the base 22 is embedded in the scum pit 7 so that a vertical surface can be defined by a fastener 23 which allows the nut to be moved and adjusted. Is fixed by pouring a sealing material 28 such as mortar.

The right end of the skimmer pipe 5 in FIG.
Since scum water flows through the space between the two, the following configuration is provided for sealing. On the front side of the base 22, a cylindrical hermetically sealed cylinder 31 with a flange is fixed with a fastener 32 via a packing 30. A seal 33 is provided between the sealed cylinder 31 and the skimmer pipe 5 and a pressing plate 34 of the seal 33 is provided. With the above configuration, the scum water flows as shown by the arrow in FIG. 2 and flows into the scum pit 7 while the skimmer pipe 5 rotates lightly.

The same applies to the following embodiments, but the skimmer pipe 5 may be in the shape of a square tube or an elliptic tube.

FIGS. 5 to 8 show the skimmer pipe 5.
1 shows various methods for rotationally driving. In the embodiment of FIG. A pair of right and left brackets 37 protrude from the front surface of the skimmer pipe 5, and a clutch shaft 38 is connected so as to extend upward from the bracket 37. Further, a float 39 is provided on the front side of the skimmer pipe 5 for returning the skimmer pipe 5 to the damming state shown in the figure. Instead of the float 39 or the float 39
In addition, a return weight or a spring may be provided.

Reference numeral 40 denotes a rotary shaft, which is horizontally disposed in the pool width direction and rotates, and a pair of right and left chains 42 is circulated clockwise by sprockets 41 provided on the rotary shaft 40. I have. Flight 4 around chain 42
.. Are arranged at predetermined intervals, and a drive roller 44 is freely rotatably mounted on one or all of the one side ends.

The driving roller 44 circulates upward and moves through the cam 46 so that the link arm 4
Lift 7. The interlocking arm 47 is supported about an arm shaft 48, and one end of the arm 47 on the side opposite to the cam is lowered by the lifting. In response to this lowering operation, the clutch mechanism 50 is turned on, and the clutch shaft 38 is turned on.
The rotation of the skimmer pipe 5 in the downward direction is interlocked with the rotation of the skimmer pipe 5.

The clutch mechanism 50 includes a clutch plate 52 rotatably provided at one end of an interlocking arm 47 via a shaft 51.
And an arm 5 rotatable together with the clutch plate 52.
3 and a weight 54 provided at the tip of the arm. The clutch plate 52 is horizontal in the case shown by the solid line, and has a through hole 55 in the plane thereof, through which the clutch shaft 38 is passed, and the front and rear clutch claws 56.
It has. The clutch plate 52 is horizontally held by the stopper 57 provided on the fixed side. At this time, the clutch shaft 38 can freely move up and down in the through hole 55.
Therefore, in this case, if the water level fluctuates, the skimmer pipe 5
Can follow the water level by the float 39.

As described above, when the interlocking arm 47 is lifted up through the cam 46 and operates so that one end is lowered, the clutch plate 52 is also lowered, so that the clutch plate 52 comes off from the stopper 57 and the weight 5
4 acts so that the clutch pawl 56 meshes with the clutch shaft 38 as shown by a virtual line. When the interlocking arm 47 is further lowered, the clutch shaft 38 is pushed down, whereby the skimmer pipe 5 is driven to rotate forward and the scum induction port 6 is rotated.
The scum on the water surface will be swallowed by being below the water surface.

When the drive roller 44 passes through the cam 46, the drive roller 44 returns to the clockwise rotation while being engaged by the weight of the cam 46 and the buoyancy of the float 39. When the clutch plate 52 comes into contact with the stopper 57 by returning as indicated by the solid line, the clutch plate 52 is leveled, the clutch pawl 56 is disengaged from the clutch shaft 38, and the clutch returns to the disengaged state to be able to follow the water level. State. The driving roller 44, the cam 46, and the interlocking arm 47 constitute a rotation driving unit.

FIG. 6 shows another embodiment. A cam 60 is rotatably provided on the rotation shaft 40, and a lever 61 is responsive to the cam 60. Lever 61
The gears 64 are configured so that a rack 62 is interlocked and a gear 64 is responsive to the rack 62 via a pinion 63. When the gear 64 rotates clockwise in FIG.
And the clutch plate 52 is also lowered.
The clutch plate 52 includes a clutch claw 56 and a weight 54, and a stopper 57 is also configured. When the clutch plate 52 is lowered, it comes off from the stopper 57, so that the weight 54 acts and the clutch pawl 56 is engaged with the clutch shaft 38. As a result, the scum skimmer 5 is brought into the scum-inducing state by the clutch shaft 38. Cam 60 is lever 6
1, the gear 64 rotates counterclockwise in the figure by the action of a spring 66 and a float (not shown), and returns to the solid line state in FIG. 6, and the clutch plate 52 hits the stopper 57 to completely return to the state in which the clutch is disconnected. Become.

FIG. 7 also shows another embodiment. In this embodiment, a rotating shaft 67 includes an arm 68 and a weight 54, and the arm 68 is equipped with a clutch plate 52.
The arm 68 has a water tank 69. Water tank 69
A micro hole 70 is formed in the bottom or side surface of the hole. In the state shown by the solid line in the figure, the clutch shaft 38 is in a disconnected state. When a certain amount of water starts to be supplied from above into the water tank 69, the clutch plate 52 is lowered forward, and the clutch pawl 56
Are engaged with the clutch shaft 38, and the skimmer pipe 5 is brought into the scum-inducing state. The water is drained from the water tank 69 through the minute holes 70. Therefore, after a certain period of time, the operation proceeds to the return operation while the meshing is being performed. Then, when the weight 54 hits the stopper 57, the clutch shaft 38 is returned to the disconnected state.

FIG. 8 shows another embodiment. In the embodiment, the cam 46 at the bottom of the pond is driven by the drive roller 44 of the flight 43 provided on the chain 42, and the clutch plate 52 is interlocked via the interlock arm 47 and the interlock rod 73. It is driven from the bottom of the pond.
Note that a manual arm 74 may be provided.

[0024]

As described above, according to the present invention, it is possible to provide a scum removing apparatus in which a constant and small amount of water always flows in even when the water level fluctuates so that post-processing can be easily performed. .

[Brief description of the drawings]

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

FIG. 2 is an enlarged sectional view of a main part of FIG.

FIG. 3 is a sectional view taken along line III-III of FIG. 2;

FIG. 4 is a sectional view taken along line IV-IV of FIG. 2;

FIG. 5 is a side sectional view showing an example of a driving method.

FIG. 6 is a side sectional view showing another driving method.

FIG. 7 is a sectional side view showing another driving method.

FIG. 8 is a side sectional view showing another driving method.

[Explanation of symbols]

1 ... sedimentation basin 5 ... skimmer pipe 38 ... clutch shaft
50: clutch mechanism 5 56: clutch pawl

Claims (2)

[Claims] 1. A scum removing device comprising a tubular skimmer pipe supported at both longitudinal ends thereof and rotatable by a rotary drive means, said rotary drive means being provided in a transmission system thereof only when the skimmer is returned. A scum removing device comprising a clutch mechanism for allowing a pipe to follow a water level. 2. The clutch mechanism according to claim 1, wherein the clutch mechanism is disengaged by engaging the clutch shaft projecting from the skimmer pipe with the clutch shaft by operation of the rotation drive means and returning the rotation drive means. Scum removal device.