JPH0677738B2 - Scum skimmer drive - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field] The present invention automatically removes scum in a sedimentation basin by using a flight moving force of a sludge attractor to automatically tilt a pipe scum skimmer to float on the water surface. The present invention relates to a drive device for a scum skimmer, which does not collect scum and can perform tilting operation of a pipe scum skimmer irrespective of flight movement.

[Conventional technology]

The scum skimmer in the sedimentation pond has a scum recovery hole on one outer circumferential surface in the longitudinal direction, and the scum recovery hole is always facing upward. When recovering the scum, the pipe scum skimmer tilts forward and floats on the water surface. I try to collect scum. This pipe scum skimmer is normally and manually rotated to open and close the scum collecting hole, and this opening / closing operation is carried out by a worker periodically or by detecting the amount of floating scum.

For this reason, there is a drawback that the number of workers is too much, and it is necessary to automate the manual operation. This requirement is strong even in existing equipment, and it is desired that existing equipment can be easily modified. In order to solve such a problem, a method of automatically opening and closing the scum skimmer by electric and hydraulic operations has been proposed, but this method requires a separate energy source. There is.

[Problems to be solved by the invention]

In addition, the scum skimmer is automatically rotated and opened and closed by using the flight drive power of the sludge attractor installed in the sedimentation pond without using other power, and the scum floating on the upstream side of the scum skimmer is recovered. The method of making it proposed is also proposed.
There is a drawback that the pipe scum skimmer cannot be tilted regardless of the movement of the flight.

[Means for solving problems]

A driving device for a scum skimmer that collects the scum skimmer and stops the collection by transmitting the driving force of a main chain of a sludge scraper installed in a sedimentation pond to a scum skimmer by a transmission device. Of the main body chain, two link mechanisms for contacting the strikers provided on the respective sides of the two-piece body chain to obtain rotational forces in mutually opposite directions, and two link mechanisms. It is composed of a drive shaft that collects the obtained rotational force and a clutch that transmits or disconnects the rotational force of the drive shaft as the rotational force of the pipe scum skimmer.

〔Example〕

 The present invention will be described below based on the illustrated embodiments.

FIGS. 1 and 2 show an embodiment of a first-order type settling basin.

In the figure, 1 is a settling basin, 2 is a sludge attractor arranged in the longitudinal direction of the settling basin or in an arbitrary direction, and the sludge attractor 2 is provided with two parallel slats suspended on a sprocket wheel 21. A large number of flights 23 are arranged in the main body chains 22a, 22b at regular intervals or at arbitrary intervals. Flight 23 scrapes scum floating on the surface of the water toward the pond end side and other scum removal position side, and scrapes sludge settled at the pond bottom to the discharge port. This flight 23 has its both ends locked to two parallel main body chains 22a and 22b.
A plurality of strikers 3a, 3b are arranged at predetermined intervals in the longitudinal direction of each chain at 2a, 22b, and are fixed in a protruding manner.

On the other hand, the strikers 3a, 3b provided on the chains 22a, 22b of the respective articles
Position and pitch of scum skimmer
It is set according to a predetermined cycle of each movement of backward tilt-return. That is, the striker 3a provided in the main body chain 22a rotates the scum skimmer to the upstream side (forward tilt) together with the link mechanism described later, and at the same time restores the skimmer rotated to the downstream side (backward tilt) to the normal position. It also plays a role. The striker 3b provided on the other chain 22b returns the skimmer that leans forward and tilts the skimmer backward. This striker
As shown in the drawing, 3a and 3b are provided on the outer surface of each chain 22a and 22b so as to be provided on the link side surface or pin shaft of each chain 22a and 22b at an arbitrary pitch regardless of the pitch of the flight 23. .

Sprocket wheel 21 that meshes the chains 22a, 22b
The a and 21b are supported by a single shaft 24, and the shaft 24 is rotatable on the outer side of each sprocket wheel 21a and 21b with respect to the shaft 24 as shown in FIGS. Boss 41a, 41
While supporting b, arm 42 is attached to each boss 41a, 41b.
Project a and 42b. The arm 42a of the boss 41a and the arm 42b of the boss 41b have different projection angles with respect to the shaft 24. That is, the arm 42a is rotated by the striker 3a to an angle suitable for returning the scum skimmer to the normal position or returning to the normal position, and the arm 42b is rotated by the striker 3b to rotate the scum skimmer downstream. Then, two-stage protrusions are set as angles suitable for returning to the normal position or tilting backward.

Also, levers 43a and 43b are provided on the bosses 41a and 41b, respectively,
Rods 44a and 44b are attached to the tip of each lever to form a link mechanism. The tips of the rods 44a, 44b are pivotally locked to the tips of levers 45a, 45b projecting from a shaft 47 rotatably supported by bearings 46a, 46b on the sedimentation basin 1. A lever 48 is projected on a part of the shaft 47, and the lever 48 and a rod 49 projected on a clutch ring projected on the pipe scum skimmer 5 are engaged with each other.

Both ends of the pipe scum skimmer 5 are rotatably supported at required positions in the sedimentation tank 1 via bearings 6,6, and one or more scum recovery ports 5H are formed on the outer peripheral surface thereof. A clutch 7 is provided at one end of the pipe scum skimmer 5, and the pipe scum skimmer 5 is selected to rotate / stop via the clutch 7.

A lever 71 is provided on the clutch ring of the clutch 7 so that the tip of the lever 71 and the rod 49 are pivotally attached.
The clutch 7 is provided with an operating lever 72 for performing an intermittent operation so that the clutch switching operation is manually performed, and further, a lever 73 for performing a manual operation, that is, a detaching operation is provided on the clutch.

In the figure, 8 is a floating weir having floats 81 at both ends, which floats and sinks following the surface of the water. The floating weir is provided in parallel with the upstream side of the pipe scum skimmer 5, and in parallel with the floating weir 8, a fixed weir Is provided.

In the above embodiment, the pipe scum skimmer 5 is inclined to both the upstream side and the downstream side, that is, forward and backward, so that scum floating on the upstream side and the downstream side of the pipe scum skimmer is eliminated. However, the present invention can be applied to a system in which the scum skimmer is tilted only on the upstream side, and the tilting direction of the scum skimmer is not limited.

The operation of the scum skimmer constructed as described above will be described below.

First, when the striker 3a contacts the arm 42a from the normal position shown in FIG. 1 and the arm 42a rotates clockwise, the scum skimmer 5 rotates upstream and leans forward. As a result, the scum floating on the water surface flows over the floating weir 8 at the same time as the water on the water surface flows into the scum skimmer when the water on the water surface flows into the scum recovery port 5H located below the water surface. After tilting the scum skimmer to the upstream side for a predetermined period of time, that is, after removing the floating scum, the other chain is tilted.
The pipe scum skimmer 5 returns the scum recovery port 5H to the normal position of the top surface position by moving the arm 42b with the striker 3b provided at 22b, and this is performed at predetermined intervals by the operation of the scum scraper 2. .

The forward leaning / returning movement of the pipe scum skimmer 5 is automatically performed by the movement of a striker protruding from the normal chain through the lever, rod, shaft 47, rod 49 and clutch 7. However, when the pipe scum skimmer is clogged, or when the scum skimmer is repaired or inspected, the operation lever is used when operating separately from the sludge attractor 2.
When the 72 is operated to disengage the clutch 7, the pipe scum skimmer can be operated independently with the sludge attractor. Therefore, even if the sludge attractor 2 is operated, the pipe scum skimmer 5 can be maintained in a stopped state or its tilting operation can be randomly operated. The tilting of the pipe scum skimmer 5 with the clutch disengaged is performed by manually operating the lever 73. As a result, the pipe scum skimmer can be tilted regardless of the operation of the sludge attractor, and the scum collection or the scum collection stop operation can be performed.

Also, FIGS. 3 to 5 show a second embodiment in which the settling basin is of a second floor type. This is the one in which the scum skimmer shown in FIG. 1 and FIG. The pipe scum skimmer 5 is disposed at the water surface position as in the embodiment of FIGS. 1 and 2, and is provided coaxially with the sprocket wheel 21 of the scum scraper disposed in the water in the lower floor. Rod 43b, lever 45b, shaft 47,
The rod 49 connected via the lever 48 is lengthened, and is arranged almost vertically so as to reach the pipe scum skimmer 5 at the water surface position from the lower layer. Only by changing the length and the mounting direction of the rod 49. Since other mechanisms and operations are the same as those of the first embodiment, detailed structure and operation description thereof will be omitted.

〔The invention's effect〕

According to the present invention, since the manually operable clutch is interposed between the link mechanism for tilting the pipe scum skimmer during the operation of the scum scraper and the pipe scum skimmer, it is possible to operate the scum scraper. There is an advantage that the pipe scum skimmer can be manually tilted regardless.

[Brief description of drawings]

FIGS. 1 and 2 show a first embodiment of a first-floor type sedimentation basin. FIG. 1 is a front view, FIG. 2 is a plan view, and FIGS.
The drawing shows a second embodiment of the second-floor type sedimentation basin. Fig. 3 is a side view, Fig. 4 is a front view, and Fig. 5 is a plan view. 1 is a sedimentation pond, 2 is a scum rake, 22a and 22b are chains, and 23
Is flight, 3a and 3b are strikers, 43a and 43b are levers,
44a and 44b are rods, 47 is a drive shaft, 48 is a lever, 5 is a pipe scum skimmer, 7 is a clutch, 71 is a lever, 72 is an operation lever, and 73 is a lever.

Claims (1)

[Claims] 1. A drive device for a scum skimmer for collecting and stopping the collection of scum skimmer by transmitting the driving force of a main chain of a sludge attractor installed in a sedimentation pond to a scum skimmer by a transmission device. And strikers provided at predetermined positions of the two-piece body chain, and two link mechanisms that come into contact with the strikers provided on each side of the two-piece body chain to obtain rotational forces in mutually opposite directions, and A drive device for a scum skimmer that includes a drive shaft that collects the rotational force obtained by the individual link mechanisms and a clutch that transmits or disconnects the rotational force of the drive shaft as the rotational force of the pipe scum skimmer.