JPH0248093A - Scum skimmer drive device - Google Patents

Abstract

PURPOSE:To allow tilting operation of a pipe skimmer manually regardless of the operation of a scum scraper by providing a clutch which can be manually operated between a link mechanism which tilts the pipe scum skimmer by operation of the scum scraper and the pipe scum skimmer. CONSTITUTION:The front tilting and resetting motions of the pipe scum skimmer 5 are usually executed automatically via a lever, rod, a shaft 47, a rod 49 and the clutch 7 by movement of strikers projected to a chain. However, the skimmer 5 can be operated independently from the scraper 2 when the clutch 7 is disengaged by an operating lever 72 at the time when the skimmer 5, etc., are clogged or in case of repairing and inspecting the skimmer 5 or at the time of operating the skimmer discretely from the sludge scraper 2. The skimmer 5 is, therefore, capable of maintaining the stop state or allow random control of the tilting action even during the operation of the scraper 2. Since the tilting of the skimmer 5 in the disengaged state of the clutch is executed by manual operation of the lever 73, the skimmer 5 can be tilted and the capturing of the scum or stopping thereof is possible regardless of the operation of the scraper 2.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is a pipe scum skimmer that automatically removes scum in a settling tank by using the flight movement force of a sludge scraper.
This invention relates to a scum skimmer drive device which is adapted to collect scum floating on the water surface by tilting the pipe scum skimmer, and also to perform tilting operation of the pipe scum skimmer regardless of flight movement.

[Conventional technology]

The scum skimmer in the sedimentation basin has a scum collection hole bored on one outer circumferential surface in the longitudinal direction, and the scum collection hole is always facing upward, and when collecting scum, the pipe scum skimmer is tilted forward and floats on the water surface. I'm trying to collect scum. Generally, this pipe scum skimmer is periodically and manually rotated to open and close the scum collection hole, and this opening and closing operation is performed by a worker periodically or by detecting the amount of floating scum.

This has the disadvantage that it requires too much effort on the part of the workers, and it is necessary to automate the operations that are previously performed manually. This demand is strong even for existing equipment, and it is desired that existing equipment can be easily modified. In order to solve these problems, a method has been proposed in which the scum skimmer is automatically opened and closed using electric or hydraulic operation, but this method has the problem that a separate energy source must be prepared. There is.

[Problem that the invention seeks to solve]

In addition, without using any other power, the flight drive power of the sludge scraper installed in the settling basin is used to automatically rotate the scum skimmer, open and close it, and collect the scum floating on the upstream side of the scum skimmer. A method to do so has also been proposed.

There is a drawback that the pipe scum skimmer cannot be tilted regardless of flight movement.

[Means for solving problems]

A scum skimmer driving device that transmits the driving force of a main body chain of a sludge scraper installed in a settling tank to the scum skimmer through a transmission device to collect the scum skimmer and stop the collection. A striker provided at a predetermined position on the main body chain, two link mechanisms that contact the strikers provided on each side of the two main body chains to obtain rotational force in mutually opposite directions, and two links. It consists of a drive shaft that collects the rotational force obtained by the mechanism, and a clutch that transmits the rotational force of the driveshaft as rotational force to the pipe scum skimmer or disconnects it.

〔Example〕

The present invention will be explained below based on illustrated embodiments.

What is shown in FIGS. 1 and 2 is an embodiment of a single-story sedimentation tank.

In the figure, 1 is a sedimentation tank, and 2 is a sludge scraper installed in the longitudinal direction of this sedimentation tank or in any direction. A large number of flights 23 are arranged at regular or arbitrary intervals on the main body chains 22a, 22b. The flight 23 scrapes up the scum floating on the water surface toward the other end and other scum removal positions, and scrapes up the sludge that has settled on the pond bottom toward the discharge port. This flight 23
has two main body chains 22a whose ends are parallel to each other,
22b, and a striker 3a is attached to the chains 22a, 22b.

3b are arranged and fixed at required intervals in the longitudinal direction of each chain.

On the other hand, the positions and pitches of the strikers 3a, 3b provided in the chains 22a, 22b of each strip are set according to the predetermined cycles of the forward tilting-return movement and backward tilting-return movement of the scum skimmer. That is, the striker 3a provided in the main body chain 22a works together with a link mechanism described later to rotate the scum skimmer upstream (tilting forward), and at the same time returns the skimmer that has rotated downstream (tilting backward) to its normal position. It also plays the role of The striker 3b provided in the other chain 22b returns the skimmer that has tilted forward and tilts the skimmer backward. As shown in the figure, these strikers 3a and 3b are provided to protrude from the outer surface of each chain 22a and 22b, and regardless of the pitch of the flight 23, each chain 22a
, 22b are provided at arbitrary pitches on the link sides or pin shafts.

The sprocket wheels 21a and 21b that engage the chains 22a and 22b are supported by one shaft 24,
This shaft 24 has each sprocket wheel 21a, 21b.
As shown in FIGS. 1 and 4, an arm 42a is rotatably supported on the outside of the shaft 24 with respect to the shaft 24, and supports bosses 41a and 41b.

421] is installed protrudingly. The arm 42a of the boss 41a and the arm 42b of the boss 4.1b have different protruding angles with respect to the shaft 24. That is, the arm 42a is the striker 3a.
so that the scum skimmer rotates upstream and returns to its normal position or tilts forward at an appropriate angle, and the arm 4
2b defines two stages of protrusions at angles suitable for the scum skimmer to rotate downstream and return to the normal position or tilt backwards by the striker 3b.

Also, bosses 4.1a and 4-11+ each have Leher 43
a, 43b are provided protrudingly, and a rod 44 is attached to the tip of each lever.
a and 44b are engaged to form a link mechanism. The tip of each lot 44a, 44b is attached to a shaft 4 rotatably supported in the sedimentation tank 1 by bearings 46a, 46b.
A lever 48 is protruded from a part of this shaft 47, and a clutch link protruding from the pipe scum skimmer 5 is connected to the lever 48. It locks with the provided rod 49.

Both ends of the pipe scum skimmer 5 are rotatably supported at predetermined positions in the sedimentation tank 1 via bearings 6, 6, and one or more scum collection ports 5H are bored on the outer peripheral surface thereof.
Also, a clutch 7 is attached to one end of this pipe scum skimmer 5.
is provided, and the rotation and stopping of the pipe scum skimmer 5 is selected via this clutch 7.

A lever 71 is provided protrudingly from the clutch ring of the clutch 7, and the tip of the lever 71 and the rod 49 are pivotally connected.
2 is provided protrudingly to allow manual clutch switching operation, and furthermore, a lever 73 for manual operation, that is, for connection/detachment, is provided protrudingly from this clutch.

In addition, 8 in the figure is a floating weir with floats 81 installed at both ends, which floats and sinks following the water surface, and is installed parallel to the upstream side of the pipe scum skimmer 5, and a fixed weir 9 is installed in parallel with this floating weir 8. is provided.

In the above embodiment, the pipe scum skimmer 5 is tilted forward and backward to both the upstream and downstream sides of the pipe scum skimmer 5 to remove scum floating on the upstream and downstream sides of the pipe scum skimmer. However, it is also applicable to a method in which the scum skimmer is tilted only to the upstream side, and the direction in which the scum skimmer is tilted is not limited.

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

First, from the normal position shown in FIG.
When the arm 42a contacts the arm 42a and the arm 42a rotates clockwise, the scum skimmer 5 rotates upstream and tilts forward.

As a result, when the water on the water surface flows into the scum collection port 5H located below the water surface, the scum floating on the water surface simultaneously overflows the floating weir 8 and flows into the scum skimmer. After the scum skimmer is tilted upstream for a predetermined period of time, that is, after the floating scum is removed, the striker 3b provided on the other chain 22b kicks the arm 42b, and the pipe scum skimmer 5 collects the scum. The opening 5H returns to its normal position on the top surface, and this is done at predetermined intervals by operating the scum scraper 2.

The forward tilting and return movement of the pipe scum skimmer 5 is normally performed by moving a striker protruding from the chain, which moves the lever, rod, shaft 47. This is done automatically via the rod 49 and clutch 7. However, when the pipe scum skimmer etc. is clogged, or when repairing and inspecting the scum skimmer, when operating it separately from the sludge scraper 2, operating the bar 72 to disengage the clutch 7 will clear the pipe scum skimmer. - can be operated independently with the sludge scraper. Therefore, even if the sludge scraper 2 is in operation, the pipe scum skimmer 5
It is possible to maintain a stationary state or to operate its tilting motion randomly. The pipe scum skimmer 5 is tilted with the clutch released by manually operating the lever 73. As a result, the pipe scum skimmer can be tilted regardless of the operation of the sludge scraper, and the scum collection or scum collection stop operation can be performed.

The second embodiment shown in Figures 3 to 5 is a two-story sedimentation tank, in which the scum skimmer shown in Figures 1 and 2 is installed on each floor, but on the lower floor. The pipe scum skimmer 5 is arranged at the water surface position in the same way as in the embodiments shown in Figs. The rod 49 connected via the rod 44b, lever 45b1, shaft 47, and lever 48 is made longer than the lever 43b, and is arranged almost vertically so as to reach the vibe scum skimmer 5 at the water surface position from the lower level. Since the mechanism and operation other than changing the length and arrangement direction of the lot 49 are the same as those in the first embodiment, detailed structure and operation explanation thereof will be omitted.

〔Effect of the invention〕

According to the present invention, a manually operable clutch is interposed between the link mechanism for tilting the pipe scum skimmer and the pipe scum skimmer during operation of the scum scraper, so that the operation of the scum scraper can be easily controlled. There is an advantage that the vibration cam skimmer can be manually tilted without any delay.

[Brief explanation of the drawing]

Figures 1 and 2 show a first embodiment of a single-story sedimentation tank, with Figure 1 being a front view, Figure 2 being a plan view, and Figures 3 to 5.
The figures show a second embodiment of the two-story sedimentation basin, with FIG. 3 being a side view, FIG. 4 being a front view, and FIG. 5 being a plan view. 1 is a sedimentation tank, 2 is a scum scraper, 22a and 22b are chains, 23 is a fly I, 3a and 3b are strikers.
43a, 43b are levers 44a, 44. b is lot,
47 is a drive shaft, 48 is a lever, 5 is a pipe scum skimmer, 17 is a clutch, 71 is a lever, 72 is an operating lever, 73 is a lever

Claims (1)

[Claims] (1) A scum skimmer driving device that transmits the driving force of the main chain of a sludge scraper installed in a settling basin to the scum skimmer through a transmission device to collect the scum skimmer and stop the collection, a striker provided at a predetermined position on each of the two main body chains, two link mechanisms that abut the strikers provided on each side of the two main body chains to obtain rotational forces in mutually opposite directions, and two link mechanisms. A drive shaft that collects the rotational force obtained from the link mechanism, and the rotational force of this drive shaft is transmitted as the rotational force of the pipe scum skimmer.
Or a scum skimmer drive system consisting of a clutch that disengages.