JPH0545364Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a sediment scraping device for scraping up settled substances such as sand settled in a pond tank.

[Conventional technology]

Generally, in sewage treatment facilities, industrial wastewater facilities, etc.
A pond is provided to settle the sand in the inflow water, and a sand-settling and scraping device is disposed in the pond to scrape up the settled sand.

As such a sand settling and scraping device, those disclosed in, for example, Japanese Unexamined Utility Model Publication No. 133205/1982 and Japanese Unexamined Utility Model No. 14613/1988 are known.

FIG. 5 shows this type of sand settling and scraping device, and in the figure, reference numeral 11 indicates a pond tank for settling sand in inflow water flowing in from the direction of arrow A.

Inside the pond tank 11, a front sprocket wheel 13 and a rear sprocket wheel 15 are arranged at intervals in the horizontal direction.

On the other hand, on the top surface of the lid part 17 of the pond tank 11, a sediment transporter 19 for discharging sediment is arranged.
An upper sprocket wheel 21, which is a driving sprocket wheel, is arranged above this.

In the figure, reference numeral 23 indicates a sprocket wheel of the take-up device, and reference numeral 25 indicates an intermediate sprocket wheel.

Front sprocket wheel 13, upper sprocket wheel 21, sprocket wheel 23,
25 and the rear sprocket wheel 15, an annular chain 27 is wound around the chain 27, and a bucket 29 is fixed to the chain 27 for scraping up sediment settled in the pond tank 11.

In such a sand raking device, the upper sprocket wheel 21 moves the chain 27 in the direction indicated by the arrow B in the figure.
The sand is scraped up by the bucket 29 which is fixed to the chain 27.
At the point where the bucket 29 is located above the sediment carrying machine 19, the sediment in the bucket 29 is put into the sand carrying machine 19, and the sediment settled in the pond tank 11 is discharged from the settling machine 19 to the outside.

[The problem that the idea attempts to solve]

However, in such a conventional sand-settling and scraping device, when the amount of water flowing into the pond tank 11 increases due to heavy rain, or when the use of the sand-settling and scraping device is stopped for a long time, There is a problem in that a large amount of sludge and the like accumulates at the bottom of the pond tank 11, and the bucket 29 of the settling and scraping device is buried in the sludge, causing an overload during operation and being unable to perform its function and being forced to stop. .

The present invention solves the above-mentioned problems, and aims to provide a sand raking device that can reliably prevent buckets from being buried in sludge with a simple configuration.

[Means to solve the problem]

The sand raking device related to the present invention has the following features in the pond tank:
A front sprocket wheel and a rear sprocket wheel are spaced apart horizontally, and an upper sprocket wheel is located above the pond, and the front sprocket wheel
In a sediment scraping device, the rear sprocket wheel and the upper sprocket wheel are tied together and wound around the inside of an annular chain, and a bucket for scraping up sediment settled in the pond tank is fixed to the annular chain, The front sprocket wheel and the rear sprocket wheel are arranged at the lower ends of a front swing arm and a rear swing arm that are respectively fixed to a front support shaft and a rear support shaft that are rotatably supported at both ends on the side surface of the pond tank. A ring-shaped conduction pipe is inserted through a pair of protection pipes connected to a side surface of the pond tank to a front swinging sprocket wheel and a rear swinging sprocket wheel fixed to the front support shaft and the rear support shaft, respectively. A power transmission sprocket wheel is fixed to the front support shaft or rear support shaft, and a drive chain for transmitting power from a power drive device is wound around the power transmission sprocket wheel. be.

[Effect]

In the present invention, when the drive device is operated, the drive chain is driven, for example, a power transmission sprocket wheel fixed to the rear support shaft rotates, and the rotation of the power transmission sprocket wheel causes the rear support to rotate. The shaft rotates, and as a result, the rear swing arm fixed to the rear support shaft rotates by a predetermined angle, and the rear sprocket wheel disposed at the lower end of the rear swing arm moves upward.

The rotation of the rear support shaft causes the rear swing sprocket wheel to rotate, and the rotation of the rear swing sprocket wheel is transmitted to the forward swing sprocket wheel via the transmission chain. The rotation of the sprocket wheel causes the front support shaft to rotate, and the front swing arm fixed to this front support shaft rotates at almost the same angle as the rear swing arm, and the front sprocket located at the lower end of this front swing arm rotates. The wheel moves upward.

The conduction chain passes through a pair of protective pipes connected to the side of the pond tank, so it runs without sagging and passes through the forward swinging sprocket wheel (or backward swinging sprocket wheel). The power from the drive device can be reliably transmitted to the rear swinging sprocket wheel (or the forward swinging sprocket wheel).

〔Example〕

Hereinafter, details of the present invention will be described with reference to an embodiment shown in the drawings.

Figures 1 to 4 show an embodiment of the sand settling and scraping device of the present invention, and in these figures, reference numeral 31 indicates a tank for settling sand in inflow water. .

Inside this pond tank 31, a front sprocket wheel 33 and a rear sprocket wheel 35 are arranged at intervals in the horizontal direction.

On the other hand, on the upper surface of the lid part 37 of the pond tank 31, a sand removal machine 39 for discharging the sand is arranged, and above this, an upper sprocket wheel 41, which is a driving sprocket wheel, is arranged. There is.

The drive shaft 43 of the upper sprocket wheel 41 receives power from a drive device 45 through a drive chain 47.
It is said that the structure is transmitted through the .

The front sprocket wheel 33, the rear sprocket wheel 35, and the upper sprocket wheel 41 are connected to each other, and the inside of an annular chain 49 is wrapped around the chain 49.
A bucket 51 is fixed to the bucket 51 for scraping up the settled sand.

In this example, the upper sprocket wheel 4
A take-up device 53 is arranged at a horizontal distance from the chain 4 by moving the sprocket wheel 55 in the horizontal direction.
9 tension is adjusted.

Further, below the take-up device 53, an intermediate sprocket wheel 57 is rotatably disposed on a support shaft 61 whose both ends are fixed to the side wall 59 of the pond tank 31.

Therefore, in this embodiment, the front sprocket wheel 33 and the rear sprocket wheel 3
5 are arranged at the lower ends of a front swing arm 67 and a rear swing arm 69 which are fixed to a front support shaft 63 and a rear support shaft 65, respectively, which are rotatably supported on a side wall 59 of the pond tank 31.

Then, the front support shaft 63 and the rear support shaft 65
, a forward swinging sprocket wheel 71 and a rearward swinging sprocket wheel 73, respectively.
A ring-shaped conduction chain 75 is connected between these sprocket wheels 71 and 73.
is wrapped around it.

This annular conduction chain 75 is inserted into a pair of protective pipes 77, and these pair of protective pipes 77 are connected by a connecting member 79.
As shown in FIG.
It is fixed at 9.

Further, as shown in FIG. 2, a power transmission sprocket wheel 81 is fixed to the rear support shaft 65.
, a drive device 83 disposed on the top surface of the lid portion 37.
A drive chain 85 that transmits power from is wound around.

In this embodiment, an auxiliary sprocket wheel 87 is rotatably disposed on the front support shaft 63 and the rear support shaft 65, as shown in FIG. 2, for auxiliary guidance of the chain 49.

In the sand raking device configured as described above, when the drive device 45 is driven, the upper sprocket wheel 41 is rotationally driven, and the chain 49 rotates between the upper sprocket wheel 41 and the sprocket of the take-up device 53. Driven along the wheel 55, intermediate sprocket wheel 57, auxiliary sprocket wheel 87, rear sprocket wheel 35, front sprocket wheel 33, and auxiliary sprocket wheel 87 in the direction of arrow B in the figure,
The sand is scraped up by the bucket 51 to which the chain 49 is fixed, and the bucket 51 is moved to the sand transporter 3.
At a location above the bucket 9, the sediment in the bucket 51 is put into the sediment transport machine 39, and the sediment settled in the pond tank 31 is discharged from the sand transport machine 39 to the outside.

For example, if the amount of water flowing into the pond tank 31 increases due to heavy rain or the like, or if the use of the sand-settling and scraping device is to be stopped for a long time, the front swing arm 67 and the rear swing arm 69
However, the front sprocket wheel 33 and the rear sprocket wheel 3 located at the lower ends of these
5 is swung upward and positioned at the position shown by the two-dot chain line in the figure.

That is, when the drive device 83 is operated, the drive chain 85 is driven to rotate the power transmission sprocket wheel 81 fixed to the rear support shaft 65.
The rotation of the rear support shaft 65 causes the rear swing arm 69 fixed to the rear support shaft 65 to rotate by a predetermined angle, and the rear sprocket wheel disposed at the lower end of this rear swing arm 69 rotates. 35 moves upward.

The rotation of the rear support shaft 65 rotates the rear swing sprocket wheel 73, and the rotation of the rear swing sprocket wheel 73 is transmitted to the front drive sprocket wheel 71 via the annular transmission chain 75. The rotation of the forward swinging sprocket wheel 71 causes the front support shaft 63 to rotate, and the front swing arm 67 fixed to the front support shaft 63 to rotate the rear swing arm 6.
9, and the front sprocket wheel 33 disposed at the lower end of the front swing arm 67 moves upward as shown by the two-dot chain line in the figure.

Here, the annular conduction chain 75 is connected to the pond tank 31.
Since it is inserted through a pair of protective pipes 77 connected to the sides of the
The power from the drive device 83 transmitted via the rear swinging sprocket wheel 73 can be reliably transmitted to the forward swinging sprocket wheel 63.

In the sand settling and scraping device configured as described above, the front sprocket wheel 33 and the rear sprocket wheel 35 are mounted on the front support shaft 6 which is rotatably supported at both ends by the side wall 59 of the pond tank 31.
The front swing arm 67 and the rear swing arm 69 are respectively fixed to the front swing arm 67 and the rear support shaft 65.
An annular conduction chain 75 is inserted through a pair of protection pipes 77 connected to the sides of the pond tank 31 through the front swinging sprocket wheel 71 and the rear swinging sprocket wheel 73 which are respectively fixed to the rear support shaft 65. Furthermore, the power transmission sprocket wheel 81 was fixed to the rear support shaft 65, and the drive chain 85 for transmitting the power from the drive device 83 was wound around the power transmission sprocket wheel 81. The annular conduction chain 75 passes through the pair of protection pipes 77 without hanging down, and by driving the drive device 83, the front sprocket wheel 33 and the rear sprocket wheel 35 are moved upward, and the bucket cart 51 is moved upward. It becomes possible to easily move the passage upward of the pond tank 31, and the simple structure can reliably prevent the bucket 51 from being buried in the sludge.

In the embodiments described above, an example was explained in which the lower ends of the front swing arm 67 and the lower ends of the rear swing arm 69 were released, but the present invention is not limited to such embodiments, and Of course, the lower end of the arm 67 and the lower end of the rear swing arm 69 may be connected by a connecting arm.

[Effect of idea]

As described above, according to the present invention, the front sprocket wheel and the rear sprocket wheel are fixed to the front support shaft and the rear support shaft, respectively, which are rotatably supported at both ends on the side of the pond tank. A front swinging sprocket wheel and a rear swinging sprocket wheel are arranged at the lower ends of the swing arm and the rear swing arm, and are fixed to the front support shaft and the rear support shaft, respectively.
A ring-shaped conduction chain that passes through a pair of protective pipes connected to the side of the pond tank is wrapped around it, a power transmission sprocket wheel is fixed to the front support shaft or the rear support shaft, and the power transmission sprocket wheel is attached to the power transmission sprocket wheel. Since the drive chain that transmits the power from the power drive device is wrapped around, the simple structure can prevent the annular transmission chain from sagging and reliably prevent the bucket from being buried in the sludge. There is an advantage.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view showing an embodiment of the sand settling and scraping device of the present invention. FIG. 2 is a cross-sectional view of FIG. 1. FIG. 3 is a top view of FIG. 1. FIG. 4 is a top view showing the conduction chain of FIG. 1 and its vicinity. FIG. 5 is a longitudinal sectional view showing a conventional sand settling and scraping device. Explanation of symbols of main parts, 31...Pond tank, 33
...Front sprocket wheel, 35...Rear sprocket wheel, 39...Sand transporter, 41
...Upper sprocket wheel, 49...Chain, 51...Bucket, 63...Front support shaft, 6
5... Rear support shaft, 67... Front swing arm, 69... Rear swing arm, 71... Sprocket wheel for forward swing, 73... Sprocket wheel for rear swing, 75... Conduction chain, 81... Sprocket wheel for power transmission,
83... Drive device, 85... Drive chain.

Claims (1)

[Scope of claim for utility model registration] In the pond tank 31, there is a front sprocket wheel 33.
and rear sprocket wheels 35 are arranged at intervals in the horizontal direction, and the pond tank 31
The upper sprocket wheel 41 is arranged above, the front sprocket wheel 33, the rear sprocket wheel 35 and the upper sprocket wheel 41 are tied together, and the inside of the annular chain 49 is wound around the annular chain 49. A bucket 5 for scraping up sediment settled in the pond tank 31
1, the front sprocket wheel 33 and the rear sprocket wheel 35 are connected to a front support shaft 63 rotatably supported at both ends on the side surface of the pond tank 31.
and a front swing arm 67 and a rear swing arm 6 fixed to the rear support shaft 65, respectively.
A forward swinging sprocket wheel 71 and a rearward swinging sprocket wheel 7 are arranged at the lower end of the front support shaft 9 and fixed to the front support shaft 63 and the rear support shaft 65, respectively.
3, an annular conduction chain 7 that passes through a pair of protection pipes 77 connected to the sides of the pond tank 31;
5, and fix the power transmission sprocket wheel 81 to the front support shaft 63 or the rear support shaft 65, and to this power transmission sprocket wheel 81,
A sand raking device characterized in that a drive chain 85 for transmitting power from a power drive device 83 is wound around the drive chain 85.