JPH07100123B2 - Settling device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a sand settling device for scooping up sedimented substances such as sand settled in a pond tank.

[Conventional technology]

Generally, in sewage treatment equipment, industrial wastewater equipment, etc., a pond tank is provided to settle the sand in the inflow water, and in this pond tank, a sand settling device is arranged to scoop up the settled sand. Has been done.

An example of such a sand settling device is, for example, SAIkai 55-
Those disclosed in 133205, Japanese Utility Model Publication No. 56-14613, etc. are known.

FIG. 4 shows this kind of sand settling device, and in the figure, reference numeral 11 indicates a pond tank for sinking the sand in the inflow water flowing in from the arrow A direction.

In the pond tank 11, a front sprocket wheel 13 and a rear sprocket wheel 15 are horizontally arranged at intervals.

On the other hand, on the top surface of the lid 17 of the pond tank 11, a sand settling machine 19 for discharging the settling sand is arranged, and above this, an upper sprocket wheel 21 which is a sprocket wheel for driving.
Are arranged.

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

An annular chain 27 is wound around by connecting the front sprocket wheel 13, the upper sprocket wheel 21, the sprocket wheels 23, 25 and the rear sprocket wheel 15, and the chain 27 scratches the sediment settling in the pond tank 11. The frying bucket 29 is fixed.

In such a sand settling device, the chain 27 is driven by the upper sprocket wheel 21 in the direction of arrow B in the figure, and the settling sand is scraped up by the bucket 29 fixed to the chain 27, and the bucket 29 is moved to the sand settling device 19. At the place located above, the sediment in the bucket 29 is loaded into the sediment transporter 19, and the pond tank 11
The settling sand settled inside is discharged to the outside from the settling sand carrier 19.

[Problems to be Solved by the Invention]

However, in such a conventional sand settling device, for example, when the amount of inflow water into the pond tank 11 increases due to heavy rain, or when the use of the sand settling device is stopped for a long time, There is a problem that a large amount of sludge etc. accumulates on the bottom of the pond tank 11, the bucket 29 of the sand settling device is buried in the sludge, becomes overloaded during operation, and its function cannot be exerted and it is forced to stop. .

The present invention has solved the above problems, and an object thereof is to provide a sand settling device that can reliably prevent a bucket from being buried in sludge with a simple configuration.

[Means for Solving the Problems]

The sand settling device according to the present invention has a front sprocket wheel and a rear sprocket wheel that are horizontally spaced in a pond tank, and an upper sprocket wheel that is arranged above the pond tank. In the sand settling device in which the wheel, the rear sprocket wheel and the upper sprocket wheel are connected to each other, the inner side of the annular chain is wound, and a bucket for scooping up the settling sand settled in the pond is fixed to the chain. The sprocket wheel and the rear sprocket wheel are arranged at the lower ends of the front swing arm and the rear swing arm that rotate around the support shaft, and the swing mechanism that swings these front swing arm and the rear swing arm is arranged. And then
One end of a tension arm is rotatably connected to the front swing arm, and the other end of the tension arm is connected to an open end of a link member that rotates about a support shaft. A tension applying member is arranged to come into contact with the outside of a portion of the chain located between the upper sprocket wheel and the rear sprocket wheel.

[Work]

In the present invention, for example, when the amount of water flowing into the pond tank increases due to heavy rain, or when the use of the sand settling device is stopped for a long time, the swing mechanism is used to move the front swing arm and the rear swing arm. The swing arms are swung so that the front sprocket wheel and the rear sprocket wheel respectively located at their lower ends move upward.

Then, the tension arm and the link member are moved by the swing of the front swing arm, whereby the connecting portion between the tension arm and the link member is positioned at a predetermined position, and the chain is provided by the tension applying member arranged at this connecting portion. A predetermined tension is applied to.

〔Example〕

An embodiment of the present invention will be described below in detail with reference to the drawings.

1 to 3 show one embodiment of the sand settling device of the present invention, in which the reference numeral 31 indicates a pond tank for sinking the sand in the inflow water. .

In the pond tank 31, a front sprocket wheel 33 and a rear sprocket wheel 35 are horizontally arranged at intervals.

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

The drive shaft 43 of the upper sprocket wheel 41 has a drive device
The power from 45 is transmitted via the drive chain 47.

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 wound around the chain.
In 49, a bucket for scooping up the sediment settling in the pond tank 31.
51 is stuck.

In this embodiment, a take-up device 53 is arranged at a distance from the upper sprocket wheel 41 in the horizontal direction, and the tension of the chain 49 is adjusted by moving the sprocket wheel 55 in the horizontal direction.

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

Thus, in this embodiment, the front sprocket wheel
33 and the rear sprocket wheel 35 are on the side wall of the pond tank 31.
They are arranged at the lower ends of a front swing arm 67 and a rear swing arm 69 that rotate around support shafts 63 and 65 fixed to 59.

The front swing arm 67 and the rear swing arm 69 can be swung by a swing mechanism 71.

That is, the front swing arm 67 and the rear swing arm
69 is connected at its open end side by a connecting arm 73, and a wire rope is provided at an intermediate portion of the connecting arm 73.
One end of 75 is connected.

The other end of the wire rope 75 is the lid of the pond tank 31.
37 It is connected to the winding drum 79 of the winding device 77 arranged on the upper surface of the winding device 79.
It is freely rotatable via 83.

At the lower end of the front swing arm 67, the tension arm 85
Has one end rotatably connected, and the other end of the tension arm 85 is connected with an open end of a link member 87 that rotates about a support shaft 61 that supports the intermediate sprocket wheel 579. .

At this connecting portion, a tension applying member 89 is arranged to come into contact with the outside of the portion of the chain 49 located between the upper sprocket wheel 41 and the rear sprocket wheel 35.

The tension applying member 89 is a sprocket wheel that rotates around the connecting portion, and a weight member 91 is arranged at the lower end of the link member 87.

In the sand settling device configured as described above, the drive device 45
When the upper sprocket wheel 41 is driven, the upper sprocket wheel 41 is rotationally driven, and the chain 49 moves the upper sprocket wheel 41.
41, the sprocket wheel 55 of the take-up device 53, the intermediate sprocket wheel 57, the tension applying member 89, the rear sprocket wheel 35, and the front sprocket wheel 33 are driven in the arrow B direction in the figure and fixed to the chain 49. The bucket 51 scoops up the sand and the bucket 51
The sand settled in the bucket 51 is input to the sand settler 39 at a position above the sand settler 39, and the settling sand settled in the pond tank 31 is discharged to the outside from the sand settler 39.

Then, for example, when the amount of water flowing into the pond tank 31 is increased due to heavy rain, or when the use of the sand settling device is stopped for a long time, the hoisting device that constitutes the rocking mechanism 71.
The take-up drum 79 of 77 is rotated by the drive device 81, whereby the wire rope 75 is taken up by the take-up drum 79, and the connecting arm 73 is moved upward, whereby the front swing arm 67 and the rear swing arm 69 are moved. The front sprocket wheel 33 and the rear sprocket wheel 35 arranged at the lower ends of these are rocked so as to move upward, and are positioned at the positions shown by the chain double-dashed line in the figure.

Then, by swinging the front swing arm 67, the tension arm 85 and the link member 87 are moved to the position shown by the chain double-dashed line in the figure, whereby the tension arm 85 and the link member 87 are arranged at the connecting portion between the tension arm 85 and the link member 87. The tension applying member 89 is located at a predetermined position of the chain 49, and the weight member 91 fixed to the link member 87 applies a predetermined tension to the chain 49.

Then, in the sediment setting device configured as described above,
The front sprocket wheel 33 and the rear sprocket wheel 35 are arranged at the lower ends of the front swing arm 67 and the rear swing arm 69 which rotate about the support shafts 63 and 65, and the front swing arm 67 and the rear swing arm 67 are arranged. Since the rocking mechanism 71 for rocking the 69 is arranged, the rocking mechanism 71 is activated to operate the front sprocket wheel.
By moving the 33 and the rear sprocket wheel 35 upward, it becomes possible to easily move the passage of the bucket 51 upward of the pond tank 31, and the bucket 51 is buried in the sludge with a simple structure. It can be surely prevented.

Further, one end of the tension arm 85 is rotatably connected to the front swing arm 67, and the other end of the tension arm 85 is connected to the support shaft of the intermediate sprocket wheel 57.
A release member of a link member 87 that rotates around 61 is connected, and a tension applying member that abuts on the outside of a portion of the chain 49 that is located between the upper sprocket wheel 41 and the rear sprocket wheel 35. Since 89 was placed,
Even when the front swing arm 67 and the rear swing arm 69 move, it is possible to apply optimum tension to the chain 49.

In the embodiment described above, the swing mechanism 71 is described as an example in which the connecting arm 73, the wire rope 75, the drive device 81 and the like are configured, but the present invention is not limited to the embodiment. Of course, it may be configured by various other means.

Further, in the embodiment described above, the example in which the tension applying member 89 is configured by the sprocket wheel has been described.
The present invention is not limited to such an embodiment, and it goes without saying that a member such as a throttle wheel or shoe may be used instead of the sprocket wheel.

〔The invention's effect〕

As described above, according to the present invention, the front sprocket wheel and the rear sprocket wheel are arranged at the lower ends of the front swing arm and the rear swing arm that rotate about the support shaft, and these front swing arms are arranged. And a swinging mechanism for swinging the rear swing arm. Further, one end of the tension arm is rotatably connected to the front swing arm, and the other end of the tension arm rotates about the support shaft. Since the open ends of the moving link members are connected and the tension applying member that is in contact with the outside of the portion of the chain located between the upper sprocket wheel and the rear sprocket wheel is arranged at this connecting portion, a simple structure allows There is an advantage that it is possible to reliably prevent the bucket from being buried in the sludge.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view showing an embodiment of the settling device of the present invention. FIG. 2 is a cross-sectional view of FIG. FIG. 3 is a top view of FIG. FIG. 4 is a longitudinal sectional view showing a conventional sand settling device. [Explanation of symbols for main parts] 31 …… Iketan 33 …… Front sprocket wheel 35 …… Back sprocket wheel 39 …… Sand transporter 41 …… Upper sprocket wheel 49 …… Chain 51 …… Bucket 61,63, 65 …… Support shaft 67 …… Front swing arm 69 …… Rear swing arm 71 …… Swing mechanism 85 …… Tension arm 87 …… Link member 89 …… Tension applying member.

Claims (1)

[Claims] 1. A front sprocket wheel and a rear sprocket wheel are horizontally spaced in the pond tank, and an upper sprocket wheel is arranged above the pond tank to form the front sprocket wheel and the rear sprocket wheel. In the sand settling device comprising a wheel and an upper sprocket wheel connected to each other, the inner side of an annular chain is wound, and a bucket for raising the settling sand settled in the pond is fixed to the chain. The wheels are arranged at the lower ends of the front swing arm and the rear swing arm that rotate around the support shaft, and the swing mechanism that swings the front swing arm and the rear swing arm is arranged. Attach the tension arm to the front swing arm. One end of the chain is rotatably connected, and the other end of the tension arm is connected to an open end of a link member that rotates about a support shaft, and the connecting portion is connected to the upper sprocket wheel of the chain. A sand settling device, wherein a tension applying member is arranged so as to abut against the outside of a portion located between the rear sprocket wheel and the rear sprocket wheel.