JPH07100124B2 - 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. 3 shows this type 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 sand is accumulated on the bottom of the pond tank 11, the bucket 29 of the sand settling device is buried in the sand, which causes an overload during operation, and it cannot perform its function and must be stopped. .

An object of the present invention is to solve the above problems and to provide a sand settling device that can reliably prevent a bucket from being buried in the settling sand.

[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 front support shaft and the rear support shaft, and the front swing arm and the rear swing arm are connected to the connecting member. Rotatably connected by And an upper connecting arm and a lower arm between the front side upper arm and the rear side lower arm, and between the front side lower arm and the rear side lower arm. The lower arm is connected by a lower connecting arm, while the lower arm is configured to be hoistable by an arm hoisting device, and at least the movement of the upper arm is restricted by a movement blocking member.

[Work]

In the present invention, for example, when the amount of inflow water into the pond tank increases due to heavy rain, or when the use of the sand settling device is stopped for a long period of time, the operation of the arm hoisting device causes The arms are moved upward, and the lower arms of the front swing arm and the rear swing arm are
The front sprocket wheel and the rear sprocket wheel, which are respectively arranged at their lower ends, are swung so as to move upward.

And when it is expected that the amount of sedimentation will increase,
Further, the arm hoisting device is operated and the lower arm is moved upward, whereby the upper arms of the front swing arm and the rear swing arm are swung, and the front sprocket wheel and the rear sprocket wheel are moved further upward. .

〔Example〕

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

FIG. 1 and FIG. 2 show one embodiment of the settling / raising device of the present invention. In these figures, reference numeral 31 indicates a pond tank for settling sand in 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-out machine 39 for discharging settling sand is arranged, and above this, an upper swivel wheel 41 which is a sprocket wheel for driving is arranged. .

That is, the drive shaft (not shown) of the upper sprocket wheel 41 has a structure in which the power from the drive device is transmitted through the drive chain.

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.

An intermediate sprocket wheel 57 is arranged below the take-up device 53.

The intermediate sprocket wheel 57 is rotatably fixed to one end of a rotating member 59, and the other end of the rotating member 59 is rotatably fixed to a side wall 61 of the pond tank 31.

Further, angle regulating members 60 and 62 for regulating the rotation angle of the rotating member 59 are arranged above and below the rotating member 59 with the rotating member 59 sandwiched therebetween.

Thus, in this embodiment, the front sprocket wheel
33 and the rear sprocket wheel 35
Also, they are arranged at the lower ends of the front swing arm 67 and the rear swing arm 69 that rotate around the rear support shaft 65.

The front swing arm 67 and the rear swing arm 69 are divided into upper arms 71 and 72 and lower arms 73 and 74, respectively.
3, 74 are rotatably connected by a connecting member 75 made of a pin.

Further, between the front upper arm 71 and the rear upper arm 72, and between the front lower arm 73 and the rear lower arm 74.
The upper connection arm 77 and the lower connection arm 78 are connected between and.

Further, on both sides of the front upper arm 71, movement blocking members 81, 8 for blocking the movement of the upper arm 71 by a predetermined angle or more are provided.
2 is arranged, on the front side of the lower arm 73 on the front side,
A movement blocking member 83 for restricting the forward movement of the lower arm 73 is arranged.

In addition, on the upper side of the rear lower arm 74, the lower arm 74
A movement preventing member 84 for restricting the upward movement of the is arranged.

In this embodiment, the front support shaft 63 and the rear support shaft are
Auxiliary sprocket wheels 85 and 86 are arranged on the 65, respectively.

Further, in this embodiment, the lower arm 74 is configured to be hoistable by the arm hoisting device 87.

That is, one end of a chain 89 that constitutes the arm hoisting device 87 is connected to the lower end of the lower arm 74 on the rear side.

The other end of the chain 89 is connected to the winding device 94 arranged on the upper surface of the lid portion 37 of the pond tank 31 via the sprocket wheels 90, 91, 92, 93.

The sprocket wheel 93 is movable in the vertical direction, and the excess chain generated by winding the chain 89
The 89 is absorbed by moving the sprocket wheel 93 downward by its own weight.

In the sand setting device configured as described above, when the drive device that rotationally drives the upper sprocket wheel 41 is driven, the chain 49 causes the upper sprocket wheel 41,
Sprocket wheel 55 of take-up device 53, intermediate sprocket wheel 57, auxiliary sprocket wheel 86, rear sprocket wheel 35, front sprocket wheel 3
3, along the auxiliary sprocket wheel 85, driven in the direction of the arrow B in the figure, the sand 51 is scraped up by the bucket 51 fixed to the chain 49, and the bucket 51 is located above the sand unloader 39. The sand settled in 51 is input to 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 the like, or when the use of the sand settling device is stopped for a long time, a winding device that constitutes the arm hoisting device 87. 94 is driven, which causes the sprocket wheel
92 rotates, chain 89 sprocket wheels 90, 91
Via the take-up device 94 and the rear lower arm 74
Is moved upward, which causes the lower arms 73 and 74 of the front swing arm 67 and the rear swing arm 69 to move.
However, the front sprocket wheel 33 and the rear sprocket wheel 35, which are respectively arranged at their lower ends, are swung so as to move upward, and are positioned at the position shown by the two-dot chain line in the middle of the figure.

And when it is expected that the amount of sedimentation will increase,
Further, the arm hoisting device 87 is actuated and the lower arm 74 is moved upward, whereby the upper arms 71 and 72 of the front swing arm 67 and the rear swing arm 69 are swung, and the two-dot chain line is shown in the upper stage of the figure. It is located at the position indicated by.

Incidentally, in this embodiment, when the sand settling device is located at the deepest part of the pond tank 31, the upper arm 71 and the lower arm 73 of the front swing arm 67 are respectively prevented from moving.
When the settling device is located at the top of the pond tank 31, the turning position is restricted to a predetermined position by 1,83, while the upper arm 71 of the front swing arm 67 and the lower arm of the rear swing arm 69 are positioned. 74 are the movement preventing members 82 and 84, respectively
The rotation position is restricted by the predetermined position.

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 front support shaft 63 and the rear support shaft 65, and these front swing arms 67 are also arranged. And the rear swing arm 69 to the connecting member.
It is divided into upper arms 71 and 72 and lower arms 73 and 74 which are rotatably connected by 75, and the upper arm 71 on the front side is further divided.
And the rear upper arm 72, and between the front lower arm 73 and the rear lower arm 74.
And the lower connecting arm 78, and the rear lower arm 74 is configured to be hoistable by the arm hoisting device 87, and at least the movement of the upper arm 71 is restricted by the movement blocking member 81. Therefore, by operating the arm hoisting device 87 and moving the front sprocket wheel 33 and the rear sprocket wheel 35 upward, it is easy to move the passage of the bucket 51 upward of the pond tank 31. It is possible to reliably prevent the bucket 51 from being buried in the sand.And, the front swing arm 67 and the rear swing arm 69 are divided into the upper arms 71 and 72 and the lower arms 73 and 74, Between the front upper arm 71 and the rear upper arm 72,
Further, since the lower arm 73 on the front side and the lower arm 74 on the rear side are connected by the upper connecting arm 77 and the lower connecting arm 78, the front sprocket wheel 33 and the rear sprocket wheel 35 are roughly divided into two stages. Since it can be moved upwards, the ascending stroke can be made extremely large, and the present invention can be sufficiently applied to the deep pond tank 31.

In addition, in the sand settling device configured as described above, the operation is performed with the front and rear swing arms 67 and 69 processed, and the swing arms 67 and 69 are stopped at the upper limit position. Every time, it is possible to perform the operation of gradually lowering the sand when picking up the sand, so that it is possible to easily cope with various conditions.

Further, in the sand settling device configured as described above, since the front and rear swing arms 67 and 69 swing in two steps, it is possible to secure a large swing amount and obtain a large burial prevention effect. It becomes possible.

Further, in the sand settling device configured as described above, since the front and rear swing arms 67 and 69 swing in two steps, it becomes possible to secure a large swing amount,
Inspection and maintenance are very easy.

In the embodiment described above, an example in which the rotation of the front upper arm 71, the lower arm 73 and the rear lower arm 74 is restricted by the movement preventing members 81, 82, 83, 84 has been described. The invention is not limited to such an embodiment, and it goes without saying that the movement blocking member may be added or deleted according to the operating conditions.

Further, in the embodiment described above, the arm hoisting device 87 is described as an example constituted by the chain 89, but the present invention is not limited to such an embodiment, and various other types such as a wire rope. Of course, it may be configured by means.

As described above, according to the present invention, the front sprocket wheel and the rear sprocket wheel are provided at the lower ends of the front swing arm and the rear swing arm that rotate about the front support shaft and the rear support shaft. The front swing arm and the rear swing arm are arranged and divided into an upper arm and a lower arm that are rotatably connected by a connecting member, and further, a front upper arm and a rear upper arm are provided. And the lower arm on the front side and the lower arm on the rear side are connected by an upper connecting arm and a lower connecting arm, while the lower arm is configured to be hoistable by an arm hoisting device, Since the movement of the arm is regulated by the movement prevention member, it is possible to reliably prevent the bucket from being buried in the settling sand. The advantage is that

[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 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 63 …… Front Support shaft 65 …… rear support shaft 67 …… front swing arm 69 …… rear swing arm 71, 72 …… upper arm 73, 74 …… lower arm 75 …… connecting member 77 …… upper connecting arm 78 …… lower side Connection arm 81 …… Movement prevention member 87 …… Arm hoisting device.

Claims (1)

[Claims] 1. A front sprocket wheel and a rear sprocket wheel are horizontally spaced in a pond tank, and an upper sprocket wheel is arranged above the pond tank to form the front sprocket wheel and the rear sprocket wheel. And the upper sprocket wheel is tied, the inner side of an annular chain is wound, and a bucket for picking up the settling sand settled in the pond is fixed to this chain, the front sprocket wheel and the rear sprocket wheel The wheel
The front swing arm and the rear swing arm are arranged at the lower ends of the front swing arm and the rear swing arm that rotate about the front support shaft and the rear support shaft, and the front swing arm and the rear swing arm are rotatably connected by a connecting member. It is divided into an upper arm and a lower arm, and further, between the front upper arm and the rear upper arm, and between the front lower arm and the rear lower arm, the upper connecting arm and the lower arm. Connected by side connecting arm, while
A sand settling device, wherein the lower arm is configured to be hoistable by an arm hoisting device, and at least the movement of the upper arm is restricted by a movement preventing member.