JPH07100122B2 - 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 drainage equipment, etc., a pond tank is provided in order to settle the sand in the inflow water, and in this pond tank, a sand settling device for scraping sand is arranged. There is.

An example of such a settling device is,
Those disclosed in Japanese Patent No. 73504 or Japanese Utility Model Laid-Open No. 56-90906 are known.

FIG. 3 shows this kind of sand settling device, and in the figure, reference numeral 11 shows a pond tank for sinking the sand in the inflow water. Inside the pond tank 11, a plurality of sprocket wheels 15 for guiding the chain 13 are arranged. The chain 13 has a bucket that scoops up the sand that has settled in the pond tank 11.
17 is stuck. In the figure, reference numeral 19 indicates a driving sprocket wheel for moving the chain 13.

[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, A large amount of sludge accumulated on the bottom of the pond tank 11,
There was a problem that the bucket 17 of the sand settling device was buried in the sludge and was overloaded during operation, and it could not perform its function and was forced to stop.

[Object of the Invention]

The present invention solves the above problems, and an object of the present invention is to provide a sand settling device that can reliably prevent a bucket from being buried in sludge.

[Means for solving problems]

A sand settling device according to the present invention has first and second sprocket wheels for guiding a chain spaced apart in a pond tank, and scoops up the settling sand settled in the pond tank to the chain. In a sand settling device having a fixed bucket, the first and second sprocket wheels are arranged at the lower ends of first and second swing arms that rotate about a support shaft, and The upper ends of the first and second swing arms are connected to one ends of first and second moving arms that rotate the first and second swing arms, and the first and second moving arms are connected to each other. The other end of the arm is connected to both ends of a rotating member that rotates about a support shaft, and the rotating member is rotated by a rotating mechanism.

[Operation of the invention]

In the present invention, the first and second sprocket wheels are arranged at the lower ends of the first and second rocking arms that rotate about the support shaft, and the first and second rocking arms are arranged. To one end of the first and second moving arms that rotate the first and second swing arms, and the other ends of the first and second moving arms are connected to the support shaft. Since the rotating member is connected to both ends of the rotating member, and the rotating member is rotated by the rotating mechanism, when the rotating mechanism is rotated, the rotating member rotates about the support shaft. Rotate. The rotation of the rotating member moves the first and second moving arms, and as a result, the first and second moving arms are moved.
The first and second rocking arms arranged at the lower end of the sprocket wheel of No. 3 rock on the support shaft, and the first and second sprocket wheels move to the upper part of the pond tank. Therefore, when it is expected that a large amount of sand will be deposited on the bottom of the pond, the first and second rocking arms are swung in advance, and the first and second sprocket wheels are moved to the upper part of the pond. By arranging it in the above position, it is possible to reliably prevent the bucket from being buried.

Example of Invention

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

FIG. 1 shows a settling device according to the present invention. In the figure, reference numeral 21 denotes a pond tank for settling sludge. In the pond 21, first and second sprocket wheels 25, 27 for guiding the chain 23 are arranged at intervals. A bucket 29 for scooping up the sediment settling in the pond tank 21 is fixed to the chain 23.

Therefore, in this sand settling device, the first and second sprocket wheels 25, 27 rotate to the lower ends of the first and second swing arms 33, 35 which rotate about the support shaft 31. Arranged freely. First and second swing arm 3
At the upper end of 3,35, these first and second swing arms 3
One ends of the first and second moving arms 37 and 39 that rotate the 3,35 are connected. The other ends of the first and second moving arms 37 and 39 are connected to both ends of a rotating member 43 which rotates about a support shaft 41. The rotating member 43 is rotatable by a rotating mechanism 45.

The rotating mechanism 45 includes an arc-shaped worm gear 47 in which the rotating member 43 is integrally formed, and a worm that meshes with the worm gear 47.
It is composed of 49 and a motor 51 for rotating the worm 49.

In the sand setting device constructed as above, in the position shown by the solid line in FIG. 1, that is, in the state where the first and second sprocket wheels 25, 27 are at the bottom of the pond tank 21,
When the motor 51 of the rotating mechanism 45 is driven, the worm 49 rotates, the rotation of the worm 9 causes the worm gear 47 to rotate, and the rotating member 43 has the support shaft 41 as the center and the arrow A direction in the drawing. Turn to. By the rotation of the rotation member 43, the first and second moving arms 37, 39 move in the direction of arrow B in the figure,
As a result, the first and second swing arms 33, 35 having the first and second sprocket wheels 25, 27 at their lower ends are arranged.
Swings around the support shaft 31 in the direction of arrow C in the figure, and the first and second sprocket wheels 25, 27 move to the upper part of the pond tank 21 as shown by the chain double-dashed line in the figure. Will be done.

Therefore, when it is expected that a large amount of sludge or the like will be deposited on the bottom of the pond tank 21, the first and second swing arms are previously set.
By swaying 33, 35 and arranging the first and second sprocket wheels 25, 27 above the pond tank 21, it is possible to reliably prevent the bucket 29 from being buried.

By rotating the motor 51 in the reverse direction, the first and second swing arms 33, 35 rotate in the opposite direction to the arrow C. Therefore, the reverse rotation of the motor 51 causes the bucket 29 to move into the pond tank 21. It can be easily returned to the bottom of the.

Also, with the bucket 29 fried above the pond tank 21,
When a large amount of sludge has accumulated in 21, the first and second swing arms 33, 35 are gradually rotated to the opposite side of the arrow C in the figure to respond to the load of the sand settling device. The sludge can be lifted up.

FIG. 2 shows a rotating mechanism according to another embodiment of the present invention. In this embodiment, the rotating mechanism has a protruding portion 55 protruding from the central portion of the rotating member 53 and the protruding portion 55. And a cylinder 59 that moves the piston rod 57.
Is supported by a bracket 61 formed on the upper part of the.

In the sand setting device constructed as above, the cylinder 59
When hydraulic pressure or air pressure is applied to the piston rod 57, the rotating member 53 rotates. Also in such a sand settling device, it is possible to obtain substantially the same effect as that of the sand settling device shown in FIG.

In addition, in the embodiment described above, the example in which the present invention is applied to the scooping of sludge has been described, but the present invention is not limited to such an embodiment, and, for example, mud or other sedimented substances may be used. Of course, it is also good.

〔The invention's effect〕

As described above, according to the present invention, the first and second sprocket wheels are arranged at the lower ends of the first and second swing arms that rotate about the support shaft, and the first and second sprocket wheels are provided. And the first and second pivoting arms for pivoting the first and second pivoting arms on the upper end of the second pivoting arm.
One end of the moving arm is connected, and the other ends of the first and second moving arms are connected to both ends of a rotating member that rotates about a support shaft, and the rotating member is a rotating mechanism. Since it is rotated by the above, there is an advantage that it is possible to surely prevent the bucket from being buried.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of the sand settling device of the present invention, FIG. 2 is a side view showing another embodiment of the sand settling device of the present invention, and FIG. 3 is a conventional settling sand picking device. It is a longitudinal cross-sectional view showing an apparatus. 25,27 …… Sprocket wheel, 31,41 …… Support shaft, 3
3,35 …… Swing arm, 37,39 …… Movement arm, 43,53 ……
Rotating member, 45 ... Rotating mechanism, 47 ... Worm gear, 49 ...
… Worms, 51 …… motors, 55 …… piston rods.

Claims (3)

[Claims] 1. A first and a second sprocket wheel for guiding a chain are arranged at intervals in a pond tank, and a bucket for sticking up settling sand settled in the pond tank is fixed to the chain. In the sand settling device, the first and second sprocket wheels are arranged at the lower ends of the first and second swing arms that rotate about a support shaft, and the first and second sprocket wheels are provided. The upper ends of the swing arms are connected to one ends of first and second moving arms that rotate the first and second swing arms.
And the other end of the second moving arm is connected to both ends of a rotating member that rotates about a support shaft, and the rotating member is rotated by a rotating mechanism. . 2. The sand setting device according to claim 1, wherein the rotating mechanism includes an arc-shaped worm gear, a worm that meshes with the worm gear, and a motor that rotates the worm. 3. The sand setting device according to claim 1, wherein the rotating mechanism has a protruding portion protruding from the central portion of the rotating member, and a piston rod connected to the protruding portion.