JPH0728881Y2 - Sediment removal device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a sediment removing device.

[Conventional technology]

1 and 2 show a conventional settling basin 1, the side wall of which is vertical, but the bottom of the settling basin 1 has a V-shaped cross section with slopes 2 and 2 facing each other. The lower side thereof is a groove, and the groove opening 3 is formed at the upper end. A screw conveyor 4 is rotatably provided in the groove having the groove opening 3. The conveyor 4 includes an Ikegami drive device 7,
It is driven by the transmission shaft 8, the gearbox 9 and the joint 10. The screw conveyor 4 has a shaft and blades.
11, and one end is supported by the end bearing 13 and the middle is supported by the intermediate bearing 12. The sludge and sand 5 introduced into the settling basin 1 settle and are scraped by the screw conveyor 4 in one direction. After that, pit 6
It is guided inside and discharged by suction to the outside of the pond.

[Problems to be solved by the invention]

By the way, the settling basin up to now is the screw conveyor 4
Since the groove opening 3 was open above the whole surface,
When a large amount of sludge and sand flow in due to heavy rain, upstream land development work, etc., they enter the groove through the groove opening 3 and overload or disable the rotation of the screw conveyor 4.

In this case, the screw conveyor 4 is bent, and the blades 11 and the gear 9 are worn due to the eccentric movement.

Furthermore, if the screw conveyor 4 cannot rotate,
The function as a sedimentation basin stopped, and when that happened, the cumbersome work of removing sludge and sand by high-pressure jet cleaning became necessary.

This invention was made in order to solve such a problem, and the place of the problem is that even if a large amount of sludge and sand flow into the settling basin, the drive of the screw conveyor is always kept smooth, The purpose is to prevent damage to each part and to maintain the function as a sedimentation pond.

[Means for Solving the Problems]

In order to solve the above-mentioned problems, the present invention is such that the bottom of a sedimentation pond is narrowed to form a slope with a V-shaped cross section, the lower side of which is a groove for rotatably housing a screw conveyor, and the upper end of the groove is a groove. A sediment removing device configured to remove sludge, sand, and other sediments settling in a sedimentation basin through the groove by the screw conveyor, in the center of the width of the groove opening. A spindle parallel to the screw conveyor is provided at a corresponding position, and the spindle extends individually toward each of the V-shaped slopes, and the spindles have opposite V-shapes.
A pair of lids forming a letter shape is provided, and both lids can move up and down at the same time about the main shaft so as to cover the groove opening from above and leave a small gap with respect to the slope. It is characterized by being.

〔Example〕

Hereinafter, the present invention will be described in detail with reference to the illustrated embodiments.

3 and 4 show an embodiment of the present invention. As shown in the embodiment, 1 is a settling basin, and the side wall of the settling basin 1 is vertical, but the bottom of the settling basin 1 has a V-shaped cross section with slopes 2 and 2 facing each other. The lower side is a groove, and the groove opening 14 is formed at the upper end. This groove opening 14
The screw conveyor 4 is rotatably provided in the groove 38 having a groove.

Although not shown, the conveyor 4 is driven by a drive device for the pond, a gear box 9, and the like.

The screw conveyor 4 is composed of a shaft portion and blades, one end of which is supported by an end bearing 9, and the middle of which is supported by an intermediate bearing 12. Sludge introduced into sedimentation basin 1,
The sand 5 settles and is scraped by the screw conveyor 4 in one direction. After that, it is guided into the pit 6 and discharged by suction to the outside of the pond.

In such a settling basin 1, a settling control device is constructed as follows.

That is, 21 is a main cylinder, which is installed on the upper wall 24 of the pond and is provided to raise and lower the cylinder 22. Reference numeral 23 is a sub-cylinder, which moves the rod 20 independently through the inside of the cylinder 22. These cylinders are installed at two locations in the longitudinal direction of the pond.

The main shaft 16 is attached via the lower end of the cylinder 22. The main shaft 16 is provided parallel to the screw conveyor 4 at a position corresponding to above the width center of the groove opening 14 and is provided long in the pond. The main shaft 16 is lifted and lowered by the operation of the main cylinder 21 to move the cylinder 22 up and down. To be

The main shaft 16 extends individually toward each slope 2 and the opposite V
A pair of lids 15 and 15 that form a letter shape are provided, and both lids 1
5 and 15 are capable of simultaneously moving up and down about the main shaft 16 so as to cover the groove opening 14 from above and leave a small gap 27 with respect to the slope 2.

Supports 18 and 19 are provided on the inner surfaces of the lids 15 and 15, and support plates 17 and 17 are provided via the support points 18 and 19.

These support plates 17, 17 are connected to each other, and the lower end of the rod 20 is connected to this connection point.

Therefore, when the rod 20 moves up and down, the connecting point moves up and down, the lids 15 and 15 are opened by the rise, and the lid 1 is lowered by the drop.
5,15 are designed to be closed. As a result, by driving and controlling both cylinders 21 and 23, the lids 15 and 15 can be raised and lowered as a whole and can be opened and closed freely.

As a result, the groove opening 14 can be controlled so that the gap 27 becomes large or small.

In addition, fall prevention pedestals 25, 25 are provided at the front and rear ends of the groove opening 14 to prevent the lids 15, 15 from falling.
Further, in order to prevent the abrasion due to the eccentric movement of the screw conveyor 4, a stabilizer 35 is attached to a part of the outer circumference of the conveyor 4, a fall prevention platform 25 is provided on the pond, and rollers 36 supported by this support the screw conveyor 4. By pressing down, the eccentric movement is effectively suppressed.

Furthermore, in order to prevent sludge from accumulating and solidifying around the inside 28 of the lids 15 and 15 and the groove 38 and further around the bearing portion 9 to hinder the rotation of the screw conveyor 4, as shown in FIG. One end 29 of the rotary joint 30
While being inserted and supported, the water pipe 32 is projected on the outer periphery of the screw conveyor 4 via the mounting portion 31 so that its mouth 33 is directed to the location where the sludge accumulates.

When high-pressure water or air is sent through the rotary joint 30, these fluids are ejected from the mouth 33 through the internal space of the screw conveyor 4 and the water passage pipe 32, whereby the ejected fluid is discharged to the place where the sludge accumulates. It comes to wash while rotating. The lids 15 and 15 may be opened and closed by a clevis-type hydraulic cylinder 34 as shown in the right drawing of FIG.

[Effect of device]

The invention is as described above. Therefore, even if a large amount of sludge and sand flow into the sedimentation pond, the screw conveyor is always driven smoothly, preventing damage to each part, and You will be able to keep functioning.

That is, instead of opening and closing the lids, there is always a gap between the pair of inverted V-shaped lids and the slopes so that the sediments flow down in the direction of the screw conveyor. Does not load the screw conveyor at one time. When there is a large amount of sediment, both lids can be lifted to temporarily accumulate the sediment on it, and when the load is low, the sediment accumulated on the screw conveyor can be fed. Therefore, even when there is a large amount of precipitate, the load on the screw conveyor does not rise abnormally. Therefore, the capacity of the drive motor of the screw conveyor can be small, and the power consumption can be small.Furthermore, the shaft and blades of the screw conveyor, the transmission mechanism, etc. can be manufactured at a low cost by anticipating a light load. It becomes.

[Brief description of drawings]

FIG. 1 is a side sectional view showing a conventional settling basin, FIG. 2 is a sectional view taken along the line AA of FIG. 1, FIG. 3 is a side sectional view showing an embodiment of the present invention, and FIG. 5 is a sectional view taken along the line AA of FIG. 5, and FIG. 5 is an enlarged view showing a pressing roller device and a fluid ejection device. 1 ... Sedimentation pond, 2 ... Slope, 4 ... Screw conveyor, 5 ... Sludge, sand, 14 ... Groove opening, 15 ... Lid, 38 ...
groove

Claims (1)

[Scope of utility model registration request] 1. A bottom of a sedimentation tank is narrowed to form a slope having a V-shaped cross section, a lower side of which is a groove for rotatably accommodating a screw conveyor, and an upper end of the groove is a groove opening. A sediment removing device configured to remove sediment such as sludge and sand settling in a sedimentation pond through the groove by the screw conveyor, the screw conveyor being located at a position corresponding to the width center of the groove opening. Is provided with a parallel shaft-shaped main shaft, and the main shaft is provided with a pair of lids that individually extend toward each of the V-shaped slopes and that form a reverse V-shape. A deposit removing device, which is capable of simultaneously moving up and down about the main shaft so as to cover the groove opening from above and leave a small gap with respect to the slope.