JPH0447229Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a bar rotating screen that continuously captures and removes submerged debris in seawater or river water intake channels.

Conventional technology Power plants, LNG terminals, water purification plants, etc. take in large amounts of seawater or river water, but since the debris in the water is a hindrance to these facilities, it is continuously removed using a canal dust remover at the intake canal entrance. The capture has been removed. Several types of waterway dust removers have been used in the past, but one that has been particularly used recently is the bar rotating screen. In this system, a plurality of baskets each having an overbody shaped like a bar grid are continuously connected to two endless carrier chains on the left and right sides, and these baskets are suspended from sprockets installed at the top and bottom, and are circulated in and out of the water to remove dust. It is something.
The bar rotary dust remover has the advantage of being able to inspect the basket and clean the dust adhering to the bar rack on the ground compared to the bar screen with rake that has been used for a long time, but on the other hand, it has the following disadvantages: It also has drawbacks.

The problem that the invention aims to solve: In the conventional bar rotating screen, the basket connected to the carrier chain captures the dirt in the water, rises, turns over at the upper sprocket position, and moves downward in the direction of travel. The garbage on the bar rack is rotated to the discharge position and discharged into the garbage trough installed below, but while the basket is being turned over and removed by the upper sprocket, the garbage on the bar rack is removed. Since the position changes at the same time as the position changes, some of the dust passes through the slit gap in the bar rack and falls before the discharge position. As a result, a part of the debris captured and removed from the water, while being removed from the water, is inconveniently returned to the waterway without being discharged outside the system.

Means for Solving the Problems The present invention has been made in view of the above facts, and the purpose is to provide a bar rotating type dust remover with good capture performance. A basket connected to a bar rises in the waterway to capture the waste on the bar rack of the basket, which is then reversed at the upper sprocket and discharged into the trough. The invention is characterized by comprising a drop-prevention rotary plate having a regular polygonal cross section, which rotates synchronously while facing the back surface of the bar rack of the basket with a certain gap, and is coaxially arranged with the upper sprocket shaft. There is a bar rotating screen.

The content of the present invention will be explained below based on the drawings. 1st
The figure is a vertical sectional view of the main part showing an embodiment of the present invention,
FIG. 2 is a front view of the basket taken along line XX in FIG. 1.

In the figure, reference numeral 1 denotes a basket, which includes a bar rack 2 in which flat bars are arranged side by side at a constant pitch, and two saucers 3, 3 that are attached above and below the bar rack 2 at a constant scooping angle θ and have the same length as the width of the bar rack. ′. Reference numeral 4 denotes an endless carrier chain for transporting the basket, which is attached to both the left and right sides of the basket 1, and is connected between a sprocket 6, which is pivoted to both ends of a headshaft 5, which is pivoted across the waterway, and a submerged sprocket, not shown. suspended in the. Reference numeral 7 denotes a fall prevention rotary plate having the same length as the width of the bar rack 2 attached to the headshaft 5 via the arm 8, and the number of plates is 6 in this embodiment, which is the same as the number of teeth of the sprocket 6. Good to have. When the basket 1 is operated and reversed from upward to downward at the top, the fall prevention rotary plate 7 sequentially contacts the inside of the bar rack 2 and rotates synchronously. Reference numeral 9 is a buffer made of an elastic material such as sponge-like rubber that is stretched on the outer surface of the fall prevention rotary plate 7, and has the role of flexibly pressing down on the bar rack from the inside. Reference numeral 10 denotes a garbage trough installed directly below the inverted position of the basket 1.

Function The function of the waterway dust remover with the above configuration will be explained. The basket 1, which moves up in the waterway W by the carrier chain 4 driven by the sprocket 6, captures the garbage A in the water with the bar rack 2, and dehydrates and collects it on the receiving trays 3, 3' having a scooping angle θ. The basket 1 which has risen and reached the top starts to reverse in synchronization with the sprocket 6, but at this time the garbage A on the trays 3, 3' moves on the bar rack 2 in the direction of travel. At this time, some of the dust changes its position and attempts to pass through the slit width S of the bar rack, but the cushioning material 9 stretched on the surface of the fall prevention rotary plate 7 abuts it from the inside, so it is reliably guided to point B, which is the discharge position. The entire amount is discharged into the garbage trough 10 without falling into the waterway on the way. In the embodiments described above, a cushioning material 9 stretched on the surface of a fall prevention rotary plate is brought into contact with the inner surface of the bar rack 2 to prevent the garbage A from falling midway. The same effect can be obtained even if the gap between the inside of the bar rack 2 and the fall prevention rotary plate is made to face each other with a clearance smaller than the slit opening width S.

Effects According to the present invention having the structure and operation described above, the entire amount of garbage trapped in the basket in the waterway is guided onto the trough without falling into the waterway again, and the bar rack is used as a cushioning material. Since it is pushed flexibly through the sprocket, it is possible to obtain unprecedented effects such as being able to operate the carrier chain without removing it from the sprocket.

[Brief explanation of the drawing]

FIG. 1 is a vertical cross-sectional view of a main part showing an embodiment of the present invention, and FIG. 2 is a front view of the basket taken along line XX in FIG. 1. 1...basket, 2...barracks, 3,
3'... saucer, 4... carrier chain, 5...
Head shaft, 6... Sprocket, 7... Fall prevention rotating plate, 8... Arm, 9... Loose waste trough, A... Garbage, W... Waterway, B... Garbage discharge position,
S...Slit opening pitch.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A basket connected to an endless carrier chain moves up in a waterway, catches garbage with the barracks of the basket, and is reversed at the upper sprocket to trough the garbage. In a bar rotating type screen for discharging and discharging, the cross section is arranged coaxially with the upper sprocket axis, and rotates synchronously while facing the back side of the bar rack with a certain gap between the baskets, which are reversed at the upper sprocket part. A bar rotating screen characterized in that it is equipped with a regular polygonal fall prevention rotating plate. (2) The bar rotating screen according to claim 1, wherein the fall prevention rotary plate contacts the back surface of the bar rack via a cushioning material stretched on the outer surface.