JPH04281909A - Refuse remover - Google Patents

Abstract

PURPOSE:To securely remove refuse with back washing, by attaching a bar screen arranged so as to traverse a water way to the side face of the upperstream on usually using and by fitting a movable screen bar at the front edge thereof to be freely movable on reversely back-washing. CONSTITUTION:A bar screen 3 in which a plurality of bars 2 are arranged at the inner wall of a water way 1 is installed to traverse the water way 1. Next, the rigid part 4a is fitted at the front edge and a plurality of movable screen bars 4 formed with flexibility at the base end side 4b are fitted at the scattered spots on the bar screen 3. When refuse is clogged in the bar screen 3, the movable screen 4 is opened around the base end 4b as a fulcrum from the upperstream side of the bar screen 3 by the stream of backwashing water to make large the opening of the screen 3. In this way, refuse can be automatically removed without necessity of disassembling the bar screen 3.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] The present invention relates to a garbage remover installed in a waterway for intake of sewage, seawater, lake water, river water, etc., to remove relatively large garbage contained in the flowing water. be.

0002

BACKGROUND OF THE INVENTION In a conventional garbage remover of this type, a bar screen in the form of a grate or grid made up of a plurality of bars is arranged in a tubular waterway so as to cross the waterway in a perpendicular direction. The bar screen is configured to trap dirt contained in flowing water during normal use.

0003

[Problems to be Solved by the Invention] Conventional trash removers are constructed as described above, and when the bar screen becomes clogged with trash, the use of the water channel must be stopped and the screen must be disassembled. Cleaning work takes a lot of time and manpower. Furthermore, when the bar screen becomes clogged with debris, a method has been implemented in which backwashing is performed to automatically remove the debris from the screen.
Even with this backwashing, it is difficult to remove string-like debris entangled in the bar screen. Therefore, it is conceivable to install a special automatic cleaning device near the bar screen to remove the string-like debris, but in this case, the entire equipment would be expensive.

The present invention has been made in view of the above-mentioned circumstances, and an object of the present invention is to provide a dust remover that can reliably remove dust entangled with the screen by backwashing, and also facilitates cost reduction.

[0005]

[Means for Solving the Problems] In order to achieve the above object, the garbage remover according to the present invention has a grid-like or net-like bar screen arranged to cross a waterway, in which the flow of the used water during normal use. A plurality of movable screen bars are attached to the screen so as to be in contact with the upstream side surface of the screen, and to be freely movable so that, during backwashing, the tips of the bars are opened to the downstream side in the flow direction of the backwash water.

[0006]

[Operation] According to the above structure, during normal use, the movable screen bar comes into contact with the screen due to the flow of used water, so that the opening of the bar screen becomes smaller and the dust contained in the normally used water is captured as specified. be able to. When this bar screen becomes clogged with debris, backwashing is performed, but at this time, the movable screen bar moves so that its tip separates from the bar screen due to the flow of backwashing water, so the bar screen is completely cleaned. The aperture becomes larger. As a result, the garbage can be automatically discharged without disassembling the bar screen, and since the movable screen bar is oriented downstream in the backwash direction, string-like garbage tangled in the movable screen bar etc. can also be removed. It easily falls off and is expelled.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a sectional view showing a dust remover according to an embodiment of the present invention. In the figure, reference numeral 1 denotes a tubular waterway for taking in sewage, etc., and on the inner wall of this waterway 1, a bar screen 3 consisting of a plurality of bars 2 arranged in a grid pattern is installed on the inner wall of the waterway 1. It is set up to cross the. Reference numeral 4 designates a plurality of movable screen bars which are scattered and attached to the bar screen 3 and are made of strings made of synthetic resin, for example. This string 4 has a rigid portion 4a on the distal end side, and its proximal end side 4b is formed thin in order to have flexibility, and this proximal end side 4b
It is pivotally connected to the upstream side surface of the bar screen 3 via the bar screen 3 so as to be freely movable. This allows the screen 4
In normal use, the flow of water contacts the upstream side of the bar screen 3, and during backwashing, the flow of backwashing water directs its tip from the bar screen 3 side toward the downstream side in the backwashing direction. It is designed to open up. Further, the length L of each string 4 is set to be longer than the diagonal length l of the opening of the bar screen 3.

Next, the operation of the above configuration will be explained. During normal use of the waterway 1, the bar screen 3 disposed across the waterway 1 traps dirt contained in the water used. Moreover, at this time, the flow of normally used water causes the plurality of strings 4 to come into contact with the upstream side of the bar screen 3 as shown by the solid line in FIG. Therefore, even small particles are effectively captured.

If the bar screen 3 is clogged with dirt, backwashing is performed to remove the dirt. That is, during backwashing, the string 4 uses its base end 4b as a fulcrum and is separated from the upstream side of the bar screen 3 by the flow of backwash water as shown by the chain line in FIG. growing. Therefore, the dirt is automatically discharged without disassembling the bar screen 3 due to the flow of backwash water and the enlarged opening.

In particular, during backwashing, the string 4 has its tip end 4a separated and extends downstream in the flow direction of the backwash water, so that string-like debris etc. entangled in the string 4 can be easily removed. It will fall out. As a result, there is no need to introduce a dedicated cleaning device, and a low-cost cleaning operation is achieved.

[0012] Since the strings 4 are made rigid at each end 4a, entanglement between the strings 4 or between the strings 4 and the bar screen 3 is effectively prevented.

By the way, in the above embodiment, the string 4 whose base end 4b is flexible is used as the movable screen bar.
However, the present invention is not limited to this, and for example, as shown in FIG. However, the same effect can be obtained.

[0014]

As described above, according to the present invention, the bar screen arranged to cross the waterway has a movable structure that comes into contact with the bar screen during normal use and whose tip separates from the bar screen during backwashing. Since the screen bar is freely movable, it is possible to remove the debris trapped in the bar screen without having to disassemble the bar screen. without depending on cleaning equipment.
It can be automatically eliminated by moving the movable screen bar.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing an example of a dust remover according to the present invention.

FIG. 2 is a front view showing a bar screen in the dust remover.

FIG. 3 is an enlarged explanatory diagram of a string that is an example of a movable screen bar.

FIG. 4 is a side view showing another example of the movable screen bar.

[Explanation of symbols]

1 Waterway 3 Bar screen 4,41 Movable screen bar

Claims (1)

[Claims] Claim 1: A grid-like or mesh-like screen arranged to cross a waterway, during normal use, the flow of used water contacts the upstream side of the screen, and during backwashing, the tip of the screen contacts the backwashing water. A dust remover characterized by being equipped with a plurality of movable screen bars that can be freely moved so as to open and separate in a position facing downstream in the flow direction.