JP2779710B2 - Garbage collector - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refuse remover installed in an intake channel for sewage, seawater, lake water, river water, or the like, for capturing and removing relatively large refuse contained in the water. Things.

[0002]

2. Description of the Related Art In this type of conventional dust remover, a bar screen formed in a tubular water channel by a plurality of bars in the shape of a saw or grid is arranged so as to cross the water channel from an orthogonal direction. The bar screen is configured to catch dust contained in running water when the dust is normally used by the bar screen.

[0003]

The conventional refuse remover is constructed as described above, and it is difficult to remove the garbage when the bar screen is clogged, especially when string-like garbage is entangled with the bar. Therefore, the use of the water channel must be stopped and the bar screen must be disassembled, and the cleaning operation requires much time and labor. When the bar screen is clogged with debris, a method of backwashing and automatically removing debris from the bar screen has been conventionally implemented, but a string of debris once entangled with the bar of the bar screen. Even if backwashing, the end of the string-like garbage only changes direction to the downstream side along the backwash water flow in the direction opposite to the flow direction of normal use, and the entangled part to the bar It cannot be separated from the bar, and removal of string-like debris is very difficult. For this purpose, it is conceivable to install a special automatic cleaning device capable of releasing the entanglement in the vicinity of the location of the bar screen. However, in this case, the equipment becomes very expensive and is not practical.

The present invention has been made in view of the above-mentioned circumstances, and even if string-like debris is entangled in a bar of a bar screen, it can be removed without using a special cleaning device.
It is an object of the present invention to provide a refuse remover that can be reliably separated from a bar screen and removed by backwashing.

[0005]

In order to achieve the above object, the present invention provides a refuse remover which traverses a tubular water passage through which backwash water can flow from a direction opposite to a flowing direction in normal use. The whole or at least a part of the arranged bar screen is inclined such that its upper side is upstream in the flowing water direction during normal use, and the inclination angle is set to an acute angle and fixed to the tubular channel. .

[0006]

According to the above configuration, during normal use, dust contained in running water is captured by the bar screen, and when the bar screen is clogged with dust, backwashing is performed so that the backwash water is removed. Eliminate garbage automatically with the flow. Here, all or at least a part of the bar screen has an acute angle of inclination such that the upper side thereof is located on the upstream side in the flowing water direction during normal use, so that dust accumulated in the corner portion of the bar screen is removed. Even if the string-like garbage is entangled with the bar of the bar screen, at the time of backwashing where the backwash water flows from the opposite direction to the running water direction during normal use,
By cooperating with the scraping action of the vortex generated near the corner formed between the bar screen and the inner wall of the channel and the drawing out of the backwashing water flow along the inclined part of the screen, the string-like debris entangled in the bar is removed. The entangled portion can be released, and the dust captured by the bar screen can be eliminated only by the backwash water.

[0007]

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 water channel for taking in sewage or the like, and the tubular water channel 1 can flow backwash water from a direction opposite to a flowing direction in normal use. As shown in FIG. 2, a bar screen 3 in which a plurality of round bar-shaped bars 2 are arranged in the tubular water channel 1 in a dicing pattern.
Is installed. The entire bar screen 3 is fixed to the tubular water channel 1 in a forwardly inclined posture such that an upper side thereof is an upstream side in a flowing water direction during normal use and a lower side thereof is a downstream side during normal use. The angle θ is set to an acute angle.

Next, the operation of the above configuration will be described. During normal use of the water channel 1, dust contained in the running water is captured by the bar screen 3. In particular, the dust M that has hit the bar screen 3 is mainly guided on the upstream side in the flow direction of the screen 3, and is located at the corner 4 between the upstream side and the inner wall of the water channel 1 as shown in FIG. Collect to collect.

[0010] The dust M captured on the bar screen 3
If the bar 2 becomes clogged due to an increase in the amount of waste, backwashing is performed to remove dust M without disassembling the bar screen 3. That is, by flowing backwashing water through the tubular waterway 1 in a direction opposite to the flowing direction during normal use, dust M trapped on the bar screen 3 by the backwashing water flow is eliminated. In particular, at the time of the above-mentioned back washing, the above-mentioned corner 4
As a result, a vortex is generated, and the refuse M collected here is also eliminated at a stretch as it is in the form of a set. It is possible to release the string-shaped debris M from being entangled with the bar 2 and to smoothly separate the debris from the bar screen 3 by cooperating with the flow extracting action along the inclination of the bar. In other words, the bar screen 3 can be cleaned only by backwashing without introducing a special cleaning device.

In the embodiment described above, the entire bar screen 3 is fixed to the tubular channel 1 in a forwardly inclined posture at an acute angle θ. However, the present invention is not limited to this, and as shown in FIG. The form of the vortex generated at the time of backwashing may be changed by using a bar 13 provided with a folded portion 13a having an angle θ1 in the portion. The turning angle θ1 may be set to a value different from the above-described inclination angle θ, and the turning portions 13a may be formed at a plurality of positions on the bar 13.

Further, as shown in FIG. 6, a bar 23 having at least one of upper and lower ends 23a and 23b bent linearly or curvedly is used in place of the bar 2 constituting the bar screen 3 of the above embodiment. May be used. In this case,
Garbage collected in the corners 4 can be more easily separated during backwashing.

FIG. 7 shows a modification of the main part of the present invention, in which the width W becomes narrower toward the downstream in the flowing water direction during normal use.
Bar screen 3 composed of plate-like bar 32 serving as
In this case, the dust contained in the running water during normal use is easily collected in the corners 4, so that the sticking of the dust to the plate screen 32 is reduced accordingly.

[0014]

As described above, according to the present invention, the entirety of the bar screen or the entirety of the bar screen arranged so as to cross the tubular water channel through which the backwash water can flow from the direction opposite to the flow direction during normal use. At least a portion is inclined at an acute angle so that the upper side is upstream in the direction of flowing water during normal use, so that during normal use, dust contained in the flowing water can be captured by the bar screen, of course. If the screen is clogged, it can be removed from the screen by economical means of backwashing alone without disassembling the screen. In particular, even if string-like debris is entangled in the bar of the bar screen, the wiping current generated in the corner formed between the bar screen and the inner wall of the water channel causes the scrubbing action and backwashing along the inclined part of the bar screen. By coordinating with the flow drawing action, i.e., by making a large change in the flowing water direction, the entanglement of the string-like garbage with the bar can be released, and all the garbage captured by the bar screen is backwashed only. This has the effect of being able to be eliminated.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view illustrating an example of a refuse remover according to the present invention.

FIG. 2 is a front view of FIG.

FIG. 3 is an explanatory diagram of the operation of the refuse remover during normal use.

FIG. 4 is an explanatory diagram of the operation of the garbage remover during backwashing.

FIG. 5 is a sectional view showing a modified structure of the screen.

FIG. 6 is a sectional view showing another modified structure of the screen.

FIG. 7 is a sectional view showing still another example of the screen.

[Explanation of symbols]

 1 Waterway 3,33 Bar screen θ Incline angle (acute angle)

Claims (1)

(57) [Claims] 1. From the opposite direction to the direction of running water during normal use
The whole or at least a part of the bar screen arranged so as to cross the tubular water channel through which the backwash water can flow , the upper side of which is the upstream side in the flow direction during normal use.
And set the angle of inclination at an acute angle
Noise Removal instrument characterized by being fixed in waterways.