JPS5925609B2 - water deer removal device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a water dust removal device in which an annular screen cylinder including a number of cage-shaped wire mesh panels each having an involute curved surface is circulated.

The present invention will be described below with reference to the drawings.

As shown in FIG. 1, the water dust removing apparatus 1 of the present invention removes dust from the water to be treated that has passed through a through gate 2 and a bar screen 3 disposed on the upstream side.

The through gate 2 is a water cutoff gate for inspection and repair of the dust removal device 1, and is normally open.

The bar screen 3 is a device in which a large number of rods are erected at an angle in a waterway to capture relatively large debris floating in the water to be treated, and is used to primarily treat the water to be treated.

A rake is connected to the bar screen to remove captured dirt.

The rake detects the difference in water level between the upstream and downstream sides of the bar screen 3, and uses the detection signal to rake up dirt and discharge it out of the waterway.

Next, the dust removal device 1 of the present invention, which is disposed downstream of the bar screen 3, consists of an endless annular chain 5 whose lower part is suspended in the water to be treated by being suspended around a pair of front and rear sprockets 4 attached to a drive shaft. A cage-shaped wire mesh panel 7 is connected and installed between each of the opposing link plates 6 and 6 of the pair of chains 5 to form an annular screen body 8.

In this embodiment, the outer peripheral curved surface of the cage-shaped wire mesh panel 7 is an involute curved surface relative to the pinch circle of the sprocket 4.

Therefore, if the backwash nozzle 9 that opens on the radial line of the curved surface is arranged above the sprocket 4, the jet water 10 jetted from the backwash nozzle 9 will always hit the involute curved surface perpendicularly. .

Furthermore, if the opening position of the backwash nozzle 9 is arranged other than on the radial line, the angle of incidence of the jet water 10 hitting the curved surface of the wire mesh will always be constant. By always keeping the angle of fire, you can completely clean the dust adhering to the wire mesh.

A gutter 11 for collecting dust is installed between the Suge rockets 4 and 4 that can face each other.
is horizontally suspended slightly on the upstream side, and the tip of the gutter 11 communicates with a garbage storage device outside the device 1.

Above the annular screen cylinder 8, two backwashing pipes 12 are provided at appropriate positions parallel to the screen cylinder 8, respectively.
A large number of backwash nozzles 9 are arranged so as to face approximately perpendicular to the outer peripheral surface of the screen cylinder.

Note that the number of backwashing pipes 12 may be increased as necessary to more thoroughly wash the wire mesh.

Note that a guide roller (not shown) is attached to the outer surface of the link plate 6 of the pair of front and rear chains 5, and is guided by a guide rail (not shown) that has a U-shaped cross section, so that the annular screen body 8 can be swung in any direction. It is prevented from moving.

Also, one end of the annular screen cylinder 8 is connected to an emergency discharge gate 1.
3 is always closed, and the other end is open to the inflow port 14 of the water to be treated.

Next, the operation of this device will be explained.

The water to be treated that flows from the inlet 14 of the device 1 through the bar screen 3 enters the annular screen body 8 and is divided laterally in FIG. 1 from the inside of the cage-shaped wire mesh panel 7 located below. It flows out to the outside, and during that time, the cage-shaped wire mesh panel 7 captures the dust and becomes treated water.

The annular screen cylinder 8 has a moving speed of 3 to 4 m/rfu! The cage-shaped wire mesh panels 7 that have captured the dust as described above are successively lifted above the water surface and rotated around the sprocket 4, while the water jetted from the backwash nozzle 9 is circulated through the wire mesh. is washed, and the dust in the basket-shaped wire mesh is poured into the gutter 11 together with the jetted water.

The dust collected in the gutter 11 is carried out of the apparatus together with supplementary water into the gutter and collected in a dust storage device (not shown), and only moisture flows out into the water channel.

In addition, in addition to providing a cathode to the mechanical part of this device for corrosion prevention,
A cathodic corrosion protection device with an anode plate inserted into the water to be treated is installed.

The present invention has the above-mentioned configuration, and since each cage-shaped wire mesh panel projects outward, the present invention has the effect of reliably trapping dust within the cage and collecting it in the dust collection gutter.

At the same time, since the shape of the cage-shaped wire mesh panel is an involute curved surface, the surface area of the wire mesh is smaller than that of a conventional flat wire mesh panel, the seat area is larger, and the water volume is 170% less than that of the flat wire mesh. Along with getting.

The jet water ejected from the backwashing nozzle placed above the rotating part of the annular screen body always hits the curved surface of the wire mesh at a constant angle of incidence, so by arranging the backwashing nozzle at a predetermined position, exceptional cleaning can be achieved. It has an extremely excellent effect that can be easily exerted.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 shows an apparatus 1 of the present invention.
It is an explanatory diagram of a dust removal system having. FIG. 2 is an elevational view of the present device, FIG. 3 is a sectional side view of the same, and FIG. 4 is an enlarged view of the top of FIG. 2. 1...Water dust removal device, 2...Through gate, 3...Bar screen, 4...Sprocket, 5...Endless ring chain , 6...
... Link plate, 7 ... - Cage-shaped wire mesh panel, 8 ... - Annular screen body, 9 ...
・Backwash nozzle, 10------jet water, 11------
・Dust collection gutter, 12... Backwash piping, 13-...
-・Emergency discharge gate, 14-...Inlet, M・
·····motor.

Claims (1)

[Claims] 1. A plurality of cage-shaped wire mesh panels each formed by two involute curved surfaces protruding outward are arranged in series to form an annular screen cylinder that circulates in the vertical direction, and one side end of the screen cylinder is closed, The other end of the screen cylinder is disposed on the inflow side of the water to be treated, and a cleaning nozzle that opens toward the wire mesh panel is disposed above the rotating part of the annular screen cylinder, and an upper part of the inside of the annular screen cylinder is disposed. A water dust removal device equipped with a dust collection gutter.