JPS6359329A - Water scrubber - Google Patents

Abstract

PURPOSE:To trap dust even if the concn of dust contained in circulating water is high by providing a baffle plate which consists of a perforated plate and has a chevron-shaped cross-sectional form to the inside of a treatment tower and pouring water onto the baffle plate member from an overflow gutter. CONSTITUTION:Water sprinkled in a treatment tower 2 is introduced into a screen treating tank 4 through a drainage pipe 3 from the tower bottom and dust contained in water is roughly removed and thereafter it is stored in a water tank 1. Dust-laden air is blown from an air intake port 7 provided to the lower side part of the treatment tower 2 with a blower or the like and blown upward through the inside of the tower, dehumidified by a mist separator 8 and discharged to the atmosphere. Perforated baffle plate members 9, 10, 11 having a chevron-shaped cross-sectional form are provided in a double-level step up and down in the tower. Overflow gutters 12 are provided on the baffle plate members 9, 10 of the upper step respectively so as to allow water drawn up from the water tank 1 with a circulating pump 13 to overflow. Therefore water becomes a sprinkled state and the contacting efficiency of gas and liquid can be enhanced.

Description

[Detailed Description of the Invention] <Industrial Application Field> This invention receives dust-containing air into the lower part of the inside of the treatment tower and blows it upward, and also sprinkles water into the tower from above, and this water spraying removes dust from the air. This invention relates to water scrubbers for use in grain processing equipment such as country elevators and rice centers, which separates dust contained in water scrubbers.

<Prior Art> In conventional water scrubbers, water is sprinkled within the treatment tower using a nozzle.

(Problem to be solved by the invention) Since the water used for this watering is used by collecting dust in the treatment tower and circulating it with a pump, the water is mixed with the collected dust, and the water is mixed with dust. When the concentration of dust increases, the water spray nozzle becomes clogged, reducing the water spraying efficiency and thus the dust collection efficiency.

<Means for Solving the Problems> Therefore, the present invention constructs a baffle plate member with a rectangular cross section made of a porous plate in the treatment tower, and also installs an overflow gutter that pours water onto the baffle plate member from above. It is characterized by having been provided.

<Function> The water overflowing from the overflow gutter flows onto the baffle plate member below which is a perforated plate bent into a rectangular shape, flows down the perforated holes of the member twice, and is sprayed below.

<Example> In the illustrated example, 1 is a water tank, 2 is a treatment tower installed above the water tank, and the water sprinkled in the treatment tower is drained from the bottom of the tower through a drain pipe 3 into a screen treatment tank 4. After roughly removing the dust contained in the water, store it in a water tank. In addition, the dust separated in the screen treatment tank 4 is transferred to a dust collection box 6 by a belt conveyor 5.
Throw it away.

The dust-containing air is blown into the air intake lower of the lower side of the treatment tower 2 by a blower or the like, blows upward through the tower, is dehumidified by the mist separator 8, and is released into the atmosphere.

In this embodiment, three baffle plate members are installed vertically inside the tower.

The lower two baffle plate members 9 and 10 are made of perforated plates and have a wedge-shaped cross section, and are located on opposing wall surfaces a in the tower.

They are built vertically along the a line in different levels, and the dust-containing air winds through them.

The uppermost baffle plate member 11 has a hollow rhombus cross section made by joining two pieces with a rectangular cross section back to back. It is installed between orthogonal wall surfaces S and B.

Overflow gutters 12 are constructed above the upper two baffle plate members 9 and 11, respectively, to receive water pumped up by the circulation pump 13 from the water tank l and allow it to overflow.

Of course, an overflow gutter 12 may also be constructed on top of the baffle plate member 10 at the lowest tier to allow water to flow, but water sprayed by the baffle plate members 9 and 11 will be applied to this baffle plate member IO. Therefore, it is omitted.

Each baffle plate member 9, 10, 11 may be formed by bending a single sheet of punched metal, or may be formed by joining a plurality of sheets of punched metal by welding or the like.

In addition, the holes are arranged in a staggered manner, the diameter of the holes is about 10 to 20 mm, and the interval between the holes in one row and the interval between the rows is 5 to 50 mI.
It is the rank.

As a result, the water overflowing from the overflow gutter 12 is transferred to the baffle plate member 11.
, 9 falls onto the upper sloped plate, passes through the hole in the sloped plate, falls onto the top surface of the lower sloped plate, and falls again through the hole in the sloped plate, creating a state of water spraying, causing water to flow upward inside the treatment tower. Captures dust in the dust-containing air that blows through.

In this embodiment, the water sprayed from both baffle plate members 11.9 falls on the baffle plate member 10, which also falls through the holes in the upper and lower inclined plates, becoming a water spray state and trapping dust again. .

In this embodiment, the baffle plate members are installed in three stages, but they may be installed in more stages.

When constructing the tower, if the tower is arranged so that the air blowing upward meanders as in this embodiment, the air flow will be smooth and pressure loss will be small, while the gas-liquid contact efficiency will be increased.

<Effects of the Invention> In the present invention, water is poured from an overflow gutter onto a baffle plate member with a rectangular cross section made of a porous plate, and the baffle plate member makes the water sprinkled, thereby reducing the concentration of dust in the circulating water. Even if it is expensive, water can be sprinkled inside the treatment tower like rain to collect dust in the dust-containing air.

[Brief explanation of drawings]

FIG. 1 is a sectional view of an embodiment of the present invention; FIG. 2 is an enlarged sectional view of a part of FIG. Showing overflow gutter.

Claims (1)

[Claims] A water treatment system that receives dust-containing air into the inside of a treatment tower and blows it upward, and also sprinkles water into the tower from above to separate dust contained in the air from the air. In the scrubber: A water scrubber characterized in that a baffle plate member having a cross-sectional shape made of a porous plate is installed in the treatment tower, and an overflow gutter is provided for pouring water into the baffle plate member from above. .