JP3319631B2 - Water spray type air purification device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water spray type air purifying apparatus for removing dust from air containing dust by spraying water on the air.

[0002]

2. Description of the Related Art Conventionally, as an air purifying apparatus for removing dust contained in air, a water spray type air purifying apparatus of the type which removes dust from air by spraying water on dust-containing air is known. ing.

FIGS. 3 and 4 show a water spray type air purifying apparatus of this type. In the figures, reference numeral 11 denotes air supplied from a duct 13 and containing harmful gas such as sulfur dioxide or dust. Shows a water spray chamber through which water flows from the upstream side to the downstream side.

In the water spray chamber 11, a water spray device 15 is provided.
Is arranged. The water spraying device 15 has a main pipe 17 that is disposed horizontally, and a branch pipe 19 is vertically branched from the main pipe 17 at a predetermined interval.

[0005] The lower end of the branch pipe 19 is closed, and a plurality of nozzles 21 for spraying water on air containing dust are arranged at predetermined intervals in the vertical direction. .

Downstream of the water spray chamber 11 is a water spray chamber 11
Remove the water contained in the air that has passed through, for example,
A water separator 23 composed of an eliminator is arranged.
A water storage tank 25 is arranged below the water spray chamber 11.

One end of a circulation pipe 27 is opened in the water storage tank 25, and the other end of the circulation pipe 27 is connected to the main pipe 17.
It is connected to the. A pump 29 for circulating water in the water storage tank 25 and a filter 31 for removing relatively large dust from the circulating water are arranged in the circulation pipe 27.

In the water spray chamber 11, a water supply pipe 33 for supplying water from outside is disposed in the water storage tank 25. In the water spray type air purification device described above,
The air containing dust that has flowed into the water spray chamber 11 from the duct 13 passes from the upstream side to the downstream side of the water spray chamber 11, during which water adheres to the dust due to the spray water sprayed from the nozzle 21. Alternatively, the dust is absorbed by the water droplets, whereby the dust naturally falls downward, the dust is removed from the air, and the air from which the dust has been removed is supplied to the water separator 23.
And the moisture in the air is removed.

On the other hand, the water in the water storage tank 25 is
, And after relatively large dust is removed by the filter 31, the dust is guided from the main pipe 17 to the branch pipe 19,
Nine nozzles 21 spray into the water spray chamber 11 and circulate through the water storage tank 25.

In the water storage tank 25, the water supply pipe 3
Water from 3 is constantly being replenished.

[0011]

However, in such a conventional water spray type air purifying apparatus, since the clean water as the make-up water is simply supplied from the clean water supply pipe 33 into the water storage tank 25, There was a problem that water was not used effectively.

On the other hand, in the above-described water spray type air purification device, there are a large number of dust particles that do not fall naturally despite the adhesion of water, or a large number of water droplets that do not fall even if a large amount of fine dust particles are absorbed. Since such dust flows into the water separator 23 as it is by the flow of air, there is a problem that the dust adheres to the inside of the water separator 23 and the separation efficiency of the water separator 23 is reduced.

The present invention has solved the above-mentioned problems, and it is possible to significantly reduce the adhesion of dust in a water separator while utilizing makeup water in a water storage tank. An object of the present invention is to provide a spray-type air purification device.

[0014]

SUMMARY OF THE INVENTION A water spray air purifying apparatus according to the present invention comprises a water spray chamber through which air containing dust passes horizontally from an upstream side to a downstream side; a water spray device having a plurality of nozzles for spraying water from disposed laterally of the flow of air containing the dust, the
From the nozzle arranged parallel and perpendicular to the flow of air
A wall portion against which the sprayed water collides, a water separator disposed downstream of the water spray chamber to remove moisture contained in air passing through the water spray chamber, and a water separator disposed below the water spray chamber A water spray type air purification device comprising a water storage tank and a circulation pipe for circulating water in the water storage tank to the water spray device, wherein the water supplied from outside is supplied to the inlet side of the water separator. A water spray device for spraying water is arranged, and water jetted from the water spray device is guided to the water storage tank as makeup water.

[0015]

According to the water spray type air purification device of the present invention, dust-containing air
Air flows horizontally from upstream to downstream.
Water is sprayed from the side of the dusty air stream.
You. And the spray water that absorbed the dust in the air
Sprays impinge on walls arranged parallel and perpendicular to the flow
The water film formed on the surface of the wall by water traps the water film.
Fall along the wall with the fall of
Dust is removed. In addition, the clean water sprayed from the clean water spray device is supplied into the water storage tank as make-up water, while the clean water sprayed from the clean water spray device is supplied to the air inflow side of the water separator. And a part of the clean water flows into the water separator together with the air, and the clean water flows into the water separator.

[0016]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an embodiment of the present invention; FIGS. 1 and 2 show an embodiment of the water spray type air purification apparatus of the present invention. In these figures, reference numeral 41 denotes a harmful gas such as sulfur dioxide supplied from a duct 43. 2 shows a water spray chamber through which air A containing dust and dust passes from the upstream side to the downstream side.

In the water spray chamber 41, a water spray device 45 is provided.
Is arranged. The water spray device 45 includes main pipes 47a and 47b that are horizontally arranged.
A branch pipe 49 is vertically branched at a predetermined interval from 47b.

The lower end of the branch pipe 49 is closed, and a plurality of nozzles 51 for spraying water on dust-containing air are arranged at predetermined intervals in the vertical direction. .

Downstream of the water spray chamber 41, the water spray chamber 41
Remove the water contained in the air that has passed through, for example,
A water separator 53 composed of an eliminator is provided.
A water storage tank 55 is arranged below the water spray chamber 41.

One end of a circulation pipe 57 is opened in the water storage tank 55, and the other end of the circulation pipe 57 is connected to a main pipe 47.
a, 47b. The circulation pipe 57 includes a pump 59 for circulating water in the water storage tank 55 and a filter 61 for removing relatively large dust from the circulating water.
Is arranged.

In the center of the water spray chamber 41, a partition plate 63 is disposed substantially vertically along a flow direction of dust-containing air. Further, on both sides of the partition plate 63 and inside the wall surface 41a of the water spray chamber 41, a main pipe 47 is provided.
b, 47a are arranged, and the respective main pipes 47a, 47
A branch pipe 49 is branched to b.

The direction of water spray from the nozzle 51 of the branch pipe 49 disposed on the side of the wall surface 41a is set so that the spray water W is directed toward the partition plate 63, and the water spray pressure from the nozzle 51 is The pressure is set so that the water W surely collides with the partition plate 63.

On the other hand, the branch pipe 4 arranged on the partition plate 63 side
The direction of water spray from the nozzle 51 of 7b is set to the direction in which the spray water W is directed toward the wall surface 41a, and the water spray pressure from the nozzle 51 is set to a pressure at which the spray water W reliably collides with the wall surface 41a. .

In this embodiment, however, the water separator 53
A water spray device 65 for spraying the water supplied from the outside is disposed on the air inflow side in the above. The water spray device 65 has a supply pipe 67 for supplying clean water such as distilled water or tap water from the outside at a predetermined pressure.

The supply pipe 67 is disposed horizontally above the water inflow side of the water separator 53. The supply pipe 67 is provided with a plurality of water supply branch pipes 69 at predetermined intervals in the horizontal direction.
Are branched in the vertical direction.

In the water branch pipe 69, a plurality of water spray nozzles 71 are arranged at predetermined intervals in the vertical direction.
The diameter of the nozzle hole of the water spray nozzle 71 is
9 has a smaller diameter than the diameter of the nozzle hole of the nozzle 51, and relatively fine spray water is sprayed.

In the above-described water spray type air purifying apparatus, the air A containing dust flowing into the water spray chamber 41 from the duct 43 passes from the upstream side to the downstream side of the water spray chamber 41, and during this time, Dust in the air that has collided with the spray water W sprayed from the nozzle 51 collides with the partition plate 63 or the wall surface 41a together with the spray water W, and a water film formed on the surface of the partition plate 63 or the wall surface 41a by the spray water W And fall along the partition plate 63 or the wall surface 41a with the fall of the water film, and most of the dust is removed from the air.

The air from which most of the dust has been removed is further removed by the clean water sprayed from the clean water spray device 65 on the inflow side of the water in the water separator 53, and a part of the mixed air is removed. Water separator 53
And water in the air is removed in the water separator 53.

On the other hand, the water in the water storage tank 55 is
, And after a relatively large dust is removed by the filter 61, the dust is guided from the main pipes 47 a and 47 b to the branch pipe 49, sprayed from the nozzle 51 of the branch pipe 49 into the water spray chamber 41, and circulated to the water storage tank 55. Is done.

Then, the clean water sprayed from the clean water spray device 65 falls on the surface of the water storage tank 55 as it is, and is supplied into the water storage tank 55 as makeup water. Thus, in the water spray type air purification device configured as described above, the clean water sprayed from the clean water spray device 65 uses the clean water tank 55 as makeup water.
On the other hand, on the inflow side of the air in the water separator 53, the clean water sprayed from the clean water spray device 65 is
Mix in the air, and a part of the clean water is
3, the inside of the water separator 53 is washed by the inflowing clean water, so that the adhesion of dust to the inside of the water separator 53 while using the make-up water into the water storage tank 55 is greatly improved as compared with the conventional case. It becomes possible to reduce to.

Further, in the above-described water spray type air purifying apparatus, since the supply water is supplied to the supply pipe 67, even if the diameter of the nozzle hole of the water spray nozzle 71 is relatively small, the nozzle hole is not dusty. The nozzle hole of the water spray nozzle 71 can be made smaller in diameter than the nozzle hole of the nozzle 51 arranged in the branch pipe 49 because the water spray nozzle 71 is not clogged. Makes it possible to spray relatively fine spray water, thereby improving the dust removal efficiency.

Further, in the water spray type air purifying apparatus described above, the spray water W from the nozzle 51 is sprayed from the side of the flow of the dust-containing air in the water spray chamber 41, and the spray water W Dust in the colliding air collides with the partition plate 63 together with the spray water W, is captured by the water film formed on the surface of the partition plate 63 by the spray water W, and falls along the partition plate 63 as the water film falls. As a result, the dust removal efficiency in the water spray chamber 41 can be significantly improved as compared with the related art.

[0033]

As described above, in the water spray type air purification device of the present invention, the clean water sprayed from the clean water spray device is:
Water is supplied into the water storage tank as make-up water.On the other hand, on the inflow side of the air in the water separator, the clean water sprayed from the clean water spray device mixes with the air, and some clean water is separated with the air. Since the water flows into the vessel and the inside of the water separator is washed by the inflowing water, the adhesion of dust to the water separator while using makeup water in the water storage tank is significantly reduced compared to the conventional case. be able to.

Further, since the tap water is supplied to the tap water spray device, it is possible to easily spray relatively fine spray water, and there is an advantage that the dust removal efficiency can be improved. .

[Brief description of the drawings]

FIG. 1 is a cross-sectional view taken along the line II of FIG. 2, showing one embodiment of a water spray type air purification device of the present invention.

FIG. 2 is a sectional view taken along line II-II in FIG.

FIG. 3 shows a conventional water-spray type air purification device, and FIG.
FIG. 3 is a sectional view taken along line III-III of FIG.

FIG. 4 is a sectional view taken along the line IV-IV in FIG. 3;

[Explanation of symbols]

 41 water spray chamber 45 water spray device 51 nozzle 53 water separator 55 water storage tank 57 circulation piping 65 water spray device W spray water

Claims (1)

(57) [Claims] 1. A water spray chamber through which dust-containing air passes from an upstream side to a downstream side in a horizontal direction, and a flow of the dust-containing air disposed in the water spray chamber.
A water spray device having a plurality of nozzles for spraying water from the side of the nozzle, and the nozzles arranged in parallel and perpendicular to the air flow
A wall portion against which water sprayed from the water spray chamber is disposed, a water separator disposed downstream of the water spray chamber to remove moisture contained in air that has passed through the water spray chamber, and a water separator below the water spray chamber. A water storage tank to be disposed, and a circulation pipe for circulating water in the water storage tank to the water spray device.A water spray type air purification device, comprising: an externally supplied water inlet side of the water separator; A water spray device for spraying clean water, wherein the water sprayed from the water spray device is guided to the water storage tank as makeup water.