JP3745779B2 - Water spray type air purifier - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a water spray type air purifier that removes dust from air by spraying water onto air containing dust.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, a water spray type air purification device that removes dust from air by spraying water onto air containing dust is known as an air purification device that removes dust contained in the air.
[0003]
FIGS. 5 and 6 show this type of water spray type air purification device, in which the reference numeral 11 denotes an upstream side where air containing harmful gas such as sulfur dioxide and dust supplied from the duct 13 is upstream. The water spray chamber which passes toward the downstream from is shown.
[0004]
A water spraying device 15 is disposed in the water spraying chamber 11.
The water spraying device 15 has a main pipe 17 arranged horizontally, and a branch pipe 19 is branched in the vertical direction 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 dust-containing air are arranged on the branch pipe 19 at predetermined intervals in the vertical direction.
[0006]
A water separator 23 made of, for example, an eliminator is disposed on the downstream side of the water spray chamber 11 to remove moisture contained in the air that has passed through the water spray chamber 11.
A water storage tank 25 is disposed below the water spray chamber 11.
[0007]
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.
A circulation pipe 27 is provided with a pump 29 for circulating the water in the water storage tank 25 and a filter 31 for removing relatively large dust from the circulating water.
[0008]
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 and is sprayed from the nozzle 21 during this time. The sprayed water causes water to adhere to the dust, so that the dust naturally falls downward, the dust is removed from the air, and the air from which the dust has been removed flows into the water separator 23 and enters the air The moisture is removed.
[0009]
On the other hand, the water in the water storage tank 25 passes through the circulation pipe 27, and after relatively large dust is removed by the filter 31, the water is guided from the main pipe 17 to the branch pipe 19 and from the nozzle 21 of the branch pipe 19 to the water spray chamber. 11 is sprayed into the water tank 25 and circulated in the water tank 25.
[0010]
[Problems to be solved by the invention]
However, in such a conventional water spray type air purification device, there is a problem that it is difficult to spray sufficiently fine spray water from the nozzle 21 and sufficient removal efficiency for dust cannot be obtained.
[0011]
That is, in the water spray type air purification device described above, the water in the water storage tank 25 is circulated and sprayed from the nozzle 21, so the circulating water contains dust that has not been removed by the filter 31, If the diameter of the nozzle hole of the nozzle 21 is reduced to make the spray water finer, the nozzle hole is clogged, so that a nozzle having a small diameter nozzle hole cannot be used. There was a problem that it was difficult to spray fine spray water.
[0012]
Moreover, in order to spray fine spray water, a large pressure and a large number of nozzles are required, and a lot of power is required.
The present invention solves the above-described problems, and an object of the present invention is to provide a water spray type air purification device that can make spray water fine without reducing the nozzle hole of the nozzle.
[0013]
[Means for Solving the Problems]
The water spray type air purification device of the present invention includes a water spray chamber through which dust-containing air is passed in the horizontal direction from the upstream side to the downstream side, and the air containing the dust disposed in the water spray chamber. A water spray device having a plurality of nozzles for spraying water from the side of the flow; a water separator disposed downstream of the water spray chamber to remove moisture contained in the air that has passed through the water spray chamber; In a water spray type air purification apparatus comprising a water storage tank disposed below the water spray chamber, and a circulation pipe for circulating water in the water storage tank to the water spray apparatus, the direction of water ejection from the nozzle Further, a net member for subdividing the granular jet water jetted from the nozzle is arranged.
[0014]
[Action]
In the water spray type air purifying apparatus of the present invention, the water jetted from the nozzle in the water spray chamber collides with the mesh member and is subdivided into fine spray water.
[0015]
【Example】
Hereinafter, the details of the present invention will be described with reference to the embodiments shown in the drawings.
FIG. 1 and FIG. 2 show an example of a water spray device that is a related technique of the present invention. In these drawings, reference numeral 33 denotes a pipe through which water is supplied at a predetermined pressure.
[0016]
A nozzle 35 is disposed in the pipe 33, and a number of nozzle holes 37 for ejecting water are formed in the nozzle 35.
A mesh member 39 made of a wire mesh, a resin mesh, or the like is disposed in front of the nozzle hole 37 at a predetermined interval from the nozzle 35.
[0017]
In this example, the outer diameter of the jetting water W ₁ when the jetting water W ₁ that is ejected from the nozzle hole 37 reaches the mesh member 39 is a longitudinal 1 mm, whereas, the wire diameter of the mesh of the mesh member 39 0.5 to 1 mm, and the mesh is a square of 8 to 5 mesh.
[0018]
In the above-described water spray apparatus, jetting water W ₁ that is ejected from the nozzle 35 and collides with the mesh member 39, jetting water W ₁ is subdivided fine spray water W ₂ by velocity energy of the jet water W ₁ Therefore, it is possible to easily make the spray water W ₂ fine without reducing the nozzle hole 37 of the nozzle 37.
[0019]
3 and 4 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. FIG. 1 shows a water spray chamber through which air A containing dust and dust passes from the upstream side toward the downstream side.
[0020]
A water spray device 45 is disposed in the water spray chamber 41.
The water spraying device 45 has main pipes 47a and 47b arranged horizontally, and a branch pipe 49 is branched into the main pipes 47a and 47b at a predetermined interval.
[0021]
The lower end of the branch pipe 49 is closed, and a plurality of nozzles 51 for spraying water on air containing dust are arranged in the branch pipe 49 at predetermined intervals in the vertical direction.
[0022]
On the downstream side of the water spray chamber 41, a water separator 53 made of, for example, an eliminator that removes moisture contained in the air that has passed through the water spray chamber 41 is disposed.
A water storage tank 55 is disposed below the water spray chamber 41.
[0023]
One end of the circulation pipe 57 is opened in the water storage tank 55, and the other end of the circulation pipe 57 is connected to the main pipes 47a and 47b.
The circulation pipe 57 is provided with a pump 59 for circulating the water in the water storage tank 55 and a filter 61 for removing relatively large dust from the circulating water.
[0024]
Thus, in this embodiment, a partition plate 63 is arranged in the center of the water spray chamber 41 along the flow direction of the air containing dust and almost vertically.
Further, main pipes 47b and 47a are arranged on both sides of the partition plate 63 and inside the wall surface 41a of the water spray chamber 41, and a branch pipe 49 is branched into each of the main pipes 47a and 47b.
[0025]
Further, a net member 65 made of a metal net, a resin net, or the like is disposed between the partition plate 63 and the wall surface 41a in the water spray chamber 41.
In this embodiment, the average outer diameter of the jetting water W ₁ when the jetting water W ₁ that is ejected from the nozzle 51 reaches the mesh member 65 is a longitudinal 1 mm, whereas, net of mesh member 65 diameter Is 0.6 to 0.9 mm, and the mesh standard is 7 to 5 mesh.
[0026]
Then, the direction of water spray from the nozzle 51 of the branch pipe 49 arranged on the wall surface 41a side is set to a direction in which the jet water W ₁ is directed toward the partition plate 63, and the water jet pressure from the nozzle 51 is the jet water W 1. _{After 1} passes through the net member 65, the pressure is such that it reliably collides with the partition plate 63.
[0027]
That is, the fine spray water generated by colliding with the net member 65 is drawn by a large number of high-speed water droplets that have passed through the net without colliding with the net member 65, and proceeds in the ejection direction. The pressure is a collision.
[0028]
On the other hand, the direction of water spray from the nozzle 51 of the branch pipe 47b arranged on the partition plate 63 side is set to a direction in which the jet water W ₁ is directed toward the wall surface 41a, and the water jet pressure from the nozzle 51 is changed to the jet water W. _{After 1} has passed through the net member 65, the pressure is such that it reliably collides with the wall surface 41a.
[0029]
In the water spray type air purification device described above, 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, the nozzle 51 dust in the air colliding with the spray water W ₂ which is subdivided by jetting water W ₁ and mesh member 65 is sprayed from the can along with water spray W ₂ collides with the partition plate 63 or the wall 41a, by spraying water W ₂ The water film formed on the surface of the partition plate 63 or the wall surface 41a is captured and falls along the partition plate 63 or the wall surface 41a together with the fall of the water film, dust is removed from the air, and the air from which the dust has been removed is Then, it flows into the water separator 53, and moisture in the air is removed.
[0030]
On the other hand, the water in the water storage tank 55 passes through the circulation pipe 57, and after removing relatively large dust by the filter 61, the water is guided to the branch pipe 49 from the main pipes 47 a and 47 b, and is then supplied from the nozzle 51 of the branch pipe 49 The water is sprayed into the spray chamber 41 and circulated in the water storage tank 55.
[0031]
Thus, in the water spray type air purification apparatus configured as described above, the spray water W ₁ ejected from the nozzle 51 collides with the mesh member 65 in the water spray chamber 41 and is subdivided into fine spray. Since it becomes the water W _2, it becomes easy to make the spray water W ₂ fine in the water spray chamber 41 without reducing the diameter of the nozzle hole of the nozzle 51.
[0032]
That is, in the conventional water spray type air purification device, if the diameter of the nozzle hole of the nozzle is reduced to make the spray water finer, the nozzle hole is clogged. Although spraying could not be performed and the spray water in the water spray chamber could not be made fine, in the present invention, since the mesh member 65 is disposed, the spray water W ₂ can be made sufficiently fine. Become.
[0033]
As a result, the dust can be sufficiently wetted, and the dust removal efficiency in the water spray chamber 41 can be significantly improved as compared with the conventional case.
Further, in the water spray type air purification device described above, the spray water W ₁ and spray water W ₂ from the nozzle 51 are sprayed from the side of the flow of air containing dust in the water spray chamber 41, and this spray water W ₁ or dust in the air colliding with the spray water W _2, together with the spray water W ₂ collides with the partition plate 63, by spraying water W ₂ is trapped in the water film formed on the surface of the partition plate 63, the water film Since it falls along the partition plate 63 with the fall of the water, the dust removal efficiency in the water spray chamber 41 can be significantly improved as compared with the prior art.
[0034]
That is, in the water spray type air purification device described above, dust in the air collides with the partition plate 63 together with the spray water W ₂ and is reliably captured by the water film formed on the surface of the partition plate 63. As described above, a large amount of dust that does not fall naturally does not occur, and sufficient removal efficiency for dust can be obtained.
[0035]
Further, since the dust is sufficiently removed in the water spray chamber 41, the amount of dust flowing into the water separator 53 is reduced. As a result, the amount of dust attached to the water separator 53 is reduced, and the water It becomes possible to reduce that the separation efficiency of the separator 53 falls.
[0036]
Further, in the water spray type air purification device described above, dust in the air that collides with the jet water W ₁ or spray water W ₂ sprayed from the nozzle 51 is caused to collide with the wall surface 41a together with the spray water W ₂ , and the spray water W _{Since the} water film formed on the surface of the wall surface 41a is captured by 2, the dust removal efficiency in the water spray chamber 41 can be further improved.
[0037]
In the embodiment described above, an example in which the main pipe 47b and the branch pipe 49 are arranged on both sides of the partition plate 63 has been described. However, the present invention is not limited to such an embodiment, and these main pipes are not limited thereto. Of course, the 47b and the branch pipe 49 are not necessarily arranged.
[0038]
In the embodiment described above, an example in which one partition plate 63 is provided has been described. However, the present invention is not limited to such an embodiment, and a plurality of partition plates 63 are provided at predetermined intervals. Of course, it is also good.
[0039]
【The invention's effect】
As described above, in the water spray type air purifying device of the present invention, the spray water ejected from the nozzle collides with the mesh member in the water spray chamber and is subdivided into fine spray water. There is an advantage that it is possible to easily make the spray water fine in the water spray chamber without reducing the diameter of the nozzle hole.
[Brief description of the drawings]
FIG. 1 is a top view showing an example of a water spraying apparatus which is a related technique of the present invention.
FIG. 2 is a side view seen from the direction II in FIG.
FIG. 3 is a cross-sectional view taken along the line III-III of FIG. 4, showing an embodiment of the water spray type air purification device of the present invention.
4 is a cross-sectional view taken along line IV-IV in FIG.
5 is a cross-sectional view taken along line VV of FIG. 6 showing a conventional water spray type air purification device.
6 is a cross-sectional view taken along line VI-VI in FIG.
[Explanation of symbols]
41 Water spraying chamber 45 Water spraying device 51 Nozzle 53 Water separator 65 Net member W ₁ jet water W ₂ spray water

Claims (1)

A water spray chamber through which dusty air is passed in the horizontal direction from the upstream side to the downstream side;
A water spraying device having a plurality of nozzles for spraying water from the side of the air flow including the dust disposed in the water spraying chamber;
A water separator that is disposed downstream of the water spray chamber and removes moisture contained in the air that has passed through the water spray chamber;
A water tank disposed below the water spray chamber;
A circulation line for circulating water in the water reservoir to the water spray device;
In the water spray type air purification device provided with
A water spray type air purification device comprising a mesh member for subdividing granular water ejected from the nozzle in the direction of water ejection from the nozzle.

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