Dust collector
A dust collector that collects welding fumes includes: a tank that stores water in a non-full state; a first tower that stands upright from an upper surface of the tank, and is configured to receive air containing the welding fumes from an upper part of the first tower and to guide the air to the tank; a second tower that stands upright from the upper surface of the tank, and is configured such that air discharged from the tank passes through the second tower; a bottleneck structure portion in which a vertically intermediate part of the first tower is narrowed; a mist generator configured to generate mist in the first tower; and a filter housed in the second tower.
1 . A dust collector that collects welding fumes, the dust collector comprising:
a tank that stores water in a non-full state;
a first tower that stands upright from an upper surface of the tank, and is configured to receive air containing the welding fumes from an upper part of the first tower and to guide the air to the tank;
a second tower that stands upright from the upper surface of the tank, and is configured such that air discharged from the tank passes through the second tower;
a bottleneck structure portion in which a vertically intermediate part of the first tower is narrowed;
a mist generator configured to generate mist in the first tower; and
a filter housed in the second tower, wherein:
an eliminator is housed in a part of the second tower, and a plurality of the filters are housed above the eliminator at intervals,
the eliminator includes a plurality of barrier layers, each barrier layer having a plurality of elongated main plate portions disposed on a same plane with gaps between the respective main plate portions,
the gaps between the main plate portions of each barrier layer are arranged so as to be shifted from the gaps in an adjacent barrier layer in a direction transverse to the same plane,
each main plate portion includes, at two ends, side walls extending perpendicular to the main plate portion, and tip ends of the side wall are bent at a right angle to face the main plate portion.
2 . The dust collector according to claim 1 , wherein adjacent opening edges of lower end openings of the first tower and the second tower are arranged in parallel.
3 . The dust collector according to claim 1 , wherein the mist generator is configured to eject mist downward.
4 . The dust collector according to claim 1 , wherein the bottleneck structure portion includes:
a throat portion that has a substantially uniform cross-sectional shape and extends in a vertical direction, the mist generator being disposed inside the throat portion;
a lower pyramid portion expanding downward from the throat portion; and
an upper pyramid portion that expands upward from the throat portion, is shorter than the lower pyramid portion, and has a larger expansion angle than an expansion angle of the lower pyramid portion.
5 . The dust collector according to claim 2 , wherein the bottleneck structure portion includes:
a throat portion that has a substantially uniform cross-sectional shape and extends in a vertical direction, the mist generator being disposed inside the throat portion;
a lower pyramid portion expanding downward from the throat portion; and
an upper pyramid portion that expands upward from the throat portion, is shorter than the lower pyramid portion, and has a larger expansion angle than an expansion angle of the lower pyramid portion.
6 . The dust collector according to claim 3 , wherein the bottleneck structure portion includes:
a throat portion that has a substantially uniform cross-sectional shape and extends in a vertical direction, the mist generator being disposed inside the throat portion;
a lower pyramid portion expanding downward from the throat portion; and
an upper pyramid portion that expands upward from the throat portion, is shorter than the lower pyramid portion, and has a larger expansion angle than an expansion angle of the lower pyramid portion.
7 . The dust collector according to claim 1 , further comprising a window portion in a part of the bottleneck structure portion, the window portion including a translucent member.
8 . The dust collector according to claim 2 , further comprising a window portion in a part of the bottleneck structure portion, the window portion including a translucent member.
9 . The dust collector according to claim 3 , further comprising a window portion in a part of the bottleneck structure portion, the window portion including a translucent member.
10 . The dust collector according to claim 4 , further comprising a window portion in a part of the bottleneck structure portion, the window portion including a translucent member.
11 . The dust collector according to claim 1 , further comprising an air introduction portion provided on an upper part of the bottleneck structure portion and on a surface opposite to the second tower, and configured to receive the air.
12 . The dust collector according to claim 2 , further comprising an air introduction portion provided on an upper part of the bottleneck structure portion and on a surface opposite to the second tower, and configured to receive the air.
13 . The dust collector according to claim 3 , further comprising an air introduction portion provided on an upper part of the bottleneck structure portion and on a surface opposite to the second tower, and configured to receive the air.
14 . The dust collector according to claim 4 , further comprising an air introduction portion provided on an upper part of the bottleneck structure portion and on a surface opposite to the second tower, and configured to receive the air.
15 . The dust collector according to claim 1 , wherein a flow path cross-sectional area of a narrowest part of the first tower is 1/10 to 1/20 times a flow path cross-sectional area of a widest part of the second tower.
16 . The dust collector according to claim 2 , wherein a flow path cross-sectional area of a narrowest part of the first tower is 1/10 to 1/20 times a flow path cross-sectional area of a widest part of the second tower.
17 . The dust collector according to claim 1 , further comprising:
a hopper provided on a bottom part of the tank; and
a discharge port that is provided on a lower end part of the hopper and is openable and closable.
18 . The dust collector according to claim 1 , further comprising a plurality of casters that support a whole of the dust collector.
19 . The dust collector according to claim 1 , wherein the eliminator is inclined in a downward direction relative to a bottom of the second tower.
20 . The dust collector according to claim 1 , further comprising a wave dissipation wall provided in the tank.