JP7640064B2 - Wet Dust Collector - Google Patents

Description

The present invention relates to a wet dust collector that removes dust by bringing air containing dust into contact with a liquid.

A wet dust collector (scrubber) is a device that removes dust, garbage, odors, impurities, etc. (hereinafter simply referred to as dust, etc.) contained in the exhaust gas of a treatment device or the air by contacting it with a liquid. Patent Document 1 discloses a deodorizing device that includes an introduction section that introduces the gas to be treated into an odor capture liquid, a gas-liquid mixing section that mixes the gas to be treated with the odor capture liquid to remove odors in the gas to be treated, a liquid supply port for supplying the odor capture liquid, and a liquid discharge section that flows out and discharges the odor capture liquid that has captured the odor.

Patent document 2 discloses a scrubber that has a cleaning liquid container, a gas inlet pipe disposed in the container, and a partition wall, the gas inlet pipe having multiple blow-out holes, and the multiple blow-out holes being provided at different positions in the vertical direction, the side of the compartment being closed by the partition wall, and the partition wall having a through hole near its bottom through which the cleaning liquid flows.

JP 2015-196120 A JP 2004-113919 A

In wet dust collectors, air containing dust particles is sucked in, brought into contact with liquid, and discharged while being agitated. In this case, the more scrubber generating points where the air containing dust particles comes into contact with and agitates the liquid, the higher the dust collection effect. However, increasing the number of scrubber generating points leads to an increase in the size of the equipment. Also, increasing the number of scrubber generating points increases the size of the container that seals the air and liquid, and in order to generate a scrubber, it is necessary to increase the pressure to suck in (or exhaust) the air. This requires high capacity from the blower (or suction) device.

The present invention aims to provide a wet dust collection device that can reduce the size of the device configuration and perform efficient dust collection.

One aspect of the present invention is a wet dust collector that includes a container for storing liquid, a tubular section that extends in the vertical direction of the container and is provided midway from the outside of the container to the inside, a lower partition wall that extends in the vertical direction in a region surrounding the outside of the outer periphery of the tubular section inside the container, is provided radially away from the tubular section, has a communication hole at the bottom, and is open at the top, an upper partition wall that extends in the vertical direction in a region surrounding the outside of the outer periphery of the lower partition wall inside the container, is provided radially away from the lower partition wall, is closed at the top, and is open at the bottom, and a vent that communicates with a space outside the upper partition wall inside the container, where the upper partition wall and the lower partition wall are arranged so that they overlap each other in the radial direction, and the upper end of the lower partition wall is provided at a position higher than the lower end of the tubular section, and the lower end of the upper partition wall is provided at a position higher than the lower end of the tubular section and lower than the upper end of the lower partition wall.

In such a wet dust collector, when collecting dust, the pressure in the space of the container that communicates with the ventilation section is made lower than the pressure in the tube section while the container contains liquid. As a result, air containing dust and the like sucked into the container from the tube section travels up and down between the tube section and the lower partition section, and between the lower partition section and the upper partition section, while moving in the outer circumferential direction while contacting the liquid, and is discharged from the ventilation section. At this time, a scrubber phenomenon occurs in which air and liquid are mixed at the lower end portion of the upper partition section. In addition, by setting the lower end of the upper partition section at a position higher than the lower end of the tube section and lower than the upper end of the lower partition section, the scrubber phenomenon can be generated simultaneously in multiple locations.

In the above wet dust collector, the cylinder, the upper partition and the lower partition are arranged concentrically with each other, and when the space between the cylinder and the lower partition is the first space and the space between the lower partition and the upper partition is the second space, the cross-sectional areas of the first space and the second space in the left-right direction are different from each other. When the air flow rate is the same, the air flow rate is slow in a space with a large area and fast in a space with a small area. As a result, the stirring phenomenon caused by the scrubber occurring at multiple locations is not uniform, and the air and liquid are stirred in different states, and a wide variety of dust particles contained in the air can be captured by the liquid. In addition, by reducing the cross-sectional area of the first space and the second space, the distance between the partitions can be reduced, making it possible to construct more partition walls without changing the container size, and the contact path can be multi-staged.

In the above wet dust collector, it is preferable that the height of the lower end of the upper partition is set to a height such that when air is sucked in through the ventilation section, the timing at which the surface of the liquid inside the tube reaches the lower end of the tube is substantially equal to the timing at which the surface of the liquid inside the upper partition reaches the lower end of the upper partition. This allows the scrubber phenomenon to occur simultaneously at both the lower end of the tube and the lower end of the upper partition.

In the above wet dust collection device, the upper partition section and the lower partition section are each provided in multiple stages, and the multiple stages of the upper partition section and the multiple stages of the lower partition section are arranged alternately in the radial direction, with the radially innermost lower partition section being proximal to the cylindrical section, and the lower end of each of the multiple stages of the upper partition section may be arranged at a higher position the further outward in the radial direction. This makes it possible to uniformly contact and mix the air and liquid on the lower surface of each path. Also, by increasing the number of up and down reciprocations, the number of times that the air and liquid are contacted and mixed at the lower end of the upper partition section is increased, and as a result, the dust collection efficiency can be improved. Also, even with a multi-stage configuration, it is possible to minimize the increase in size of the device while increasing the number of times that the air and liquid are contacted and mixed.

In the above wet dust collector, the height of each upper end of the multi-stage lower partition wall may be made constant. This makes the heights of the upper ends of the multi-stage lower partition wall uniform, making it easier to set the path length of contact between air and liquid and the internal pressure depending on the height of the multi-stage upper partition wall. In addition, a liquid spray function is added to paths where the scrubber effect is not occurring.

In the above-mentioned wet dust collector, a turbulence generating section for disturbing the flow of the liquid may be provided at least at the lower end of the tubular section and the lower end of the upper partition section. This can enhance the agitation effect between the air containing dust and the liquid when they come into contact with each other.

The present invention makes it possible to provide a wet dust collection device that can reduce the size of the device configuration and perform efficient dust collection.

1 is a schematic cross-sectional view illustrating a wet dust collecting device according to a first embodiment; 1 is a schematic plan view illustrating a wet dust collecting device according to a first embodiment; 1 is a schematic perspective view illustrating a main part of a wet dust collecting device according to a first embodiment; 5A to 5C are schematic cross-sectional views illustrating the operation of the wet dust collecting device according to the first embodiment. FIG. 11 is a schematic cross-sectional view illustrating a wet dust collecting device according to a second embodiment. 7A to 7C are schematic cross-sectional views illustrating the operation of a wet dust collecting device according to a second embodiment. FIG. 11 is a schematic diagram illustrating a modified example (part 1) of the wet dust collecting device according to the embodiment; FIG. 11 is a schematic perspective view illustrating a modified example (part 2) of the wet dust collecting device according to the embodiment. FIG. 1 is a schematic diagram illustrating a dust collection system.

The following describes an embodiment of the present invention with reference to the drawings. In the following description, the same components are given the same reference numerals, and the description of components that have already been described will be omitted as appropriate.

First Embodiment
FIG. 1 is a schematic cross-sectional view illustrating a wet dust collecting device according to a first embodiment.
FIG. 2 is a schematic plan view illustrating the wet dust collecting device according to the first embodiment.
FIG. 3 is a schematic perspective view illustrating a main part of the wet dust collecting device according to the first embodiment.
The wet dust collector 1A according to this embodiment is a device that sucks in air A containing dust and the like, mixes it with liquid L, and discharges air B from which the dust and the like has been removed. The wet dust collector 1A includes a container 10 that contains liquid L such as water, a tube portion 20 extending in the vertical direction of the container 10, a lower partition portion 30 extending in the vertical direction in a region surrounding the outside of the outer periphery of the tube portion 20, an upper partition portion 40 extending in the vertical direction in a region surrounding the outside of the outer periphery of the lower partition portion 30, and a ventilation portion 50 that communicates with the container. In this embodiment, the vertical direction is also referred to as the vertical direction, and the direction perpendicular to the vertical direction is also referred to as the left-right direction or radial direction.

The container 10 has a bottom 11, a lid 12, and a side wall 13. The tube 20 is provided so as to extend in the vertical direction of the container 10 from the outside of the container 10 to partway inside the container 10, penetrating the lid 12. In this embodiment, the tube 20 is provided in a cylindrical shape. Air A containing dust and the like is drawn from the outside of the container 10 to the inside by the tube 20.

The lower partition 30 is provided so as to extend vertically in a region surrounding the outside of the outer periphery 20b of the tube portion 20 inside the container 10. The lower partition 30 is provided so as to be spaced apart from the tube portion 20 in the radial direction of the tube portion 20. In other words, the lower partition 30 is provided so as to be spaced apart from the outer periphery 20b of the tube portion 20 in the radial direction while partially overlapping it.

In addition, a communication hole 30h is provided in the lower part (lower end 302 side) of the lower partition part 30. For example, a part of the lower end 302 of the lower partition part 30 is connected to the bottom part 11 of the container 10, and the part not connected to the bottom part 11 is the communication hole 30h. By providing the communication hole 30h, the lower partition part 30 is not blocked when injecting the liquid L into the container 10 or discharging the liquid L from the container 10. The highest position of the communication hole 30h is set lower than the lower end 202 of the tube part 20. In addition, the communication hole 30h may be a plurality of holes provided in the lower part of the lower partition part 30.

On the other hand, the upper part (upper end 301 side) of the lower partition part 30 is open. In this embodiment, the lower end 302 of the lower partition part 30 is in contact with the bottom part 11 and extends upward from the position of the bottom part 11 to halfway up the container 10. Also, in this embodiment, the lower partition part 30 is provided in a cylindrical shape. The lower partition part 30 is provided outside the tube part 20, which is also provided in a cylindrical shape, and is provided concentrically with the tube part 20. Note that the lower partition part 30 does not necessarily need to be connected to the bottom part 11 of the container 10, and may be supported by the tube part 20 or the upper partition part 40.

The upper partition portion 40 is provided inside the container 10, extending in the vertical direction in the area outside the outer periphery 30b of the lower partition portion 30. The upper partition portion 40 is provided spaced apart from the tubular portion 20 and the lower partition portion 30 in the radial direction of the tubular portion 20. In other words, the upper partition portion 40 is provided so as to be radially spaced apart from the outer periphery 20b of the tubular portion 20 and the outer periphery 30b of the lower partition portion 30 while partially overlapping them.

The upper part of the upper partition 40 (the upper end 401 side) is closed. For example, the upper part of the upper partition 40 may be closed by a part of the lid 12 of the container 10, or may be closed by a member other than the lid 12.

On the other hand, the lower part (lower end 402 side) of the upper partition part 40 is open. In this embodiment, the upper end 401 of the upper partition part 40 contacts the lid part 12 and extends downward from the position of the lid part 12 to halfway down the container 10. Also, in this embodiment, the upper partition part 40 is provided in a cylindrical shape. The upper partition part 40 is provided outside the tube part 20 and the lower partition part 30, which are also provided in a cylindrical shape, and is provided concentrically with the tube part 20 and the lower partition part 30.

The ventilation section 50 is provided in communication with the exhaust chamber 10E, which is the space inside the container 10 outside the upper partition section 40. The ventilation section 50 is a passage for discharging air A from the exhaust chamber 10E to the outside of the container 10.

In the wet dust collector 1A according to this embodiment, the upper partition 40 and the lower partition 30 are arranged so that a portion of each of them overlaps radially. In addition, the upper end 301 of the lower partition 30 is provided at a higher position than the lower end 202 of the tubular portion 20, and the lower end 402 of the upper partition 40 is provided at a higher position than the lower end 202 of the tubular portion 20 and lower than the upper end 301 of the lower partition 30.

As a result, multiple spaces (hereinafter referred to as scrub spaces) are formed within the container 10, separated by the tube portion 20, the lower partition portion 30, the upper partition portion 40, and the side wall portion 13 of the container 10. Radially adjacent scrub spaces communicate above or below. The communicating upper and lower positions alternate in the radial direction. Therefore, the flow path formed by the multiple scrub spaces is provided to extend in the radial direction while reciprocating up and down. In the example shown in Figure 2, the first space R1 and the second space R2 are examples of scrub spaces.

FIG. 4 is a schematic cross-sectional view illustrating the operation of the wet dust collecting device according to the first embodiment.
When dust collection is performed in the wet dust collector 1A according to this embodiment, first, liquid L is placed in the container 10. For example, water is used as the liquid L. The liquid L is placed in the container 10 until the water surface reaches a position P that is higher than the lower end 402 of the upper partition wall portion 40 on the outermost periphery.

Next, the pressure in the exhaust chamber 10E, which is connected to the ventilation section 50, is made lower than the pressure in the tube section 20. For example, a blower (not shown) connected to the ventilation section 50 is operated to suck air B from the exhaust chamber 10E through the ventilation section 50. As a result, the water level, which was the same in each scrub space in the container 10, rises in the exhaust chamber 10E at the boundary where it is blocked by liquid L, and then falls in the relatively blocked inner scrub space.

The liquid L in the container 10 is connected by a communication hole 30h provided at the bottom of the lower partition 30. Therefore, when the water level in the exhaust chamber 10E rises, the drop in the water level in the scrub space inside the exhaust chamber 10E changes depending on the cross-sectional area in the left-right direction of each scrub space (Pascal's principle). In this embodiment, the cross-sectional area in the left-right direction of the tube portion 20 is the smallest, and the outer scrub spaces have a larger area. Therefore, as the water level in the exhaust chamber 10E rises, the drop in the water level in the tube portion 20 is the largest, and the drop in the water level in the outer scrub spaces is smaller.

As suction from the ventilation section 50 continues, the level of the liquid L in the tube section 20 reaches the lower end 202, and the water level in the scrubbing space inside the upper partition section 40 reaches the lower end 402 of the upper partition section 40. As a result, the air A in the tube section 20 is drawn into the container 10.

The air A drawn in from the tube portion 20 contains dust particles and the like. The air A drawn in from the tube portion 20 is drawn into the liquid L from the lower end 202 of the tube portion 20, and a scrubber phenomenon occurs between the liquid L present between the water surface C and the water surface D, causing agitation, and the dust particles and the like contained in the air A are taken into the liquid L.

Next, the air A that has risen up from the gap between the tube section 20 and the lower partition section 30 is drawn into the gap between the lower partition section 30 and the upper partition section 40, and is drawn back into the liquid L at the position of the water surface E where it has reached the lower end 402 of the upper partition section 40. This causes a scrubber phenomenon between the liquid L present between the water surface E and the water surface F, resulting in agitation. Even when the air A comes into contact with the liquid L here, dust particles and other particles contained in the air A are drawn into the liquid L. The air B from which the dust particles and other particles have been removed is then discharged to the outside from the exhaust chamber 10E via the ventilation section 50.

In this way, in the wet dust collector 1A according to this embodiment, air A containing dust and the like sucked into the container 10 from the tube section 20 moves back and forth between the tube section 20 and the lower partition section 30, and between the lower partition section 30 and the upper partition section 40 in the vertical direction, while stirring and coming into contact with the liquid L (scrubber phenomenon) in the circumferential direction, and is discharged from the ventilation section 50. As air A moves back and forth up and down, it repeatedly undergoes the scrubber phenomenon with the liquid L, so that dust and the like can be effectively taken in by the liquid L, and air B from which the dust and the like has been removed can be discharged from the ventilation section 50.

In this case, the lower end 402 of the upper partition wall 40 is located higher than the lower end 202 of the tube portion 20 and lower than the upper end 301 of the lower partition wall 30, so that the scrubber phenomenon can be efficiently generated at multiple locations of the lower end 402 of the upper partition wall 40 while ensuring a long contact path between the air A and the liquid L.

In addition, it is preferable to set the relationship between the height difference between the lower end 202 of the tube section 20 and the lower end 402 of the upper partition section 40 and the height of the water surface of the liquid L before operation so that when air B is sucked in from the ventilation section 50, the timing at which the position of the water surface C in the tube section 20 reaches the lower end 202 of the tube section 20 and the timing at which the water surface E reaches the lower end 402 of the upper partition section 40 are almost (substantially) equal. As a result, air A is drawn into the liquid L from the lower end 202 of the tube section 20, and the contact and mixing of the air A and the liquid L is timed in the small spaces between the water surface C and the water surface D, and between the water surface E and the water surface F. Therefore, the mixing phenomenon (scrubber phenomenon) can be generated simultaneously in multiple places with minimal pressure loss.

As shown in FIG. 2, in the wet dust collector 1A according to this embodiment, when the space between the tube portion 20 and the lower partition portion 30 is defined as the first space R1, and the space between the lower partition portion 30 and the upper partition portion 40 is defined as the second space R2, the cross-sectional area S1 of the first space R1 in the left-right direction and the cross-sectional area S2 of the second space R2 may be different from each other. As a result, the stirring phenomenon caused by the scrubber that occurs at multiple locations is no longer uniform, and the air and liquid L are stirred in different states, making it possible to capture a wide variety of dust particles contained in the air with the liquid.

In addition, in order to ensure a predetermined flow rate of air A, if the left-right gap of the first space R1 and the left-right gap of the second space R2 are made the same, the cross-sectional area S2 of the second space R2, which is relatively on the outside, will be larger than the cross-sectional area S1 of the first space R1, which is relatively on the inside. By making the cross-sectional areas S1 of the first space R1 and S2 of the second space R2 have a relationship of S1 < S2, it is possible to ensure an area through which air A can pass, and to increase the drop in the water level when suction is performed in spaces closer to the center.

By utilizing this principle and optimizing the cross-sectional area of each space and the position of the lower end 402 of the upper partition wall 40, the scrubber phenomenon can be generated in a desired order or simultaneously at multiple locations. For example, if the cross-sectional area S0 of the tube portion 20, the cross-sectional area S1 of the first space R1, and the cross-sectional area S2 of the second space R2 have a relationship of S0<S1<S2, the water level drop in the tube portion 20 is greatest, and the water level drop is smaller from the first space R1 close to the tube portion 20 to the second space R2 on the outside. By setting the position of the lower end 402 of the upper partition wall 40 according to the difference in the magnitude of this water level drop, the water level reaches the lower end 402 of the upper partition wall 40 at the same time as it reaches the lower end 202 of the tube portion 20, and the scrubber phenomenon can be generated simultaneously in each space.

Conversely, by setting the position of the lower end 402 of the upper partition portion 40, the timing of the occurrence of the scrubber phenomenon in each space can be made different. In this way, the mixing ratio of air A and liquid L can be optimized by changing the timing of the occurrence of the scrubber phenomenon in the first space R1 and the second space R2 and the water level difference between the water levels C and D, and E and F. Here, the mixing ratio refers to the ratio between the amount of water present at the occurrence point when the scrubber phenomenon occurs and the amount of air being mixed. The greater the water level difference in the scrubber space, the higher the mixing ratio of water and air, and the greater the effect of capturing dust and the like contained in the air A.

Second Embodiment
FIG. 5 is a schematic cross-sectional view illustrating a wet dust collecting device according to the second embodiment.
In the wet dust collector 1B according to the present embodiment, the upper partition wall portion 40 and the lower partition wall portion 30 are each provided in multiple stages. In the wet dust collector 1B, the lower partition wall portion 30, which is the innermost in the radial direction of the cylindrical portion 20, is proximal to the cylindrical portion 20, and the multiple stages of the upper partition wall portion 40 and the multiple stages of the lower partition wall portion 30 are alternately arranged in the radial direction of the cylindrical portion 20. Here, for convenience of explanation, a set of one upper partition wall portion 40 and one lower partition wall portion 30 adjacent thereto on the inside is referred to as an upper/lower partition wall portion 60, and one set of upper/lower partition wall portions 60 is referred to as one stage. In addition, in the multiple stages of the upper/lower partition wall portions 60, the innermost stage is referred to as the first stage, and the nominal number of stages increases toward the outside.

In the wet dust collector 1B, in the example shown in FIG. 5, three stages of upper and lower partition wall sections 60 are provided. The number of stages of the upper and lower partition wall sections 60 is not limited to three stages, and more stages may be provided. In the multi-stage upper and lower partition wall sections 60, the upper partition wall sections 40 and the lower partition wall sections 30 are alternately arranged with gaps in the radial direction. In addition, adjacent upper partition wall sections 40 and lower partition wall sections 30 are arranged so that a portion of each overlaps with each other in the radial direction.

In such a multi-stage wet dust collector 1B, the lower ends 402 of the upper partitions 40 in the multi-stage upper and lower partitions 60 are positioned higher on the radially outer side.

FIG. 6 is a schematic cross-sectional view illustrating the operation of the wet dust collecting device according to the second embodiment.
When dust collection is performed in the wet dust collector 1B according to this embodiment, first, liquid L is placed in the container 10. For example, water is used as the liquid L. The liquid L is placed in the container 10 until the water level reaches a position P higher than the lower end 202 of the tube portion 20. When the upper and lower partitions 60 are provided in multiple stages, the initial position P of the liquid L only needs to be higher than the lower end 402 of the innermost upper partition 40.

Next, the pressure in the exhaust chamber 10E, which is connected to the ventilation section 50, is made lower than the pressure in the tube section 20. For example, a blower (not shown) connected to the ventilation section 50 is operated to suck air B from the exhaust chamber 10E through the ventilation section 50. As a result, the water level, which was the same in each scrub space in the container 10, rises in the exhaust chamber 10E at the boundary where it is blocked by liquid L, and then falls in the relatively blocked inner scrub space.

As suction from the ventilation section 50 continues, the level of the liquid L in the tube section 20 reaches the lower end 202, and the water level in the scrubbing space inside the upper partition section 40 reaches the lower end 402 of the upper partition section 40. As a result, the air A in the tube section 20 is drawn into the container 10.

The air A drawn in from the tube portion 20 contains dust particles and the like. The air A drawn in from the tube portion 20 is drawn into the liquid L from the lower end 202 of the tube portion 20, and a scrubber phenomenon occurs between the liquid L present between the water surface C and the water surface D, causing agitation, and the dust particles and the like contained in the air A are taken into the liquid L.

Next, the air A that has risen above the water surface D is drawn into the gap between the lower partition 30 and the upper partition 40 in the first stage of the upper and lower partitions 60, and is drawn back into the liquid L from the water surface E at the lower end 402 of the upper partition 40. Then, a scrubber phenomenon occurs between the liquid L present between the water surface E and the water surface F, causing agitation.

Next, the air A that has risen above the water surface F is drawn into the gap between the lower partition 30 and the upper partition 40 in the second stage upper and lower partitions 60, and is drawn back into the liquid L from the water surface G at the lower end 402 of the upper partition 40. Then, a scrubber phenomenon occurs between the water surface G and the liquid L present between the water surface G and the water surface H, causing agitation.

Next, the air A that has risen above the water surface H is drawn into the gap between the lower partition 30 and the upper partition 40 in the third stage of the upper and lower partitions 60, and is drawn into the exhaust chamber 10E through the gap between the lower end 402 of the upper partition 40 and the water surface I. Then, the air B from which dust and other particles have been removed is exhausted to the outside from the exhaust chamber 10E through the ventilation section 50.

In the wet dust collector 1B, the more stages there are in the upper and lower partitions 60, the more times the air A and the liquid L are stirred when they come into contact with each other, improving the dust collection effect due to the scrubbing action of the air A and the liquid L. In addition, by making the upper and lower partitions 60 multi-stage, the dust collection effect can be improved while minimizing the size of the device.

In addition, in the wet dust collector 1B, the lower ends 402 of the upper partitions 40 in the multi-stage upper and lower partitions 60 are located at higher positions on the radially outer side, and by changing this position, it is possible to control the timing at which the scrubber action occurs and the mixing ratio of the air A and the liquid L.

Here, in the wet dust collector 1B, the height of each upper end 301 of the lower partition wall 30 in the multi-stage upper and lower partition wall 60 may be made constant. This makes the height of the upper end 301 of the multi-stage lower partition wall 30 uniform, making it easier to set the path length of contact between air and liquid and the internal pressure depending on the height of the multi-stage upper partition wall 40. Also, in paths where the scrubber effect is not occurring, the function of liquid spraying is effectively added.

(Modification)
Next, a modification of the wet dust collector according to the present embodiment will be described.
FIG. 7 is a schematic diagram illustrating a modified example (part 1) of the wet dust collecting device according to the present embodiment.
In the wet dust collector 1C shown in Fig. 7, the cylinders of the cylinder portion 20, the upper partition wall portion 40, and the lower partition wall portion 30 have a rectangular shape. At least one of the cylinder portion 20, the upper partition wall portion 40, and the lower partition wall portion 30 may have a shape other than a cylinder. That is, it may have a polygonal prism shape other than a rectangle. In the polygonal prism shape, turbulence is more likely to occur in the liquid L when the air A and the liquid L are mixed, compared to the cylindrical shape, and the mixing efficiency is improved.

FIG. 8 is a schematic perspective view illustrating a modified example (part 2) of the wet dust collecting device according to the present embodiment.
In the wet dust collector 1D shown in Fig. 8, a turbulent flow generating section 80 for disturbing the flow of the liquid L is provided at the lower end 302 of the upper partition 40. As an example of the turbulent flow generating section 80, in the example shown in Fig. 9, the lower end 302 is formed in a zigzag shape. This can enhance the agitation effect between the air containing dust and the liquid when they come into contact with each other.

The turbulence generating section 80 may be provided at the lower end 202 of the tube section 20. The turbulence generating section 80 may be a zigzag shape provided at the lower ends 202 and 302, or may be a net or protrusions provided midway through the flow path, as long as it generates flow resistance. The turbulence generating section 80 may be a large number of tiny holes provided at the lower part of the tube section 20 or the lower part of the upper partition section 40. The tiny holes may have the same diameter or may have random diameters. By providing a large number of tiny holes, turbulence is generated when part of the air A or liquid L passes through the tiny holes, enhancing the stirring effect.

(Examples of application)
Next, a dust collection system to which the wet dust collector according to this embodiment is applied will be described.
FIG. 9 is a schematic diagram illustrating a dust collection system.
The dust collection system 100 includes a wet dust collection device 1B according to this embodiment in a housing 110. Although the wet dust collection device 1B is applied to the dust collection system 100 shown in Fig. 9, the wet dust collection devices 1A, 1C, and 1D may also be applied.

The housing 110 is provided with a blower 120 for sucking air A from the exhaust chamber 10E of the container 10 through the ventilation section 50. A drain 130 for discharging liquid L from the container 10 is provided at the bottom of the container 10. A separation plate 55 may be provided in the exhaust chamber 10E to facilitate separation of the liquid L and the air B when air B is sucked through the ventilation section 50.

In the wet dust collector 1B according to this embodiment, the lower partition 30 and the upper partition 40 are provided concentrically with the tube 20, so that the air A drawn in from the tube 20 can be brought into contact with the liquid L while being moved up and down by the lower partition 30 and the upper partition 40. In other words, when the lower partition 30 and the upper partition 40 are configured in a multi-stage configuration, the contact path between the air A and the liquid L extends in the vertical direction, and only expands in the radial direction by the number of stages, but the height does not change. This makes it possible to lengthen the contact path between the air A and the liquid L while suppressing the increase in the size of the device configuration. In addition, since the increase in suction resistance can be suppressed even with multiple stages, the load on the blower 120 can be suppressed, which also contributes to the miniaturization of the blower 120.

As described above, the wet dust collection devices 1A, 1B, 1C, and 1D according to this embodiment enable the device configuration to be miniaturized while also enabling efficient dust collection.

Although the present embodiment and its specific examples have been described above, the present invention is not limited to these examples. For example, the example in which the tube portion 20, the lower partition portion 30, and the upper partition portion 40 are arranged concentrically with each other has been shown, but they do not necessarily have to be concentric, and some of the central positions may be shifted or eccentric in one direction. In addition, in this embodiment, air A is sucked from inside the container 10 through the ventilation portion 50, but air A may be sent from the tube portion 20. In addition, those in which a person skilled in the art appropriately adds, deletes, or modifies the design of the above-mentioned embodiments or their specific examples, or those in which the features of each embodiment are appropriately combined, are also included within the scope of the present invention as long as they include the gist of the present invention.

The wet dust collectors 1A, 1B, 1C, and 1D according to this embodiment can be applied to various processing and processing devices such as laser processing devices, and can also be suitably used as air purifiers.

1A, 1B, 1C, 1D...Wet dust collection device 10...Container 10E...Exhaust chamber 11...Bottom 12...Lid 13...Side wall 20...Cylindrical section 20b...Outer periphery 30...Lower partition 30b...Outer periphery 30h...Communicating hole 40...Upper partition 50...Ventilation section 55...Separator plate 60...Upper and lower partitions 80...Turbulence generating section 100...Dust collection system 110...Housing 120...Blower 130...Drain 202...Lower end 301...Upper end 302...Lower end 401...Upper end 402...Lower end A, B...Air C, D, E, F, G, H, I...Water surface L...Liquid P...Position R1...First space R2...Second space S0, S1, S2...Cross-sectional area

Claims (3)

A container for containing a liquid;
A cylindrical portion extending in the vertical direction of the container and extending from the outside to the middle of the inside of the container;
a multi-stage lower partition portion extending in the up-down direction in a region surrounding the outside of the outer periphery of the cylindrical portion inside the container, spaced apart from the cylindrical portion in the radial direction of the cylindrical portion, having a communication hole at the lower portion and an open upper portion;
a multi-stage upper partition portion extending in the vertical direction in a region surrounding the outer periphery of each of the multi-stage lower partition portions inside the container, spaced apart from the cylindrical portion and each of the multi-stage lower partition portions in the radial direction, and having a closed upper portion and an open lower portion;
a vent portion communicating with a space outside the multi-stage upper partition portion inside the container;
Equipped with
the lower partition wall portion that is the innermost in the radial direction is proximal to the cylindrical portion, and the upper partition wall portions and the lower partition wall portions are alternately arranged in the radial direction;
the multi-stage upper partition wall portion and the multi-stage lower partition wall portion are disposed so as to partially overlap each other in the radial direction,
an upper end of each of the multiple-stage lower partition portions is provided at a position higher than a lower end of the cylindrical portion,
A wet dust collecting device, wherein the lower ends of each of the multi-stage upper partition portions are higher than the lower end of the cylindrical portion and lower than the upper ends of each of the multi-stage lower partition portions, and the positions are higher toward the outside in the radial direction . The wet dust collector according to claim 1, wherein the height of each upper end of the multi-stage lower partition wall is constant. The wet dust collector according to claim 1, wherein a turbulence generating section for disturbing the flow of the liquid is provided at least on the lower end of the cylindrical section and on the lower end of each of the upper partition sections of the multi-stage.

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