JP2961526B2 - Dust collector - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dust collector.

[0002]

2. Description of the Related Art There has been developed an apparatus in which a source of dust, gas or the like is surrounded by an air curtain, and the air curtain is blown in a fixed direction. This air curtain prevents dust and gas from flowing out and creates an artificial vortex inside the air curtain due to the wake effect. This vortex strongly extrudes dust and the like toward the exhaust duct and collects them. Configuration.

[0003]

The above-mentioned conventional dust collector has the following problems. <B> The vortex has a double structure, in which the dust and the like are concentrated at the center of the core, and a relatively low-contamination airflow is formed around the core. Moving. Therefore, it is necessary to transfer not only the highly contaminated core portion but also the surrounding air that is not very contaminated to the duct in large quantities. Therefore, a large power source for moving a large amount of air is required.

<B> When treating contaminated gas after being sucked into the exhaust duct, the gas in the core portion having a high degree of contamination is
The surrounding gas, which is not very contaminated, must be treated at the same time, and large-scale treatment equipment is required.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and it is possible to efficiently and quickly process the gas in the core portion having a high degree of contamination by using a small amount of power. It is intended to provide a dust collector.

[0006]

In order to achieve the above object, the present invention forms an air curtain near a source to be treated such as dust to generate an artificial tornado,
What is claimed is: 1. A dust collecting apparatus for collecting an object to be treated such as dust, comprising: an outer pipe for sucking a vortex around a core of an artificial tornado; and an inner pipe for sucking the core. Provide equipment.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 of the present invention will be described below with reference to the drawings. <B> Fumarole A is a source of gas or dust to be treated. A plurality of fumaroles 1 are installed around this source. The fumarole 1 is a hollow cylindrical body, and the fumarole 1
1 is open. The fumarole 11 opens in a fixed direction in all fumaroles 1. A blower 12 is attached to the upper end or the lower end of the fumarole 1.

The blower 12 can be mounted directly on each column 1 or indirectly by branching a pipe from one blower 12. The compressed air from the blower 12 is supplied to the hollow blast column 1, and blasts the compressed air in a predetermined direction from the blast holes 11 opened on the side surfaces. As a result, an air curtain 2 is formed in a range surrounded by the pillar 1.

<B> Blocking plate A blocking plate 3 is arranged at a position facing the source of generation. The blocking plate 3 is a plate for blocking the flow of exhaust gas. For example, as shown in the figure, the source a is a floor, and the surrounding area is a pillar 1.
In this case, the ceiling plate at the upper end of the column 1 is configured as the blocking plate 3.

<C> Double Pipe Exhaust Duct The blocking plate 3 is provided with an inlet for the outer pipe 4 of the exhaust duct and an inlet for the inner pipe 5 having a diameter smaller than the inner diameter of the outer pipe 4.
That is, the intake portion of the exhaust duct is configured as a double pipe, and the outer pipe 4 and the inner pipe 5 of the double pipe are configured as an exhaust duct.

The other end of the outer tube 4 and the other end of the inner tube 5 are connected to a contaminated gas treatment device via separate suction devices. Outer tube 4
The processing device connected to the other end of the device may have a large capacity but a low processing capability. On the other hand, the processing device connected to the other end of the inner tube 5 has a high processing capacity but may have a small capacity.

<D> Dust collection operation A case where a dust collection operation is performed using the following apparatus will be described. First, compressed air is blown from the blowing hole 11 of the blowing column 1. Since all the directions of the blow holes 11 are directed in a fixed direction, an air curtain 2 directed in a fixed direction is formed around the space surrounded by the columns 1. The flow of the air curtain 2 generates a vortex.

At the same time, since the suction machines of the respective processing devices of the inner tube 5 and the outer tube 4 are driven, the vortex forms a flow toward the inner tube 5 and the outer tube 4. The vortex is constituted by a central core portion 6 and a vortex portion around the core portion. The core portion 6 is elongated under the negative pressure along the center of the vortex by the vortex current and the suction action, and strongly transfers dust and the like toward the inner tube 5.

In the surrounding area, a strong artificial tornado is generated due to the balance between the centrifugal force of the eddy current and the centripetal force of the core 6 under negative pressure. As a result, gas and dust converge on the core part 6,
The gas with a low degree of contamination in the surroundings is efficiently sent to the outer tube 4.

<E> Suction by double pipe The exhaust duct of the apparatus of the present invention is a double pipe. Therefore, the contaminated gas concentrated in the vortex core portion 6 flows toward the inner tube 5 and is efficiently sucked into the inner tube 5 with the core portion 6 being formed. On the other hand, the flow of the gas having a relatively low degree of contamination around it is sucked into the outer tube 4.

Therefore, the processing devices disposed at the other ends of the inner tube 5 and the outer tube 4 do not need to have the same processing capacity, and the processing devices connected to the other ends of the outer tube 4 have a large capacity. , The processing capacity may be low. On the other hand, a processing device connected to the other end of the inner tube 5 has a high processing capacity but a small capacity.

[0017]

[Embodiment 2] As described above, the degree of contamination of the gas sucked by the outer tube 4 is lower than that of the core 6. Therefore, as shown in FIG. 3, it is possible to connect the outer pipe 4 and the fumarole 1 with a bypass pipe 7.

Then, the gas with a low degree of contamination sucked by the outer tube 4 blows out again from the blast holes 11 to form a flow for sucking the polluted gas. By repeatedly circulating in this manner, the processing equipment can be simplified.

[0019]

[Embodiment 3] The above embodiment is an embodiment in which an artificial tornado is generated in the vertical direction. However, if the fumarole 1 is arranged horizontally, an artificial tornado can also be generated in the horizontal direction. . Further, it can be generated not only in an oblique direction or in a straight line but also in a bent state.

In addition, dust can be collected by installing a fumarole in a state where the source of generation of gas or dust is surrounded at any position. When the source is the ceiling, the same function can be obtained even if the apparatus is installed upside down.

In the embodiment of the lateral direction and the bending,
For example, the technology disclosed in Japanese Patent Publication No. 6-70512 can be applied. That is, as shown in FIG. 4, a spiral wall 81 is provided in the vicinity of the processing object 8, and an air curtain 83 is formed by an air blowing pipe 82 provided at an upper end thereof to form an artificial tornado 84 in the lateral direction. generate. The inner tube 85 provided at both ends of the artificial tornado sucks the core portion, and the outer tube 86 sucks the swirling portion around the core portion.

[0022]

As described above, the dust collecting apparatus of the present invention has an exhaust duct configured as a double pipe, so that efficient dust collection can be performed and the processing after dust collection is easy. There is an effect that an economical processing apparatus can be used.

[Brief description of the drawings]

FIG. 1 is an explanatory view of a dust collector according to a first embodiment of the present invention.

FIG. 2 is an explanatory view of a double pipe portion according to the first embodiment.

FIG. 3 is an explanatory diagram of Embodiment 2.

FIG. 4 is an explanatory diagram of a third embodiment.

Claims (4)

(57) [Claims] 1. A dust collecting apparatus for forming an air curtain in the vicinity of a source of an object to be treated such as dust to generate an artificial tornado and recovering the object to be treated such as dust, comprising: A dust collector comprising: an outer tube for sucking a vortex portion; and an inner tube for sucking a core portion. 2. Around a source to be treated such as dust,
Surrounded by an air curtain to generate an artificial tornado,
In a dust collector that collects objects to be treated, such as dust, a blocking plate is placed at a position facing the source, and the blocking plate is located outside the exhaust duct that sucks the swirl around the artificial tornado core. A dust collector, characterized in that an inlet of a pipe and an inlet of an inner pipe which is smaller in diameter than an inner diameter of an outer pipe and which sucks a core portion are opened. 3. An air curtain is formed by arranging a plurality of columns around a source to be treated such as dust, and blowing compressed air in a predetermined direction from a blowing hole opened in the columns. In a dust collector that generates an artificial tornado by surrounding the source with an air curtain and collects processing targets such as dust, a blocking plate is placed at a position facing the source, and an artificial The inlet of the outer pipe of the exhaust duct that sucks the vortex around the core of the tornado, and the inlet of the inner pipe that has a smaller diameter than the inner diameter of the outer pipe and that sucks the core are open. A dust collector, characterized in that: 4. An air curtain is formed by arranging a plurality of columns around a source to be treated such as dust, and blowing compressed air in a predetermined direction from a blowing hole opened in the columns. In a dust collector that generates an artificial tornado by surrounding the source with an air curtain and collects the processing target such as dust, a blocking plate is placed at a position facing the source, and an artificial Open the inlet of the outer pipe of the exhaust duct that sucks the vortex part around the core of the tornado, and the inlet of the inner pipe that is smaller than the inner diameter of the outer pipe and sucks the core. And a fume port opened in the column connected by an air passage.