JP3122519U - Dust separator and dust separator using the dust separator - Google Patents

Abstract

[PROBLEMS] To connect to a pre-stage of a dust collector such as an electrostatic precipitator to cause a fume dust (spark dust), other oil droplets, metal dust or general dust ( Provided is a dust separation apparatus capable of separating and collecting dust).
In a dust separator 10 which is connected to a suction port 2 of a dust collector such as an electric dust collector and separates and collects dust mixed in the contaminated gas from a contaminated gas such as fumes generated during welding, the dust separation is performed. The container includes an inlet 16 into which a contaminated gas such as fume flows, a collision plate 12 that collides with the contaminated gas flowing in from the inlet and changes the flow path, and a swirl that imparts a swirling motion to the contaminated gas that has collided with the collision plate. The gas formed on the plate 13, the dust separating plate 14 arranged along the swirl plate, and the swirling center line of the polluting gas that swirls, and at least one side substantially perpendicular to the flow direction of the inflowing pollutant gas The dust separator is provided with a discharge port 17.
[Selection] Figure 1

Description

  The present invention is connected to the front stage of a dust collector such as an electrostatic precipitator, and fume dust (spark dust) that causes a fire from dusty gas, other oil droplets, metal powder, or general dust (dust) The present invention also relates to a dust separation apparatus capable of separating and collecting the same).

  A pre-dust separator (pre-dust box) that can be connected to the previous stage of an electrostatic precipitator, etc. to separate and collect spark dust and the like to prevent a fire of the precipitator is proposed in Patent Document 1 Has been.

JP-A-10-235123

  This pre-dust separator is provided with means for advancing the dust-containing air in a state of swirling in the circumferential direction in the air passage of the suction pipe portion communicating with the inlet of the dust-containing air, and has a mass due to the swirling centrifugal force Mist dust (dust) travels along the outer wall of the air passage so that it can be dropped and collected in the dust box.

  However, since the pre-dust separator employs a mechanism that advances the dust-containing air while rotating it in the circumferential direction, the entire apparatus becomes longer along the air path, and it is difficult to reduce the size of the apparatus. In addition, those using the centrifugal force cannot completely prevent the phenomenon that the sparks dropped and collected on the dust box side soar in the airflow, and there is a problem that the risk of fire remains.

  Therefore, the present invention makes it possible to turn the gas flowing in from the gas inlet into a swirl flow using a swirl plate, and to provide a dust separation plate on the outer periphery of the swirl flow so that the dust can be separated and recovered by the centrifugal force of the swirl flow. By doing so, the above-mentioned drawbacks of the conventional apparatus are solved.

For this reason, the technical solution adopted by the present invention is:
In a dust separator that is connected to a suction port of a dust collector such as an electric dust collector and separates and collects dust mixed in the contaminated gas from a contaminated gas such as fumes generated during welding, the dust separator is a fume An inlet into which contaminated gas flows, a collision plate that collides with the contaminated gas flowing in from the inlet and changes the flow path, a swirl plate that imparts a swirling motion to the contaminated gas that has collided with the collision plate, and A dust separating plate disposed along the swirl plate, and a gas discharge port formed on a swirl center line of the polluting gas that swirls and on at least one side substantially perpendicular to the flow direction of the inflowing pollutant gas; It is provided with the dust separator characterized by the above-mentioned.
The collision plate, the swirl plate, and the dust separation plate are disposed and held between two side plates, and the gas discharge port is formed in at least one of the two side plates. It is a vessel.
Further, the dust separator is characterized in that a flange facing inward is formed on the entire circumference of the gas discharge port.
The dust separator is characterized in that a dust collection box is provided below the dust separation plate.
Moreover, it is a dust separator characterized in that the dust separator described above is housed in a suction box.
In the dust box, a gas suction port and a gas discharge port are formed in the suction box.
The suction box is provided with a maintenance inspection port for maintaining the dust separator.

  According to the dust separation device according to the present invention, dust such as sparks can be reliably separated and collected, and a small and lightweight dust separation device can be provided. Also, the sparks that are dropped and collected on the dust collection box will not rise again. Furthermore, without using a non-combustible filter, any dust such as mist dust or spark dust can be reliably recovered in the middle of the pipeline without reaching the filter filter of the dust collector. Further, since most of the dusts are separated and collected, it is possible to achieve excellent effects such as reducing the burden on the filter filter on the dust collector side and extending its life.

  A dust separation device according to the present invention includes an inflow port through which a contaminated gas such as fume flows, and a collision plate that is disposed opposite to the inflow port and that collides with the contaminated gas flowed from the inflow port to change the flow path. A swirl plate that imparts a swirling motion to the contaminated gas that has collided with the impingement plate, a dust separation plate disposed along the swirl plate, a swirl centerline of the polluting gas that swirls, and the inflow contamination. It has a gas discharge port that is formed on one side of the gas flow direction and at a substantially right angle. This makes it possible to reliably separate and collect dust such as sparks, and is compact and lightweight. A dust separation apparatus can be provided.

Hereinafter, embodiments of a dust separation device according to the present invention will be described in detail with reference to the accompanying drawings.
The dust separator is composed of a dust separator and a suction box that houses the separator. FIG. 1 is a three-side view and a perspective view of the dust separator that houses the dust separator according to the present invention in the suction box. FIG. 2 is a three-side view of the dust separator and a perspective view thereof, and FIG. 3 is a view for explaining the flow of gas in the dust separator.

  In FIG. 1, 1 is a suction box, and this suction box 1 is formed in a box shape by a flat plate material such as a sheet metal, and a gas suction port 2 for sucking a contaminated gas is provided on one side of the box. A gas discharge port 3 for discharging clean gas from which dust has been removed is formed on the other surface on the opposite side. In the present example, the gas suction port 2 and the gas discharge port 3 are formed in a circular shape as shown in the figure, but are not necessarily limited to a circular shape, and may be an elliptical shape, a polygonal shape, or the like. Further, the gas suction port 2 and the gas discharge port 3 are formed with a flange 4 projecting to the outside of the box, and the flange 4 can be used to connect to a duct or the like (not shown). In addition, the suction box 1 is provided with a lid (not shown) for maintenance and inspection of a dust separator, which will be described later, and taking out the collected dust.

  As shown in FIG. 2, the dust separator 10 accommodated in the suction box 1 includes a collision plate 12, a bottom plate 15, a swivel plate 13, and a dust separation plate between two side plates 11 formed of sheet metal or the like. 14 is attached, and the dust separation plate 14 is disposed below the swivel plate 13.

  The collision plate 12 has a shape in which the lower side is fixed to the bottom plate 15 and the upper side is bent inwardly (to the right in FIG. 2), and an inlet 16 into which contaminated gas flows is formed at the top. Yes.

  Further, as shown in the drawing, the swirl plate 13 has a circular shape with the upper portion facing inward, and the contaminated gas collides with the circular portion, so that the gas is swirled. Below the swirl plate 13, a dust separation plate 14 is attached substantially parallel to the swirl plate 13 and with a predetermined gap from the swirl plate 13, and between the dust separation plate 14 and the swirl plate 13. A collection box for taking out the collected dust is arranged below the space.

  In addition, gas flow outlets 17 are formed in the two side plates 11 at positions substantially corresponding to the swirl center line of the swirling flow of the contaminated gas, and these gas flow outlets 17 have a predetermined width toward the inside. A flange 18 having the shape is formed on the entire circumference. By the action of the flange 18, the dust mixed in the gas is prevented from flowing out of the dust separator from the gas outlet 17. In this example, the gas outlet 17 is provided in the two side plates 11, but the gas outlet 17 may be provided only in any one of the side plates 11.

  By storing the dust separator 10 having the above-described configuration in the suction box 1, a dust separator can be configured. At this time, the dust separator 10, the suction box 1, and the like prevent the contaminated gas flowing into the suction box 1 from passing through the side surface of the dust separator 10 from the gas outlet 3 of the suction box 1. It is necessary to attach a shielding plate 19 between them.

The operation of the dust separation apparatus having the above configuration will be described.
In FIG. 3, when suction is performed by appropriately attaching gas suction means (for example, suction means of an electric dust collector) to the gas discharge port 3 side of the suction box 1, this suction force is formed on the two side plates 11 of the dust separator 10. The gas outlet 17 and the gas inlet 16 of the dust separator 10 act on the gas suction port 2 of the suction box 1, and the contaminated gas is sucked from the gas suction port 2 of the suction box 1 by the suction force at this time. It flows into the box 1.

  The contaminated gas flowing into the suction box 1 flows into the dust separator 10 from the gas inlet 16 of the dust separator 10 as shown in FIG. 1 (see white arrow) and FIG. At this time, the contaminated gas collides with the impingement plate 12 and changes its direction to become a relatively thin flow state and hits the swirl plate 13, or the flow above the gas inlet directly hits the swirl plate 13 and turns into the flow. Is given. Due to the action of the swirl plate 13, the contaminated gas flows vigorously along the swirl plate 13 and swirls in the dust separator 10. The swirling flow causes dust mixed in the contaminated gas to flow into the space between the swirling plate 13 and the dust separating plate 14 by centrifugal force, where the dust is separated and collected. Also, the dust that has not been separated and recovered at this time is swirled again in the dust separator 10, is united again with the gas flowing in from the gas inlet 16, and is again turned into a swirling flow by the swirl plate 13. Separated by centrifugal force. In addition, the gas at the center of the swirling flow (gas containing almost no dust due to the action of centrifugal force) is discharged out of the dust separator 10 from the gas outlet 17 formed in the two side plates 11, and further, the suction box 1 Then, it is sent to the subsequent electric dust collector through the gas discharge port 3. In this way, dust is removed by centrifugal force using the swirling flow of gas, and the gas is discharged from the central portion of the swirling flow. By this centrifugal action, it is possible to reliably remove dust including sparks in the polluted gas.

Next, a second embodiment of the dust separator 10 will be described with reference to FIGS.
The dust separator 10 described above is configured such that the contaminated gas flows into the separator from the front, but the second embodiment is configured such that the contaminated gas flows into the separator from the bottom side. The members corresponding to those in the first embodiment are given the same reference numerals. Moreover, the white arrow has shown the flow of gas.

In the first embodiment, the gas suction port and the gas discharge port formed in the suction box are arranged in a straight line, but the attachment angles of the gas suction port and the gas discharge port can be appropriately changed. Further, the curvature of the impingement plate and swirl plate of the dust separator, the shape of the dust separator and the like can be appropriately selected at the time of design.
Although the embodiments according to the present invention have been described above, the present invention can be implemented in any other form without departing from the spirit or main features thereof. For this reason, the above-described embodiment is merely an example in all respects and should not be interpreted in a limited manner.

  The present invention can be used as an air cleaner in a welding site, a factory with a lot of dust, and the like. Further, it can be used as a dust separator in the previous stage such as an electric dust collector.

It is the 3rd page figure and perspective view of the dust separator which accommodated the dust separator which concerns on 1st Example which concerns on this invention in the suction box. It is the 3rd page figure of the dust separator which concerns on 1st Example, and its perspective view. It is explanatory drawing of the flow of the gas in the dust separation apparatus which concerns on 1st Example. It is a 2nd view of the dust separator which concerns on 2nd Example. It is a perspective view explaining the gas flow of the dust separator which concerns on 2nd Example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Suction box 2 Gas suction port 3 Gas discharge port 4 Flange 10 Dust separator 11 Side plate 12 Colliding plate 13 Swivel plate 14 Dust separation plate 15 Bottom plate 16 Inlet 17 Outlet 18 Flange 19 Shielding plate 20 Dust separator

Claims (7)

In the dust separator that separates and collects dust mixed in the contaminated gas from the contaminated gas such as fumes generated at the time of welding cutting by connecting to the suction port of a dust collector such as an electric dust collector, the dust separator is An inlet into which contaminated gas such as fume flows, a collision plate that collides with the contaminated gas flowing in from the inlet and changes the flow path, and a swirl plate that imparts a swirling motion to the contaminated gas that has collided with the collision plate; A dust separation plate disposed along the swirl plate, and a gas discharge port formed on a swirl center line of the polluting gas that swirls and at least one side substantially perpendicular to the flow direction of the inflowing pollutant gas And a dust separator. The collision plate, the swivel plate, and the dust separation plate are disposed and held between two side plates, and the gas discharge port is formed in at least one of the two side plates. The dust separator described. The dust separator according to claim 1, wherein a flange facing inward is formed on the entire circumference of the gas discharge port. The dust separator according to any one of claims 1 to 3, wherein a dust collection box is provided below the dust separation plate. A dust separator comprising the dust separator according to any one of claims 1 to 4 housed in a suction box. 6. The dust separation device according to claim 5, wherein a gas suction port and a gas discharge port are formed in the suction box. The dust separator according to claim 6, wherein a maintenance inspection port for maintaining the dust separator is formed in the suction box.

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