JP-2026074834-A - Dust collector

Abstract

[Challenge] Reduce energy consumption compared to conventional technology. [Solution] The dust collector includes a first fan for passing introduced dust-laden air through a filter and discharging it to the outside, and a second fan for supplying gas to the filter in the opposite direction to the direction of passage of the dust-laden air in order to remove dust adhering to the filter. The second fan operates while the first fan is operating, and when gas is not supplied to the filter, it is driven with less driving force than when gas is supplied. Since the second fan is driven with less driving force when gas is not supplied to the filter than when gas is supplied, energy consumption can be reduced compared to conventional technology in which the filter is driven with the same driving force as when gas is supplied, even when gas is not supplied. [Selection Diagram] Figure 1

Inventors

• 森本 高徳
• 岩坪 聖一

Assignees

• 日本スピンドル製造株式会社

Dates

Publication Date

20260507

Application Date

20241021

Claims (4)

1. A first fan is used to pass the introduced dust-laden air through a filter and discharge it to the outside. A second fan for supplying gas to the filter in the opposite direction to the passage direction of the dust-containing air, for removing dust adhering to the filter, A dust collector equipped with, The second fan operates while the first fan is operating, and when no gas is supplied to the filter, it is driven with a smaller driving force than when gas is supplied. Dust collector.
2. The second fan adjusts its driving force based on the driving force of the first fan. The dust collector according to claim 1.
3. The second fan adjusts its driving force according to the degree to which the dust falls from the filter. The dust collector according to claim 1.
4. Multiple rooms are provided, each equipped with at least one of the aforementioned filters. The gas supply is carried out for each room. The second fan is driven in each room according to the degree to which dust falls easily from the filter provided in that room. The dust collector according to claim 1.

Description

The technology disclosed herein relates to a dust collector. Patent Document 1 discloses a dust collector comprising: a dust collection chamber to which dust-laden air from a furnace is supplied; multiple rooms each provided in the dust collection chamber and equipped with multiple filter cloths; a filtration fan for drawing in dust-laden air so that it is discharged to the outside via the dust collection chamber and each of the filter cloths in each room; and a backwash fan for sequentially supplying air to each room in the opposite direction to the drawing direction in order to remove dust adhering to each of the filter cloths in each room. Japanese Patent Application Publication No. 10-000316 Figure 1 is a schematic diagram of an example of a dust collector 10 according to the first embodiment.Figure 2 is a block diagram of an example of the electrical system of the dust collector 10.Figure 3 is a graph G1 showing an example of the relationship between the rotational speed V1 of the filtration fan motor 46 and the supply speed of dust-containing air.Figure 4 is a graph G2 showing an example of the relationship between the rotational speed V2 of the backwash fan motor 42 and the rotational speed V1 of the filtration fan motor 46.Figure 5 is a graph G3 showing an example of the relationship between the change in rotational speed ΔV2 of the backwash fan motor 42 and the pressure difference (differential pressure) before and after the dust-containing air passes through the filters 16F11 to 16F32.Figure 6 shows an example of the processing performed by each functional unit of the CPU 52 (damper control unit 52A, input unit 52B, motor drive unit 52C, variable processing unit 52D, and determination unit 52E).Figure 7 is a flowchart showing an example of a dust collection program 56P executed by the CPU 52.Figure 8 is a schematic diagram of an example of a dust collector 10 according to the second embodiment. The embodiments of the technology described herein will be described below with reference to the drawings. [First Embodiment] (composition) Figure 1 is a schematic diagram of an example of a dust collector 10 according to the first embodiment. For the sake of explanation, the upper side of Figure 1 will be referred to as "upper (or upward)" and the lower side as "lower (or downward)". As shown in Figure 1, the dust collector 10 comprises a collection chamber 12 and multiple chambers. Dust-laden air from the electric furnace 100 (see also Figure 2) is cooled by a cooling device (not shown) and then introduced into the intake chamber 12 via the intake pipe 11. The intake chamber 12 has an exhaust section (not shown) at its lower part for discharging dust. The electric furnace 100 is not the only option; for example, it could be an incinerator, steelmaking electric furnace, sintering furnace, or crushing equipment installed in a processing facility for industrial waste or household waste, or in an industrial facility such as a steelmaking or ironmaking plant. Each of the multiple chambers is equipped with at least one filter (e.g., a filter cloth). Figure 1 shows three chambers, specifically the first chamber 14R1 to the third chamber 14R3. The first chamber 14R1 is equipped with two filters 16F11 and 16F12. The second chamber 14R2 is equipped with two filters 16F21 and 16F22. The third chamber 14R3 is equipped with two filters 16F31 and 36F12. Note that the number of chambers and the number of filters in each chamber are not limited to these. At the top of the first chamber 14R1, there is a first filtration pipe 18T1 equipped with a first filtration damper (i.e., a flow control valve) 32A1, and a first backwash pipe 24H1 equipped with a first backwash damper 34A1. Above the second chamber 14R2, there is a second filtration pipe 18T2 equipped with a second filtration damper 32A2, and a second backwash pipe 24H2 equipped with a second backwash damper 34A2. Above the third chamber 14R3, there is a third filtration pipe 18T3 equipped with a third filtration damper 32A3, and a third backwash pipe 24H3 equipped with a third backwash damper 34A3. One end of each of the first filtration pipes 18T1 to the third filtration pipes 18T3 is connected to the first chamber 14R1, and the other end is connected to the induction pipe 20. The induction pipe 20 is connected to a filtration fan 44 that passes the dust-laden air introduced into the intake chamber 12 through filters 16F11 to 16F32 in each of the chambers 14R1 to 14R3 and discharges it to the outside via the discharge pipe 22. The filtration fan 44 includes a filtration fan motor 46. The filtration fan 44 is an example of the "first fan" of the technology of this disclosure. One end of each of the first to third backwash pipes 24H1 to 24H3 is connected to the first to third filtration pipes 18T1 to 18T3, respectively, and the other end is connected to backwash pipe 26. Backwash pipe 26 is connected to the air discharge end of the backwash fan 40. The backwash fan 40