JPH0141487Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a dust collector for removing airborne ducts or mist.

Conventionally, various types of dust collectors such as electrostatic precipitators, bag filters, scrubbers, and cyclones have been used to remove dust or mist from gas. They are selected depending on the processing gas conditions, performance, economic efficiency, etc., and when performance is particularly important, electrostatic precipitators and bag filters are often used.

However, in the case of electrostatic precipitators or bag filters, there are the following problems. For example, in the case of a dry electrostatic precipitator that removes dust as dry dust, when the dust adhering to the dust collecting electrode is removed by hammering, a part of the exfoliated dust (the rearmost part) may escape and the performance may deteriorate. It was hot. In addition, in the case of a wet electrostatic precipitator that removes dust and mist in the form of a slurry, when the dust and mist adhering to the dust collection electrode are collected by water spraying, a portion of the dust and mist (the last There was a risk that the parts) might escape and the performance would deteriorate. Furthermore, in the case of bag filters, only dry dust can be removed, and other mist cannot be removed, and there is a risk that the fibrous material may burst when removing dust adhering to the material, resulting in poor durability and lining costs. It's also expensive.

Taking these drawbacks into consideration, conventionally, as shown in Fig. 1, the circulating shape 1 is used as a dust collection electrode, and a voltage is applied between the circulating shape 1 and the discharge electrode 2 to cause corona discharge and charge. A device has been considered that collects particles in the circulating shape material 1, but in this case as well, it is difficult to maintain the long-term performance of the circulating shape material, and there is also the problem that the material cannot be replaced during operation. .

The present invention was developed based on the above points, and its purpose is to provide a highly reliable dust collector that can maintain the long-term performance of the filter material and that allows the filter material to be replaced during operation. The goal is to provide equipment.

That is, the dust collector according to the present invention includes a pair of perforated plates spaced apart in the direction of gas flow;
A filter block formed by forming a filter material into a predetermined shape to collect particles in the gas flow, which is laminated in plural layers in a direction perpendicular to the flow direction of the gas flow between the pair of perforated plates, and the pair of filter blocks The structure includes a filter block moving means for moving the filter block along the perforated plate.

Therefore, it is possible to maintain the performance of the filter material over a long period of time, and even during operation, the filter block can be replaced as needed by the filter block moving means, thereby improving reliability.

An embodiment of the present invention will be described below with reference to FIG. FIG. 2 is a schematic configuration diagram of the dust collector according to this embodiment. In the figure, reference numerals 11 and 12 indicate a pair of screens provided in the gas flow path 13 with a gap between them. A plurality of filter blocks 14 are stacked between the pair of screens 11 and 12. This filter block 14 has a structure in which a dust collecting material such as polypropylene, Teflon, glass fiber, etc. is filled in a square block-shaped hard mesh case. A filter block discharge passage 15 is connected to the lower end between the screens 11 and 12, while a filter block supply passage 16 is connected to the upper end.
A notch device 17, a damper 18, a pusher 19, a lifting device 20, and a damper 21 are inserted in the filter block discharge path 15 in this order from the screen 11, 12 side, and the filter block discharge path 15 is connected to a roller roller 22. It is connected. On the other hand, a damper 23, a notch device 24, and a damper 25 are inserted into the filter block supply path 16 from the screens 11 and 12 side. A discharge electrode 26 for charging particles in the gas is installed at a predetermined distance on the upstream side of the screen 11 in the gas flow direction.

The operation will be explained based on the above configuration. Fine dust in the gas flowing through the gas flow path 13 is removed by the discharge electrode 26.
The screen 11 is charged by corona discharge from
The dust passes through the filter block 14 and is adsorbed by the dust collecting material of the filter block 14 stacked between the screens 11 and 12. The purified gas then passes through the screen 12 and flows through the gas flow path 13.

In this series of steps, the filter blocks 14 are sequentially discharged from below and simultaneously supplied from above. That is, the filter block 14 located at the lowest end is supported by the notch 17, and in this supported state, the damper 18 is first
open. Then, the lifting device 20 is raised to support the filter block 14 from below. Next, Notsuchi 1
7 is released, and the lifting device 20 is lowered. After descending, the damper 18 is closed and the damper 21 is opened. Then, the filter block 14 is pushed onto the roller conveyor 22 by the pusher 19 and sent to a dropper (not shown). Then damper 2
1 is closed. At this time, the notch 17 supports the next filter block 14.

On the other hand, a new filter block 14 is supplied from the filter block supply path 16 one step earlier than the above-mentioned discharge. That is, the damper 23 is opened, the support by the notch 24 is released, and the supported filter block 14 is placed on the lower filter block 14. Then, by lowering the elevating device 20 mentioned above, it is lowered one block. A new filter block 14 is now provided. Then, the damper 23 is closed and the damper 25 is opened, and a new filter block 14 is placed on the damper 23 and supported by the notch 24.

According to the dust collector according to the present embodiment, the filter block 14 accommodates dust collecting material such as polypropylene, Teflon, glass fiber, etc. with a constant porosity in the hard mesh case, and this can be maintained for a long period of time. In addition, the filter block 14 can be supplied and discharged according to the dust collection state during operation.
Filter block 14 between screens 11 and 12
can be maintained in a constant collection state at all times. And filter block 1 of this embodiment
4, the dust can be easily removed. Furthermore, since the filter block 14 can be replaced continuously, the screens 11 and 12 can be replaced by monitoring the filter block 14 discharged at that time.
The state of the filter block 14 can be checked at any time.

As detailed above, the dust collector according to the present invention includes a pair of perforated plates spaced apart from each other in the direction of gas flow, and a direction perpendicular to the flow direction of gas flow between the pair of perforated plates. A filter block is formed by forming a filter material into a predetermined shape into a predetermined shape to collect particles in a gas flow, which are stacked in multiple layers in a direction, and this filter block is
This structure includes filter block moving means for moving the filter block along the pair of perforated plates.

Therefore, it is possible to maintain the performance of the filter material over a long period of time, and even during operation, the filter block can be replaced as needed using the filter block moving means, which improves reliability. be.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram of a conventional dust collector, and FIG. 2 is a diagram showing an embodiment of the present invention. 11, 12... A pair of screens, 13... Gas flow path, 14... Filter block, 17, 24
... Notch device, 18, 21, 23, 25 ... Damper, 19 ... Pusher, 20 ... Lifting device,
22...Roller conveyor.

Claims (1)

[Scope of utility model registration request] 1 provided at intervals in the flow direction of the gas flow
A filter block includes a pair of perforated plates, a filter material formed into a predetermined shape to collect particles in a gas flow, and a plurality of filter materials stacked in a direction perpendicular to the flow direction of the gas flow between the pair of perforated plates. A dust collector comprising a filter block moving means for moving the filter block along the pair of perforated plates.