JP2003126637A - Cleaner for filter cloth dust collector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate the taking-out work of filter cloth by detoxifying dusts in a dust-containing air in a room to allow a worker to enter the room. SOLUTION: In a dust collector 1 wherein the inside of a casing is separated into upper and lower parts with a thimble plate 3, the lower part functions as the dusty room 4, the upper part functions as a clean room 5, many bottomed filter cloths are hung from the thimble plate 3, and the dust-containing air introduced into the room 4 is filtered with filter cloths 10 and is discharged through the room 5, a cleaning circuit 21 that optionally connects the room 4 to the room 5 is provided; the circuit 21 is provided with a noxious gas removal member 22, a heater 23, and a hot air circulation fan 24; the air in the room 5 is heated through the circuit 21, introduced into the room 4, and circulated to heat the inside of the room 4; and the dust in the room 4 is detoxified with the member 22.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cleaning device for a filter cloth type dust collector, and more particularly, it heats and removes toxic substances contained in the dust in the housing as toxic gas to make the dust harmless and enter the housing. The purpose is to safely replace the filter cloth.

[0002]

2. Description of the Related Art An example of the above dust collector will be described with reference to the drawings. In the figure, the dust collector 1 is divided into a housing 2 into upper and lower parts by a thimble plate 3, a lower part is a dust-containing air chamber 4, and an upper part is a purified air chamber 5. The thimble plate 3 has a large number of filter cloths 1
0 is suspended, and the dust-containing air introduced into the dust-containing air chamber 4 is filtered by the filter cloth 10 and discharged through the purified air chamber 5. The filter cloth is for removing accumulated dust. In order to maintain a predetermined bulge in the filter cloth 10 by providing the reverse injection pipe 12 and the nozzle 13 in each filter cloth 10,
A cage 11 whose upper end is attached to the nozzle 13 is inserted. F is an exhaust fan, 14 is a high pressure air supply pipe for reverse injection, and 15 is a pressure air supply switching valve for each reverse injection pipe. Further, 16 is an upper mounting flange of the filter cloth 10, 17 is a tightening band, and 19 is a centering bolt mounted on the upper flange 18 of the nozzle.

As a result, the dust-containing air introduced into the dust-containing air chamber is filtered by the filter cloth 10, and the dust attached to the filter cloth is automatically fed from the reverse injection pipe 12 when the predetermined negative pressure is reached. Is removed by the reverse injection of. However, due to long-term use, dust adheres to the outer surface of the filter cloth and cannot be removed by the above reverse injection, and it is necessary to remove, clean or replace it. In this case, raise the cage 11 and then put the filter cloth in the dust-containing air chamber 4
The method of dropping it inside is taken out.

[0004]

By the way, in order to drop the filter cloth into the dust-containing air chamber 4 and take out the filter cloth, it is necessary for an operator to enter the dust-containing air chamber 4. However, there is a problem that toxic gas such as dioxin remains in the chamber along with dust and the worker needs to wear protective clothing. In view of the above-mentioned conventional problems, the present invention has an object to make the dust in the dust-containing air chamber 4 harmless, allow an operator to enter, and easily perform the work of taking out the filter cloth.

[0005]

In order to achieve the above object, a cleaning device for a dust collector according to the present invention divides a casing into upper and lower parts by thimble plates, a lower part is a dust-containing air chamber, and an upper part is a purified air chamber. In a dust collector that hangs many bottomed filter cloths on a thimble plate, filters the dust-containing air introduced into the dust-containing air chamber with the filter cloth, and discharges it through the purification air chamber. A cleaning circuit for selectively connecting to the air chamber is provided, and the circuit includes a toxic gas removing member, a heater and a hot air circulation fan, and the air in the purified air chamber is heated through the cleaning circuit to contain dust. It is characterized in that it is introduced into the air chamber and circulated to heat the dust-containing air chamber, and the dust in the dust-containing air chamber is rendered harmless by the toxic gas removing member.

According to the present invention having the above-mentioned structure, a cleaning circuit for connecting the purified air chambers to each other is provided, and the toxic gas removing member, the heater and the hot air circulation fan are provided, and the air in the purified air chamber is supplied. It is introduced into the dust-containing air chamber through the cleaning circuit, the heated air is circulated, and the toxic gas desorbed from the dust is removed by the removing member. By repeating this, the dust in the dust-containing air chamber is rendered harmless, and the worker can enter.

A second aspect of the invention is characterized in that the cleaning circuit is provided with a circuit for selectively introducing an inert gas.

According to the present invention having the above-mentioned structure, the toxic portion in the dust which does not come off can be rendered harmless.

A third aspect of the invention is characterized in that the cleaning circuit is provided with a circuit for selectively introducing a toxic gas removal aid.

The present invention having the above-mentioned structure can improve the efficiency of removing toxic gas, and can also deal with those that cannot be rendered harmless depending on the type of toxic gas.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of a dust collector cleaning apparatus of the present invention will be described below with reference to the drawings. In the figure,
The cleaning device 20 is provided with a cleaning circuit 21 that selectively connects the dust-containing air chamber 4 and the purified air chamber 5, and the circuit 21 includes a toxic gas removing member 22, a heater 23, and a warm air circulation fan 2.
4 and. V1 is an opening / closing valve provided in the combustion gas introduction pipe 30 that connects the incinerator (not shown) and the dust-containing air chamber 4 of the dust collector 1, and V2 is an exhaust pipe 31 that connects the purified air chamber 5 and the exhaust fan F. Open / close valve installed in the V3, V4 cleaning circuit 2
The on-off valves provided at both ends of 1 are respectively shown.

The harmful gas removing member 22 is selected according to the harmful gas to be removed. For example, the gas decomposition catalyst is used for dioxin. In addition, the cleaning circuit 21
An inert gas introducing circuit 25 and a toxic gas removing aid introducing circuit 26 are provided as necessary. V5 and V6 indicate the on-off valves of each circuit.

In the above structure, when the filter cloth 10 is replaced, the operator needs to enter the chamber to take out the filter cloth, but the housing is filled with dust containing dust and toxic substances. Therefore, it is impossible to enter the room as it is, and it is necessary to detoxify the dust in the dust-containing air chamber 4 before entering the room. Therefore, the open / close valve of the combustion gas introduction pipe 30
V1, the on-off valve V2 provided in the exhaust pipe 31, is closed, the on-off valves V3 and V4 of the cleaning circuit 20 are opened, the hot air circulation fan 24 is driven, and the circulating air is heated by the heater 23.

As a result, the dust containing the toxic substance in the dust-containing air chamber 4 is heated, and the released toxic gas is rendered harmless by the toxic gas removing member 22. At this time, the higher the heating temperature, the better the decomposition efficiency. Therefore, there is a case where the filter cloth is heated above the heat resistant temperature to damage the filter cloth, but the filter cloth is discarded and there is no problem. However, in this case, by introducing an inert gas from the inert gas introducing circuit 25, if necessary, it is possible to detoxify the harmful substances that are not normally desorbed from the dust and render them harmless.

Alternatively, by introducing a auxiliary agent from the poisonous gas removing aid agent introducing circuit 26 as required, it is possible to improve the removal efficiency and to deal with substances that cannot be rendered harmless depending on the type of toxic gas.

[0016]

As described above, according to the present invention, a cleaning circuit for selectively connecting the dust-containing air chamber and the purified air chamber is provided, and the circuit includes a toxic gas removing member, a heater and a hot air circulating fan. Since the air in the purified air chamber is heated through the cleaning circuit and introduced into the dust-containing air chamber for circulation, the dust containing the toxic substances in the dust-containing air chamber is heated. Detoxified as poisonous gas and efficiently detoxified by the toxic gas removing member, so that the worker can safely enter the filter cloth into the dust-containing air chamber without wearing special protective clothing, and Since the dust attached to the old filter cloth after the replacement is detoxified, it is not necessary to separately detoxify the filter cloth, and the filter cloth can be easily and simply discarded. Further, according to the second aspect of the present invention, the cleaning circuit is provided with the inert gas selective introduction circuit, so that the toxic portion that does not normally desorb in the dust can be rendered harmless. According to the third aspect of the present invention, the cleaning circuit is provided with the selective introduction circuit of the toxic gas removal aid, so that the toxic gas can be efficiently removed, and the cleaning circuit is harmless depending on the kind of the toxic gas. It is possible to deal with things that cannot be converted.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of an embodiment of a dust collector cleaning device of the present invention.

FIG. 2 is an explanatory view of a procedure for attaching a filter cloth.

[Explanation of symbols]

1 dust collector 3 thimble plate 4 Dust-containing air chamber 5 Purified air chamber 10 filter cloth 20 Cleaning device 21 Cleaning circuit 22 Toxic gas removal member 23 heater 24 Warm air circulation fan

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Takamasa Kijima             4-30 Shioe, Amagasaki-shi, Hyogo Japan Su             Inside Pindle Manufacturing Co., Ltd. F-term (reference) 4D002 AA17 AC10 BA20                 4D058 JA04 JB14 JB24 JB25 MA15                       RA19 UA01 UA11 UA25

Claims (3)

[Claims] 1. A casing is divided into upper and lower parts by a thimble plate, a lower part is a dust-containing air chamber, and an upper part is a purified air chamber. In a dust collector that filters the introduced dust-containing air with a filter cloth and discharges it through the purified air chamber, a cleaning circuit that selectively connects the dust-containing air chamber and the purified air chamber is provided, and the circuit includes a toxic gas. It is equipped with a removing member, a heater and a hot air circulation fan, heats the air in the purified air chamber through a cleaning circuit and introduces it into the dust-containing air chamber, and circulates it to heat the dust-containing air chamber, A cleaning device for a filter cloth type dust collector, wherein dust in an air chamber is rendered harmless by a toxic gas removing member. 2. The cleaning apparatus for a filter cloth type dust collector according to claim 1, wherein the cleaning circuit is provided with a circuit for selectively introducing an inert gas. 3. The cleaning device for a filter cloth type dust collector according to claim 1, wherein the cleaning circuit is provided with a circuit for selectively introducing a toxic gas removal aid.