JP3472734B2 - Dust collector and filter replacement method thereof - 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 and a method for replacing a filter attached to the dust collector.

[0002]

2. Description of the Related Art It is known that harmful smoke is contained in smoke emitted from an incinerator in a refuse incinerator, which may adversely affect residents and the environment in the vicinity. Also, the foul odor of smoke emitted from the crematorium is a nuisance to the neighborhood.

Therefore, in recent years, smoke emitted from an incinerator is not directly discharged into the atmosphere but dust and the like contained in the smoke are adsorbed by a filter inside the dust collector through a dust collector called a bag filter. It is released into the atmosphere.

By the way, if the filter is used continuously, it will be clogged with the dust adhering to it, and it is necessary to replace it regularly.

However, since the used filter has dusts containing harmful components, for example, dioxin, when it is attempted to replace it, the worker may come into contact with the dust on the filter surface. Even if you wear gloves or work clothes, contact with harmful dust is not hygienic.

Further, there is a possibility that dust adhering to the surface may drop off from the filter and drift around due to vibration or wind during the work, which may contaminate the surroundings. Furthermore, the worker may inhale dust floating around, which may be unhealthy, which is not preferable.

Further, when a large amount of activated carbon is loaded on the filter for deodorization, activated carbon heated at the time of replacement may react with outside air to spontaneously ignite.

[0008]

SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a dust collecting device that allows a filter to be replaced safely and a safe filter replacing method.

[0009]

A dust collector according to claim 1 of the present invention comprises a filter (5) installed in a dust collection chamber (1),
Pressure loss detecting means (8) (9) for detecting pressure loss in the dust collector, and installed in the vicinity of the filter (5) , the pressure loss detecting means (8) (9)
When it is detected that the pressure loss exceeds a predetermined value,
When the filter (5) is dynamically operated , a coating agent is sprayed on the surface of the filter (5) and the pressure loss is detected by the pressure loss detecting means (8) (9).
% Coating automatically when it is detected
Characterized by comprising a coating agent injection device to stop (6) the injection agent.

According to this, it is possible to spray the coating agent on the filter (5) to fix the dust adhering to the surface of the filter (5) and prevent it from falling off from the filter (5). Therefore, even if the worker touches it, the dust does not adhere to the worker, and the worker does not inhale the scattered dust.

Further, even if a large amount of activated carbon is carried on the filter (5), it is not spontaneously ignited because it is shielded from the surrounding air by the coating agent.

[0012]

Further, the clogging of the filter (5) can be detected from the pressure loss, and if the filter (5) needs to be replaced due to the clogging, the coating agent spraying device (6) is automatically operated.
Can be activated to coat the surface of the filter (5). And when this pressure loss reaches 100%, the coater
When the coating is completed, the coating agent is automatically injected.
You can stop.

The filter replacement method for the dust collector of the present invention is as follows:
Pressure loss inside the dust collector can recover the clogging of the filter (5).
Free incinerator dust collector when it becomes more than a predetermined value is connected stopped, before the dust collecting chamber (1) cools, the dust collecting chamber (1)
Coating the filter surface with a coating agent by spraying the filter (5) coatings on the surface of the inner, pressure loss is 1
Stop spraying the coating agent when it reaches 00%,
After the coating agent has hardened, filter the dust collection chamber (1)
It is characterized in that it is taken out from and replaced.

According to this, since the coating agent is easily dried by the residual heat in the dust collecting chamber and the coating is completed in a short time, the replacement work of the filter (5) can be smoothly performed. Also, the pressure loss inside the dust collector will be 100%.
Sea urchin filter (5) surface coated with coating agent
The filter (5) surface with a coating agent
Can be coated on the surface of the filter (5)
Fall off and pollute the surrounding area, or dust that falls off and floats.
Can be prevented from being inhaled by workers.
It

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described below with reference to preferred embodiments. [Embodiment] FIG. 1 is a diagram showing an outline of a dust collector of this embodiment, (A) is a plan view and (B) is a front view.

The dust collection chamber (1) is a container made of metal, and an inlet pipe (3) for introducing exhaust gas from an incinerator or the like into the dust collection chamber (1) is connected to a lower side portion thereof. Has been done.

Further, a filter section for allowing exhaust gas to pass through the ceiling of the dust collecting chamber (1) to remove dust and bad odor from the exhaust gas.
(2) is supported detachably.

The bottom of the dust collecting chamber (1) is shaped like three funnels arranged side by side, and has an opening at its lower end. This opening is located vertically below each filter (2) and is connected to a recovery device (11) provided below the dust collection chamber (1).

The filtering part (2) has a cylindrical filter (5) made of a filter cloth (woven cloth or non-woven cloth) such as filter glass fiber or polyester, or a filter material, and both lower ends of the filter part (2). It is supported by a core material (5a) inserted in the center of the filter, and its upper end is attached to the main body case of the filtering part (2) connected to the discharge pipe (4). The filter (5) may carry activated carbon for deodorization.

The upper part of each filtering part (2) projects above the outside of the dust collecting chamber (1), and an exhaust pipe (4) for guiding the exhaust gas filtered through the filter (5) to the exhaust part. Are connected.
The discharge pipes (4) connected to the dust collecting chambers (1) are gathered into one and are sucked by a fan or the like (not shown).

The upper end of the core material (5a) is provided with a hanging tool (10) for locking a hook of a crane, etc.
It projects upward from the upper end of (2).

The coating agent injection device (6) is a filter (5)
It is used to spray a coating agent on the surface and is attached to the ceiling of the dust collection chamber (1). The spraying device (6) is arranged around each filter (5) by four (the number is not particularly limited), and sprays the coating agent from four directions toward the adjacent filter (5). be able to. 3 for each coating agent sprayer (6)
Nozzle (the number is not particularly limited)
(6a) are provided so as to line up in the vertical direction, and the filter
The coating material can be sprayed from the upper part to the lower part of (5). Although not shown, the coating agent injection device (6) may rotate around the filter (5).

As the coating agent, various resin liquids such as styrene-based, acrylic-based, rubber-based, urethane-based, epoxy-based, etc., cement liquid, lime liquid, etc. can be used, but they can be dissolved by moisture or rain in the air. Do not take it out and pollute the surroundings,
Those that are insoluble in water once cured are preferred.

A coating material supply pipe (7) for supplying a coating agent used for spraying is connected to the upper portion of the coating agent spraying device (6).

The vibrating device on top of the filter (2) (12) is mounted. The vibrating device (12) has a function of preventing or eliminating clogging of the filter (5) by vibrating the filter (5) to shake off dust and the like adhering to the surface of the filter (5). The fallen dust passes through a collecting device (11) attached to the lower part of the dust collecting chamber (1) and is collected by a predetermined collecting device or a processing device.

An air injecting device is provided in place of the vibrating device (12) to inject air from the inside of the filter (5) toward the outside, blow off dust adhering to the filter (5), and recover the lower device ( You may drop it in 11).

The introduction pipe (3) is provided with an introduction portion pressure gauge (8) for measuring the pressure inside the pipe. Similarly, an exhaust pressure gauge (9) for measuring the pressure inside the discharge pipe (4) is attached.

In use, the inside of the dust collection chamber (1) is depressurized by a fan connected to the discharge pipe (4), and the introduction pipe (3)
The exhaust gas from the incinerator or the like is introduced into the dust collection chamber (1) through the filter and passed through the filter (5) of the filtration unit (2). Dust or odor adheres to or is adsorbed on the filter (5) when passing through the filter (5).

When dust or the like adheres to the filter and becomes clogged, the ventilation is obstructed, the ventilation resistance in the dust collection chamber (1) increases, and the pressure loss increases. This pressure loss is due to the introduction pressure gauge
It can be known from the difference between the measured values of (8) and the discharge part pressure gauge (9).

The clogging can be recovered to some extent if dust is shaken off by the operation of the vibrating device (12), but gradually the clogging cannot be sufficiently recovered, and the pressure loss further increases.
Therefore, the time when the pressure loss exceeds a certain level is judged to be the time to replace the filter (5), and the filter (5) replacement work is started.

When replacing the filter (5), the coating agent spraying device (6) is operated after the operation of the incinerator is stopped, and the coating agent is sprayed on the surface of the filter (5). The coating agent is supplied from the coating agent supply pipe (7) to the coating agent injection device (6).

Even if the incinerator is stopped, the dust collection chamber is still generated due to residual heat.
Since the inside of (1) does not cool immediately, spraying the coating agent before the dust collection chamber (1) cools increases the drying speed of the coating agent due to the heat of the filter (5) and its surroundings, and the coating It can be completed in a short time.

When the filter (5) is completely blocked by the coating, the filter (5) is not vented and the pressure loss is 100%.
%, The injection of the coating agent may be stopped at that time when it is judged that the coating is completed.

The pressure loss may be detected by visually confirming the measured value of the pressure gauge by an operator or the like and starting the filter (5) replacement work. However, an arithmetic unit for obtaining the difference between the pressure gauge and the pressure Alternatively, the pressure loss may be automatically obtained by the pressure loss detecting means (8) and (9) using (or a comparison device), and the coating agent may be automatically sprayed when the pressure loss exceeds a predetermined value.
Further, similarly, the stoppage of the coating agent may be automatically judged by the pressure loss detecting means.

After the coating is completed, the filtration unit (2) is placed in the dust collection chamber.
Take out from (1). Since the filtering part (2) is fixed to the ceiling of the dust collecting chamber (1) by fasteners such as bolts and nuts, the fasteners can be separated by removing the fasteners.

Further, since the filter part (2) is connected to the discharge pipe (4) by the fastener at the flange part (13), the fastener is also removed to connect the filter part (2) and the discharge pipe (4). To separate.

[0038] Then, the filtration unit (2) an upper end portion engaged thereby locked the hanger such as a crane to load block (10) provided, withdrawn from the dust collecting chamber (1) by lifting the filtration unit (2) . Filtration part (2)
If is light, the operator may manually pull it up without using the hanging tool.

Then, the filter (5) is removed from the core material (5a), and a new filter (5) is attached to the core material (5a).

The surface of the used filter (5) is coated with a coating agent, and the dust adhering to the filter does not fall off, so that the surroundings are not contaminated. Further, the worker does not suck the scattered dust. Further, even when a large amount of activated carbon is carried on the filter (5), it is not spontaneously ignited because it is shielded from the surrounding air by the coating agent.

After the replacement of the filter (5), the filter section (2) is mounted on the ceiling of the dust collecting chamber (1) again, and the dust collecting chamber (1) and the discharge pipe (4) are attached.
After that, the filter replacement work is completed and the incinerator can be operated.

[0042]

As described above, according to the present invention, it is possible to provide a dust collector capable of safely replacing a filter and a safe method of replacing a filter.

[Brief description of drawings]

FIG. 1 is a diagram showing an outline of a dust collector according to this embodiment.

[Explanation of symbols]

(1) Dust collection chamber (2) Filter section (3) Introduction pipe (4) Discharge pipe (5) Filter (5a) Core material (6) Coating agent injection device (6a) Injection port (7) Coating agent supply pipe (8) Introductory pressure gauge (9) Exhaust pressure gauge (10) Hoist (11) Recovery device (12) Vibration device

Claims (2)

(57) [Claims] 1. A filter installed in a dust collecting chamber, a pressure loss detecting means for detecting a pressure loss in the dust collecting device, and a filter installed near the filter by the pressure loss detecting means.
Automatically when it is detected that the pressure loss exceeds a predetermined value
It operates to inject a coating agent on the filter surface 且
By the pressure loss detection means, the pressure loss has reached 100%.
Automatically stops spraying the coating agent when
Dust collecting apparatus characterized by comprising a coating agent injection apparatus. 2. The pressure loss in the dust collector clogs the filter.
The dust collector will
Before stopping the attached incinerator and cooling the dust chamber,
Spray the coating agent on the surface of the filter in the dust collection chamber
The surface of the filter is coated with a coating agent, and when the pressure loss reaches 100%, the coating agent is sprayed.
Filter after the coating has been hardened
Dust collection characterized by removing from the dust collection chamber and replacing
How to replace the filter of the device.