JP3184088B2 - Multi-chamber wet dust collector - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-chamber wet dust collector for efficiently collecting fine dust contained in gas with water.

[0002]

2. Description of the Related Art Conventionally, there has been known a wet dust collecting apparatus which collects dust in a gas by spraying water. For example, Japanese Patent Application Laid-Open No. 55-124520 discloses that a pre-stage step of adding water to a high-temperature gas to saturate the same and a post-stage step of contacting the saturated gas with cold water to generate water droplets are arranged in series.
The return water from each step is collected in a common liquid tank, and from that liquid tank, it is supplied to each step again, and the water supplied to the subsequent step is supplied by a heat exchanger or the like. A wet dust collector for hot gas, characterized by being cooled, is disclosed.

Further, Japanese Utility Model Laid-Open No. 6-3429 discloses a zigzag shape in which a plurality of baffle plates extend from a suction port to a discharge port in an apparatus body having a suction port at one end and a discharge port at the other end. And a particle diameter of 10
A spray nozzle for generating a mist composed of fine water particles of about 100 microns and attaching the generated mist to the dust passing through the dust-containing flow passage is provided at an upper part in the apparatus main body. Is disclosed.

[0004] These conventional devices employ a method in which water is sprayed into a gas to bring the gas into contact with water to collect dust in the gas. Even in this method, dust in the gas can be collected. However, for example, since fine dust generated when grinding spices has an odor, if such dust floats in a gas, the odor spreads, causing problems such as smelling clothes. . Therefore, for the collection of dust having such a smell, a very high collection efficiency is desired, but it is not sufficient to simply collect water by spraying water as described above.

[0005]

DISCLOSURE OF THE INVENTION The present invention improves the dust collection efficiency, which cannot always be satisfied by the conventional wet dust collector, and is particularly suitable for collecting dust having odor. The purpose is to provide a room wet type dust collector.

[0006]

SUMMARY OF THE INVENTION The present invention is directed to a wet type dust collector main body provided with a plurality of baffle plates alternately so that gas can sequentially pass from the upper part to the lower part and from the lower part to the upper part, and a baffle plate. A gas supply port provided in the first chamber to be formed and a gas supply pipe connected to the gas supply port, and water is sprayed from above into a chamber other than the first chamber and the last chamber formed by the baffle plate. Nozzle, a gas discharge port provided in the final chamber formed by the baffle plate, a gas discharge pipe connected to the gas discharge port, and a dust discharge port at the bottom of the wet dust collector main body. And a casing formed of a dust discharge pipe and a discharge port provided above the dust discharge port. The casing is formed so as to surround the vicinity of the gas supply port above the gas supply pipe, and a plurality of gas supply pipes in the casing are provided. Water of It is a multi-chamber wet type dust collector and wherein the articulating water supply pipe to the casing provided with a Deana.

[0007]

An embodiment of the present invention will be described with reference to FIG. Reference numeral 1 denotes a multi-chamber wet dust collector. The multi-chamber wet dust collector 1 comprises a wet dust collector main body 2, a gas supply mechanism, a gas discharge mechanism, a water supply mechanism, a water discharge mechanism, and a dust discharge mechanism. I have. This will be specifically described below.

The wet dust collector main body 2 is provided with a plurality of baffle plates 3a for guiding gas from the upper part to the lower part and a plurality of baffle plates 3b for guiding the gas from the lower part to the upper part. The interior of the wet dust collector main body 2 is divided into a plurality of chambers. The gas supplied to the wet dust collector main body 2 sequentially passes through the plurality of chambers in the wet dust collector main body 2 from the upper part to the lower part and from the lower part to the upper part by the baffles 3a and 3b.

First chamber 4 formed by baffle plate 3a
Is provided with a gas supply port 5, and a gas supply pipe 6 is connected to the gas supply port 5. A casing 7 is provided near the gas supply port 5 of the gas supply pipe 6 so as to surround the gas supply pipe 6. A pipe for supplying water to the casing 7 is connected to the casing 7, and the pipe is connected to a drain port to be described later and connected to a drain port of the wet dust collector main body 2 in order to save water. It is preferable to use a circulating water pipe 8 for circulating water collected at the bottom.

A plurality of water outlets 9 are provided in the gas supply pipe 6 in the casing 7 so that water supplied into the casing 7 is jetted into the gas supply pipe 6. It is preferable that the water jet port 9 is perforated so that water is jetted obliquely downward.

Second chamber 1 formed by baffle plate 3b
0 is provided with a nozzle 11 for spraying water from above, and the nozzle 11 is connected to a water supply pipe 12. A valve 13 for adjustment is provided.

The installation of the nozzle 11 is not limited to the second chamber 10,
The nozzle 11 may be installed in one or more of the other chambers except the first chamber 4 and the final chamber 14, but it is more preferable that the gas is brought into contact with the sprayed water when passing from lower to higher. It is preferable from the viewpoint of dust collection efficiency.

The final chamber 1 formed by the baffle plate 3a
4 is provided with a gas discharge port 15 for discharging the gas supplied from the gas supply port 5 from the wet dust collector main body 2, and a gas discharge pipe 16 is connected to the gas discharge port 15. . Then, in order to further increase the collection efficiency of dust in the gas discharged through the gas discharge pipe 16, a dust collector 17 may be provided in the gas discharge pipe 16. A commonly used dust collector 17 is sufficient. Alternatively, the multi-chamber wet dust collector 1 of the present invention may be further installed in the gas discharge pipe 16, whereby higher collection efficiency can be obtained. The gas outlet 15 is
When the final chamber 14 is formed by the baffle 3a, it is provided above the final chamber 14, and when the final chamber 14 is formed by the baffle 3b, it is provided below the final chamber 14.

Next, a dust discharge port 18 for discharging dust A collected and accumulated by water and a dust discharge pipe 19 connected to the dust discharge port 18 are provided in a lower portion of the wet dust collector main body 2. . A valve 20 is installed in the dust discharge pipe 19, and the dust collector main body 2 is opened and closed by opening and closing the valve 20.
Dust A that has accumulated in the lower part of is periodically discharged.

A drain port 21 is provided above the dust discharge port 18 so that water from the gas supply port 5 and the nozzle 11
Water is prevented from accumulating in the wet dust collector body 2 in an unnecessarily large amount. The reason why the water from the gas supply port 5 and the water from the nozzle 11 are stored in the wet dust collector main body 2 is that the dust collected by the water is settled to a lower portion of the wet dust collector main body 2.

The amount of water to be stored is such that the water surface is in contact with the lower portion 3b 'of the baffle plate 3b for directing the gas from lower to higher or the lower portion 3b' of the baffle plate 3b is below the water surface. And an amount capable of maintaining a sufficient gap between the lower surface 3a 'of the baffle plate 3a for directing the gas upward and downward and the water surface to allow the gas to pass therethrough.

The drainage port 21 is provided with a circulating water pipe 8 connected to the casing 7, and the circulating water pipe 8 is provided with a strainer 22 and a pump 23. Thereby, water used for collecting dust can be purified and reused, and water can be saved.

The operation of the multi-chamber wet dust collector 1 is as follows. First, water is supplied to the lower part of the wet dust collector main body 2 in the first stage, and the above-mentioned water amount, that is, the water surface comes into contact with the lower part 3b ′ of the baffle plate 3b for directing the gas from lower to higher. Or the lower part 3 of the baffle plate 3b
It is necessary to maintain an amount such that b ′ is below the water surface and a sufficient gap between the lower surface 3a ′ of the baffle plate 3a and the water surface for directing the gas upward or downward and the water surface. Keep as much as you can. In this case, the supply of water may be performed from the nozzle 11 or a separate water supply port (not shown) may be provided, and there is no particular limitation.

A gas generating pipe 6 connected to a device for generating dust, for example, a mixing device (not shown) for mixing flour, spice powder, and other powders, allows the inside of the mixing device to be produced. The gas in the head space is supplied into the wet dust collector main body 2 from the gas supply port 5 of the wet dust collector main body 2. In this case, the water supplied into the casing 7 is jetted from a plurality of water jets 9 perforated in the gas supply pipe 6 in the casing 7, and accordingly, the gas flowing through the gas supply pipe 6 Is mixed with water in a limited space of the gas supply pipe 6 and supplied to the first chamber in the wet dust collector main body 2. At this stage, most of the dust in the gas is collected by the water. The water spouted from the water outlet 9 accumulates in the lower part of the wet dust collector main body 2 together with the dust, and the dust sinks and accumulates on the lower part of the wet dust collector main body 2 with the passage of time.

A surplus of the water accumulated in the main body 2 of the wet dust collector is discharged from a drain port 21 in order to maintain a predetermined amount, and is purified by a strainer 22. The water is supplied to the casing 7 through the water outlet 8, and is used as water spouted from the plurality of water outlets 9. The circulating water is periodically checked for its turbidity, and if necessary, measures such as replacing the filter in the strainer 22 or discharging the circulating water to newly supply water are taken.

Further, the amount of the dust A deposited on the lower portion of the wet dust collector main body 2 is checked, and if necessary, the dust A is discharged from the dust outlet 18 through a dust discharge pipe 19 to the wet dust collector main body 2. It is discharged outside. It is sufficient to visually check the turbidity of the circulating water and the accumulation of dust. For that purpose, it is desirable that a part of the side surface of the wet dust collector main body 2 is made of a transparent material.

On the other hand, together with the jet water, the wet dust collector main body 2
The gas supplied to the first chamber 4 passes from the upper part to the lower part by the baffle plate 3a, and passes from the lower part to the upper part in the second chamber 10. When the gas passes through the second chamber 10, the nozzle 11 provided on the upper part of the second chamber 10
The dust remaining in the gas is collected by contact with the water sprayed from the air.

The gas passing through each chamber is discharged from the gas exhaust port 15 of the final chamber 14 through the gas discharge pipe 16 to the outside of the wet dust collector main body 2.
Thorough collection of dust and odor of the gas through a dust collector 17 connected to 6.

[0024]

According to the present invention, not only the gas containing dust is brought into contact with the sprayed water but also the gas supply pipe is limited before the gas is supplied to the wet dust collector main body. By actively ejecting water into the gas in the space and mixing the gas and water, dust in the gas can be efficiently collected.

Then, by further bringing the gas into contact with the water sprayed from the nozzle, dust in the gas can be collected, and the dust collection efficiency can be further improved. Therefore, a deodorizing effect can be expected for collecting dust having an odor, such as a spice, and is particularly effective. In addition, by further processing the gas processed in the main body of the wet dust collector with the dust collector, it is possible to thoroughly collect dust by double or triple.

As described above, according to the present invention, since the collection efficiency can be improved, the size of the apparatus can be reduced. As a result, the apparatus is advantageous in terms of cost and can be installed in a narrow place. There is also a merit in the installation place that can be done.

[0027]

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a multi-chamber wet dust collector according to an embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Multi-chamber wet dust collector 2 Wet dust collector main body 3a Baffle plate 3b Baffle plate 4 First chamber 5 Gas supply port 6 Gas supply pipe 9 Water jet port 10 Second chamber 11 Nozzle 14 Final chamber 15 Gas outlet 16 Gas Drain pipe 18 Dust discharge port 19 Dust discharge pipe 20 Drain port

──────────────────────────────────────────────────続 き Continued on the front page (56) References JP-A-54-35169 (JP, A) JP-A-61-75820 (JP, U) JP-A-6-3429 (JP, U) (58) Investigation Field (Int.Cl. ⁷ , DB name) B01D 47/00-51/10 B01D 53/34-53/96

Claims (3)

(57) [Claims] 1. A wet type dust collector body provided with a plurality of baffle plates alternately so that a gas can sequentially pass from the upper part to the lower part and from the lower part to the upper part, and provided in a first chamber formed by the baffle plates. A gas supply port, a gas supply pipe connected to the gas supply port, a nozzle provided for spraying water from above into a chamber other than the first chamber and the last chamber formed by the baffle plate, A gas discharge port provided in a final chamber formed by the plate, a gas discharge pipe connected to the gas discharge port, a dust discharge pipe connected to a dust discharge port at the bottom of the wet dust collector main body, and a dust discharge pipe. A casing is formed so as to surround the upper portion of the gas supply pipe above the gas supply port, and a plurality of water ejection holes are provided in the gas supply pipe in the casing. A multi-chamber wet dust collector characterized by connecting a water supply pipe to a shing. 2. The multi-chamber wet dust collector according to claim 1, wherein the other end of the water supply pipe is connected to a drain port of the main body of the wet dust collector to form a circulating water pipe. 3. The multi-chamber wet dust collector according to claim 1, wherein a dust collector is connected to the gas discharge pipe.