JPH0143142Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention is designed to remove excess paint mist and dust from air containing excess paint mist and dust generated during painting work in a painting booth. (including paint mist. It is useful as an air pollution prevention device for various industries that generate dust. Specifically, a water tank with an open top is provided at the bottom of the dust generation chamber, and a cleaning tank is installed above the water tank near the side. A narrow gap is formed between the lower edge of the side plate of the cleaning chamber facing the inside of the dust generation chamber and the control water level in the water tank, and the upper part of the cleaning chamber is An exhaust fan is provided that sucks dust-containing air into the cleaning chamber at high speed along the water surface and through the narrow gap along with the water near the water surface near the gap, and the cleaning chamber includes a A device that removes dust from the dust-containing air by colliding and mixing the dust-containing air sucked through the dust-containing air with water drawn into the cleaning chamber and/or cleaning water separately supplied into the cleaning chamber. The present invention relates to a dust removal device such as a no-pump type or a spray cleaning type equipped with the following.

In the conventional dust removal device having the above configuration, the high-speed dust-containing air flow sucked into the cleaning chamber through the gap comes into contact with the water surface, thereby narrowing the multiphase flow of separated water and dust-containing air. Movement through gaps, violent contact of the dust-containing air and water sucked into the cleaning chamber with the direction changing plate installed in the cleaning chamber, and furthermore, collision or contact between the air in the cleaning chamber and the eliminator or cleaning water, etc. This generates loud noise with a relatively high frequency, which leaks through the narrow gap into the dust generation room, that is, the work room.
It had the disadvantage of significantly deteriorating the environment for workers and the surrounding environment.

The present invention solves the above-mentioned conventional drawbacks.
The purpose is to provide a dust removal device with less noise and a good working environment.

In order to achieve the above object, the dust removal device according to the present invention includes a sound absorbing device installed in a cover that is not completely closed at the bottom, at the lower end of the side plate of the cleaning chamber, at the upper side of the entrance of the narrow gap. It has a characteristic structure in that it is equipped with a muffler that stores and holds materials, which eliminates relatively high frequency noise energy that is generated due to the reasons mentioned above and leaks into the dust generation chamber. Since the sound can be absorbed and attenuated by the sound absorbing material of the muffler provided at the entrance of the narrow gap,
It has the effect of suppressing the deterioration of the work environment and surrounding environment due to noise as much as possible, and allows the desired dust removal work to be carried out in a good environment.Furthermore, the conventional equipment can be used as is, and only a silencer is added. It is extremely easy to implement.

Embodiments of the present invention will be described below in detail based on the drawings. In FIG.
Overhead conveyor 17 that suspends and conveys
A grating floor 18 is provided at the bottom of the grating floor 18, and the workpiece A to be coated A, which is suspended and conveyed, is spray coated from the side.
2 is a water tank installed under the grating floor 18 of the painting booth 1 with its top open. Reference numeral 3 denotes a cleaning chamber installed above one side of the water tank 2, and within this cleaning chamber 3, eliminators 9 for separating water droplets contained in the air are arranged in multiple stages vertically and vertically. Side plates 3 with adjacent ones facing each other
A, 3B protrudes from the inner surface toward the center of the room in an inclined posture, and among the opposing side plates 3A, 3B, the side plate 3A closer to the center of the aquarium 2
The lower end edge 3a is formed in a sawtooth shape, and a narrow gap 4 is formed between this sawtooth lower end edge 3a and the control water surface WL in the water tank 2. A fan 5 is installed at the upper end of the cleaning chamber 3 to draw the dust-laden air generated in the booth 1 along the water surface WL and into the cleaning chamber 3 through the narrow gap 4 as a high-speed flow. is provided, and the water surface is stripped off by the high-speed flow of the fan 5, and the droplets are entrained into the cleaning chamber 3 through the gap 4. Further, at the lower end of the cleaning chamber 3 on the side where the narrow gap 4 is present, a spiral shape is formed to cause the dust-containing air and splashed water sucked through the gap 4 to move in a circular motion and apply centrifugal force to them. A flow direction conversion plate 6 is provided, and a water collection plate 19 having a downward slope in the opposite direction to the side where the gap 4 is present is connected to the end of the flow direction conversion plate 6 inside the cleaning chamber 3. A water channel 7 is provided at the lower end of the water collecting plate 19 to return the separated dust-containing water to the bottom of the water tank 2 so as to be thrown out of the flow by the centrifugal force. .

In the no-pump type dust removal device having the above configuration, a second
As clearly shown in Figures 3 and 3, a sound absorbing material 8B such as glass wool is housed in a cover 8A that is approximately right triangular in side view and opens downward, and this is stretched over the downward opening of the cover 8A. A silencer 8 is fixedly supported by a perforated plate 8C made of metal or the like.

Other examples will be listed below.

The one shown in FIGS. 4 and 5 is a modified example of the silencer 8, in which the cover 8A is configured to have a substantially rectangular shape when viewed from the side, and a plurality of cover 8A are fixedly protruded in a horizontal position from the side plate 3A. The book is fixedly supported in an inclined position via a book stay 11.

The one shown in FIG. 6 has a water-permeable filler 12 fixedly held in the cleaning chamber 3, and has a cleaning water spray nozzle 10 facing the upper part of the cleaning chamber 3, so that it has a spray cleaning type structure. An overflow groove 13 is provided at the upper end of the side plate 3A of the cleaning chamber 3, and water flows down from the overflow groove 13 along the outer surface of the side plate 3A to form a water curtain (water film), thereby preventing mist from reaching the outer surface of the side plate 3A. A so-called water curtain type cleaning structure is added to prevent adhesion and staining.

7 and 8 show the structure and mounting structure of the silencer 8 in the dust removal device of the type shown in FIG.
A gap 14 for forming a water curtain is provided between the side plate 3A and the side plate 3A.

The structure for attaching the muffler 8 to the side plate 3A is not limited to the one shown in the drawings, and may be easily removable without being fixed as long as the muffler 8 does not fall off.

[Brief explanation of drawings]

The drawings show an embodiment of the dust removal device according to the present invention, and FIG. 1 is a partially cutaway side view of the entire device, and FIG.
The figure is an enlarged vertical sectional side view of the main part, and Figure 3 is Figure 2-
4 to 8 show another embodiment, FIG. 4, FIG. 7, and FIG. 8 are enlarged longitudinal sectional views of main parts, and FIG. FIG. 6 is a partially cutaway side view of the entire device. 1... Dust generation chamber, 2... Water tank, 3... Washing room, 4... Narrow gap, 5... Fan, 6... Flow direction conversion plate, 7... Water channel, 8... Silencer, 9... …
Eliminator, 10...Water spray nozzle.

Claims (1)

[Scope of Claim for Utility Model Registration] A water tank 2 with an open top is provided at the bottom of the dust generation chamber 1, and a cleaning chamber 3 is provided upright above the water tank 2 near the side. A narrow gap 4 is formed between the lower edge of the side plate 3A facing inward and the control water surface W in the water tank 2. 4 Water near the water surface or/
An exhaust fan 5 is connected to draw the water flowing down the surface of the side plate 3A facing the interior of the chamber 1 into the cleaning chamber 3 through the narrow gap 4 at high speed. , the dust-containing air sucked through the narrow gap 4 is collision-mixed with water sucked into the cleaning chamber 3 together with the dust-containing air and/or cleaning water separately supplied into the cleaning chamber 3. In a dust removal device equipped with a device for cleaning and removing dust from dust-containing air, the lower end of the side plate 3A of the cleaning chamber 3 is located above the entrance chamber 1 side of the narrow gap 4 so that the lower part is not completely closed. Uncovered cover 1
Silencer 8 in which sound absorbing material 8B is housed and held within 8A
A dust removal device equipped with The cleaning chamber 3 includes a direction changing plate 6 that applies centrifugal force to the dust-containing air and water sucked into the cleaning chamber 3 from the narrow gap 4 between the lower end of the side plate 3A and the water surface.
The dust removal device according to claim 1, which is a utility model registration device, further comprising a water channel 7 for returning dust-containing water to the bottom of the water tank 2. The dust removal device according to claim 1, wherein the cleaning chamber 3 is provided with a water spray nozzle 10 therein. The dust removal device according to any one of claims 1 to 3, wherein the dust generating room 1 is a painting room.