JP2003001038A - Sprinkling dust collector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide sprinkling dust collector which sucks the dust generated in a dust generation region from a suction port of a funnel, spraying water to dust-containing air and separates the dust by the centrifugal force generated in the funnel. SOLUTION: This sprinkling dust collector sucks the dust-containing air from the suction port 9 of the funnel 1 installed in an upper region of the dust generation region 14, sprays the water by a sprinkling nozzle 8 into the funnel 1, recovers the dust-containing water from a drain hole 26 in the lower part of the funnel 1 through a first trough 5 into a tank 4, introduces the cleaned air from an air exit 10 into an air chamber 29 of a drum 2 and exhausts the air outside by a suction fan 12. The funnel 1 is formed in a curved passage 30 constricted toward the lower part from the upper part and when the dust- containing air passes the curved passage 30, the dust is included into the sprinkled water.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sprinkler type dust collecting apparatus for purifying air by collecting dust such as jet matter, paint and harmful substances generated at a painting site or the like.

[0002]

2. Description of the Related Art Conventionally, dry dust collectors and wet dust collectors have been known as devices for purifying air by collecting dust such as coating of organic solvents and harmful fine powder particles. By the way, dust is suspended in the air by being disturbed by the spray,
Although it falls by gravity with the passage of time, the vaporized solvent normally rises in the air.

Conventionally, as a dust collector, it has been put into practical use as Sho 54-1261.
The one disclosed in Japanese Patent Publication No. 79 is known. The dust collector is provided with a blower at the upper part of the machine body, a water tank at the lower part thereof, a partition between the dust suction chamber and the exhaust chamber, and a plurality of baffle plates for the exhaust chamber between the blower and the water tank. The curved plate is arranged so as to form an S-shaped space passage in the water tank.

Further, Japanese Utility Model Publication No. 1-43141 discloses that
A reservoir type dust collector is disclosed. The accumulated water type dust collector has a pipe in which air ejection holes are arranged in a row so that the flow direction of the dust-containing gas and the ejection direction intersect with the accumulated water, and guides are provided above both side surfaces of the pipe and the upper end of the pipe is almost the accumulated water. Another guide is provided above the guide so that the dust surface and the water droplets that come out of the accumulated water are provided so that the surface of the water slides.

Further, in the water collecting type dust collecting device disclosed in Japanese Utility Model Publication No. 6-39772, a lower part of the device body is used as a water collecting tank,
In the space above the device body, a gas passage that becomes the narrowest on the surface of the accumulated water and then bends is formed, and a plurality of upward air ejection holes are provided below the water surface of the narrowest flow passage along the longitudinal direction. The pipes are arranged, and the pipes are provided with vertical pipes that open above the reservoir surface via valves.

[0006]

However, the conventional dust collector is a suction type in which a suction port is provided on the front side or under the legs for the operator, and the dust collecting range is in the range of the air flow direction of powder particles, solvent, etc. However, it is like promoting adhesion to the human body, and it takes a great deal of effort to separate and collect dust from a large amount of contaminated water at present.

[0007]

SUMMARY OF THE INVENTION An object of the present invention is to suck dust-containing air from a suction port of a funnel located above a dust generation region where dust such as paint and dust is generated, and the dust is dust. It is prevented from diffusing from the whole of the generation area and is guided to the local area of the suction port of the funnel to prevent dust from adhering to the human body, etc., and dust from air containing dust is sprayed from the air by inversion disturbance. (EN) Provided is a sprinkler type dust collector which purifies and separates and collects air to purify the water sprinkled in the funnel and circulates the same.

According to the present invention, a funnel having a wide-angle suction port for sucking dust-containing air in an upper region of a dust generation region in which dust such as paint is generated and having an exhaust port in the lower portion, and adjacent to the suction port And a tank for collecting the dust-containing water through a spout nozzle for sprinkling water in the funnel over the entire suction port and a first trough connected to a drain port for discharging the dust-containing water formed on the bottom surface of the funnel. , A drum forming an air chamber communicating with the exhaust port opened on the upper surface of the lower portion, and air provided adjacent to the drum and purified from the dust generation region through the funnel and the drum to the outside Has a suction fan to exhaust to
The funnel is formed in a curved passage narrowed from the upper part to the lower part of the funnel, and the dust-containing air is mixed with the water sprinkled with water when passing through the curved passage. The present invention relates to a sprinkler type dust collector.

The dust-containing air and the water spray passing through the curved passage of the funnel are divided into a water film along the curved surface by the centrifugal force in the funnel along the curved surface at the lower end of the funnel and the funnel of the funnel. It is inverted and disturbed at the terminal end and separated into the dust-containing water and air.

In this water spraying type dust collecting apparatus, an air nozzle for forming an air curtain is provided around the dust generating area.

The dust generation region is a coating region for coating the surface of the object with a spray gun or the like.

The dust-containing water collected at the bottom of the drum is discharged from the second drain port formed on the bottom surface of the drum to the tank through the second gutter.

A filter is provided between the first gutter and the second gutter and the tank, and the dust-containing water is purified by the filter.

The suction fan sucks purified air from an exhaust port formed in the drum and exhausts the purified air through a duct from an exhaust port opening upward.

In this water sprinkling type dust collector, a guide member such as an eave extending toward the suction port of the funnel is provided in a region forming the dust generating region.

The funnel is installed in a state of being placed in the opening portion of the upper surface of the drum.

The water purified by the filter and collected in the tank is circulated and sprayed from the spray nozzle into the funnel.

Since this water sprinkler type dust collector is constructed as described above, the dust-containing air is guided in the dust generation region by forming an air flow in the upper region of the dust generation region, and the suction port of the funnel. Dust is mixed with the air by sucking it in from the funnel and spraying it into the funnel, immersing it in the water film along the wall surface of the funnel and transferring it to the water through the narrow curved passage.
Dust-containing air is agitated in the funnel, and water mixed with dust is drained from the drain port provided at the bottom of the funnel to the filter through the first trough, and then the water purified by the filter is dropped into the tank. On the other hand, in the dust-containing air, when water is sprinkled, the dust is transferred to the water, and the dust is mixed with the bottom curved surface of the funnel, and the air is separated from the dust-containing water. To the inside of the drum, and is sucked by the suction fan and exhausted to the outside.
Also, the water contained in the air flowing into the drum is
From the drainage port at the bottom of the drum, it is sent to the filter through the second gutter, purified and drained to the tank.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a sprinkler type dust collector according to the present invention will be described below with reference to the drawings. FIG. 1 is a schematic explanatory view showing an embodiment of a sprinkler type dust collecting apparatus according to the present invention, FIG. 2 is an exploded view for explaining a main part of the sprinkler type dust collecting apparatus of FIG. 1, and FIG. 3 is a sprinkler type dust collecting apparatus of FIG. An explanatory diagram showing the principle of the dust device,
4 and FIG. 4 are perspective views showing the end region of the funnel in the water sprinkler type dust collector of FIG.

This water sprinkler type dust collector mainly has a wide-angle suction port 9 for sucking air containing dust in an upper region of a dust generation region 14 in which dust such as paint is generated, and an exhaust port 10 in a lower region. The water spouting nozzle 8 that sprinkles water in the funnel 1 over the entire suction port adjacent to the funnel 1 and the suction port 9 that are connected to the drain port 26 that drains the dust-containing water formed on the bottom surface of the funnel 1. (1) A tank (4) for collecting dust-containing water through a gutter (5), a drum (2) forming an air chamber (29) communicating with an exhaust port (10) opened in an upper surface (28) of a lower part of the funnel (1), and a dust provided It has a suction fan 12 for exhausting the purified air from the area 14 through the funnel 1 and the drum 2 to the outside.

In this sprinkler type dust collector, the funnel 1
Is placed so as to cover the upper opening 32 of the drum 2,
At that time, the curved surface 31 of the bottom portion 17 of the funnel 1 is moved to the drum 2
The contact flange 33 is brought into contact with the positioning flange 33 to be positioned and stably set. The water spray nozzle 8 is configured by disposing a number of joint pipes in a water spray pipe 35 supported on the top plate portion of the funnel 1 and pushing the joint pipes into the funnel 1. The funnel 1 is formed in a curved passage 30 narrowed from the upper part to the lower part of the funnel 1 in which the suction port 9 is formed. When the dust-containing air passes through the curved passage 30, the dust-containing air is mixed with the sprinkled water and migrates.
The dust-containing air and the dust-containing water that have passed through the curved passage 30 of the funnel 1 are inverted and disturbed in the funnel 1 along the curved surface 31 of the lower end member 15 of the funnel 1, and separated into dust-containing water and air. The air rises and flows into the drum 2 through the exhaust port 10 on the upper surface, and the dust-containing water descends and is discharged from the drain port 26.

In this sprinkler type dust collecting apparatus, the dust generating area 14 is a coating area for coating the surface of the object 22, which is the object to be coated, with the spray gun 21 or the like. The dust generating area 14 is provided with an air injection port 7 that forms an air curtain 25 around the area. By forming the air curtain 25 in the dust generation region 14,
The generated dust is prevented from being scattered outside the dust generation region 14 and the work environment is prevented from being polluted.

The dust-containing water collected in the bottom portion 18 of the drum 2 is drained to the tank 4 through the second drain port 27 formed in the bottom surface of the drum 2 through the second gutter 6. A filter 3 that is detachably housed in a filter case 34 is provided between the first gutter 5 and the second gutter 6 and the tank 4. The dust-containing water is purified by the filter 3 and drops into the tank 4. The tank 4 has an overflow weir 13 between its insides.
Is provided for storing the water sent from the filter 3 and the water purification unit 2 for collecting the overflow water that has passed over the overflow weir 13.
It is divided into 0 and. The purified water in the water purification unit 20 is
It is used for watering again from the watering nozzle 8.

Further, the suction fan 12 sucks the purified air from the exhaust port 16 of the drum 2 and exhausts it through the duct 24 from the exhaust port 36 opening upward. A guide member 11 such as an eave extending toward the suction port 9 of the funnel 1 is provided in a region forming the dust generation region 14. The water purified by the filter 3 and collected in the tank 4 is circulated and sprayed from the spray nozzle 8 into the funnel 1.

Since this sprinkler type dust collector is constructed as described above, the dust-containing air in the dust generation region 14 is
When the suction fan 12 operates, the auxiliary airflow from the air injection port 7 rides to form an ascending airflow, which is sucked into the funnel 1 from the suction port 9 of the funnel 1 along the guide member 11 such as an eaves and used for painting or the like. Adhesion of dust such as organic powder and organic solvent to the human body is reduced, and the working environment is improved. Since water is sprinkled on the funnel 1 from the sprinkler nozzle 8, the sprinkled water and the dust-containing air pass through the constricted curved passage 30 in the funnel 1 by centrifugal force to separate the dust and water. Along the wall surface of the film, it forms a film and flows down, and at the same time, the air becomes pressurized and is sent downward.
Reaches the bottom 17 of the. At the bottom 17 of the funnel 1, the dust-containing water and air are inverted and disturbed by the bottom curved surface 31 of the funnel 1 to be separated into air and dust-containing water, and the air is exhausted from the exhaust port 10
To the air chamber 29 in the drum 2, and the dust-containing water flows from the drainage port 26 on the bottom surface to the filter 3 through the first gutter 5.

Further, since the air flowing into the air chamber 29 of the drum 2 contains some water, the water passes from the drain port 27 provided on the bottom portion 18 of the drum 2 through the second gutter 6. Flow down to filter 3. The purified air in the air chamber 29 of the drum 2 is sent to the exhaust port 16 by the suction fan 12.
Through the duct 24 and exhausted from the duct 24 to the outside.
On the other hand, in the dust-containing water sent to the filter 3, dust is collected by the filter 3 and purified water is stored in the tank 4.
Run down to. The bag-shaped filter 3 housed in the filter case 34 may be replaced with a new filter 3 when the amount of dust collected exceeds a predetermined amount. Further, the purified water in the tank 4 can be circulated and reused for watering.

[0027]

Since the water sprinkler type dust collector according to the present invention is constructed as described above, it is possible to perform suction suction separation and dust collection and disposal at the same time, and, as in the conventional case, dust air. Is prevented from moving downward and adhering to the human body, etc., and dust floating in the dust generation area is sucked into the funnel by placing it in an ascending air current, and immediately descends to dust-containing air. Exhaust gas formed on the upper surface of the lower part of the funnel is sprayed with water to mix the dust from the dust-containing air into the water and transfer it, and at the same time, the airflow in the funnel is reversed and disturbed to purify the air. While sucking from the mouth to the drum, the dust is dropped with the water from the drain port at the bottom of the funnel, and the dust is collected and collected by the filter.
The purified water is collected in the tank and circulated again to the water spray nozzle. Further, if the dust collected by the filter is disposed of at a predetermined place, the dust will not pollute the surrounding environment.

Further, in this sprinkler type dust collecting apparatus, the dust-containing air is swirled by the curved passage of the funnel so as to be agitated,
Dust in the air can be effectively mixed into the water, there is no need to install a shield plate or baffle plate as in the past, the air resistance is reduced, and the suction fan is small and sufficient. Can be provided. Further, the water used for sprinkling may be a small amount, as long as it is a stirring volume in the funnel or a circulation capacity flowing through the pipe, and the amount of wastewater treated is significantly reduced.

[Brief description of drawings]

FIG. 1 is a schematic explanatory view illustrating an embodiment of a water sprinkling type dust collecting apparatus according to the present invention.

FIG. 2 is an exploded view for explaining a main part of the water sprinkling type dust collecting apparatus of FIG.

FIG. 3 is an explanatory view showing the principle of the sprinkler type dust collector of FIG. 1.

FIG. 4 is a perspective view showing an end region of a funnel in the water sprinkler type dust collector of FIG. 1.

[Explanation of symbols]

1 funnel 2 drums 3 filters 4 tanks 5 first gutter 6 second gutter 7 Air nozzle 8 watering nozzle 9 Suction port 10 exhaust port 11 Guide member (eave) 12 Suction fan 14 Dust generation area 15 End of funnel 16,36 exhaust port 21 spray gun 22 objects 24 exhaust duct 25 air curtain 26 Funnel drainage 27 Drum drain 28 Lower surface of the funnel 29 air chamber 30 curved passage 31 curved surface 32 Drum top opening 35 Sprinkling pipe

Claims (10)

[Claims] 1. A funnel having a wide-angle opening suction port for sucking dust-containing air in an upper region of a dust generation region where dust such as paint is generated and an exhaust port in a lower region, and adjacent to the suction port. A sprinkling nozzle for sprinkling water in the funnel over the entire suction port, a tank for collecting the dust-containing water through a first trough connected to a drain port for discharging the dust-containing water formed on the bottom surface of the funnel, A drum that forms an air chamber that communicates with the exhaust port that opens to the upper surface of the lower part, and air that is provided adjacent to the drum and that has been purified from the dust generation region through the funnel and the drum is exhausted to the outside. A suction fan, the funnel is formed in a curved passage narrowed from the upper portion to the lower portion of the funnel, and the dust-containing air passes through the curved passage when the dust-containing air passes through the curved passage. A sprinkler type dust collecting apparatus, which comprises mixing dust with the sprinkled water. 2. The dust-containing air and the sprinkling water passing through the curved passage of the funnel are a water film along the curved surface due to centrifugal force in the funnel along a curved surface of a lower end of the funnel and the water film. 2. Inversion perturbation at the end of the funnel, which is separated into the dust-containing water and air.
The sprinkler type dust collector described in. 3. The sprinkler-type dust collecting apparatus according to claim 1, wherein the dust generation region is provided with an air injection port which forms an air curtain around the dust generation region. 4. The sprinkler type dust collecting apparatus according to claim 1, wherein the dust generation region is a coating region for coating the surface of an object with a spray gun or the like. 5. The method according to claim 1, wherein the dust-containing water collected at the bottom of the drum is drained to the tank from a second drain port formed on the bottom surface of the drum through a second gutter. The water sprinkling dust collector according to item 1. 6. The sprinkler type dust collecting apparatus according to claim 5, wherein a filter is provided between the first gutter and the second gutter, and the tank, and the dust-containing water is purified by the filter. apparatus. 7. The suction fan according to claim 1, wherein the suction fan sucks purified air from an exhaust port formed in the drum and exhausts the purified air from an exhaust port opening upward through a duct. The water sprinkling dust collector according to item 1. 8. The area forming the dust generation area comprises:
The sprinkler type dust collecting apparatus according to any one of claims 1 to 7, further comprising a guide member such as an eave extending toward the suction port of the funnel. 9. The sprinkler type dust collecting apparatus according to claim 1, wherein the funnel is installed in a state in which the funnel is placed in an opening portion of an upper surface of the drum. 10. The water purified by the filter and collected in the tank is circulated and sprayed from the spray nozzle into the funnel. Water spray dust collector.