JPH084700B2 - 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 dust collecting device for removing dust generated in a workplace or the like.

[0002]

2. Description of the Related Art For example, in a work place where large rocks are crushed into small pieces or a work place where gravel or sand is handled, a large amount of dust is generated, and it is a great problem to remove the dust. There is.

Generally, as a dust collector for removing dust generated in a workplace or the like, for example, a bag filter (bag-shaped filter) is provided in a case, and air containing dust is blown by a blowing action of a fan unit. There is a configuration in which the dust is sucked into the case through the duct and also through the mesh of the bag filter, so that the dust is removed by being trapped by the bag filter. At this time, the bag filter is clogged with the captured dust, so the bag filter is vibrated periodically or continuously to prevent the clogging.

[0004]

As described above, the conventional dust collector generally has a structure using a filter such as the bag filter described above. However, such a configuration using a filter requires a configuration for removing the clogging so that the filter is not clogged, so the configuration is complicated, and in order to maintain the dust collection performance. Since the filter needs to be regularly inspected and needs to be replaced, the work is troublesome and the maintenance cost is high.

Therefore, an object of the present invention is to remove dust without using a filter for collecting dust, which has a simple structure, facilitates inspection work, and is economical. To provide a dust collector.

[0006]

In order to achieve the above object, a dust collecting apparatus of the present invention includes a dust collecting chamber having an intake port at one end and an exhaust port at the other end, and dust. A fan device provided to suck air into the dust collection chamber from the intake port and to discharge the air in the dust collection chamber to the outside through the exhaust port, and to eject water in a mist state into the dust collection chamber. The spraying device is provided so as to face the exhaust port in the dust collecting chamber with a predetermined gap, and has a blocking portion at a portion facing the exhaust port, and the outer peripheral portion of the blocking portion has the blocking portion. A partitioning plate having a plurality of cylindrical ventilation holes in an annular arrangement for passing the mist ejected from the spraying device together with air containing dust, and facing each of the ventilation holes on the outer peripheral portion of the exhaust port. It is provided in a ring so that
A collision wall that is made into a muddy state by adhering dust and moisture together with moisture by collision of air containing dust and mist that have passed through each ventilation port, is provided in communication with the dust collection chamber, and the mud in the dust collection chamber and It is configured to have a discharge port for discharging water to the outside.

A valve is provided at the tip of the discharge port so that the discharge port is always closed and the discharge port is opened when the weight of mud and water discharged from the dust collecting chamber exceeds a certain level. It is preferable. Further, it is preferable that a regulating plate is arranged in the dust collecting chamber so as to face each of the above-described ventilation ports with a predetermined gap from the intake port side.

[0008]

When the fan device is driven, the air containing the dust is sucked into the dust collecting chamber from the intake port due to the blowing action of the fan device, and the air is discharged from the partition plate together with the mist ejected by the atomizing device. It will pass through each vent. At this time, since the pressure on the exhaust port side of the dust collecting chamber becomes lower than that on the intake port side with the partition plate as a boundary, the air passes through the vent port at a high speed.

The air passing through each vent at high speed collides with the collision wall, and the dust contained in the air is removed from the air by adhering to the collision wall together with water. Dust that has adhered to the collision wall together with water becomes a muddy state and is sequentially discharged from the discharge port to the outside. Further, the air from which dust has been removed is exhausted to the outside from the exhaust port.

Therefore, according to this, it is possible to remove dust without using a filter which has been conventionally required.

When a valve is provided at the tip of the discharge port, the discharge port is closed by the valve except when discharging mud or water, so wind, dust, etc. enter the dust collecting chamber side from the discharge port. This can be prevented as much as possible.

Further, in the dust collecting chamber, when the regulating plates are provided on the suction port side of the respective ventilation ports, when the air sucked into the dust collecting chamber flows toward the ventilation port, the regulating plates obstruct the air intake port. And the flow path will always bend,
The dust contained in the air has a greater chance of coming into contact with water, and also has a greater chance of colliding with a wall in the dust collecting chamber, so that the dust collecting efficiency is improved.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIGS. First, in FIGS. 1 and 2 showing the overall configuration, a main body case 2, an intermediate case 3, and a fan device 4 are arranged in a line on the upper part of a gantry 1, and the fan device 4 is installed in an inclined state such that the fan device 4 side becomes higher Has been done.

Of these, the body case 2 has a dust collecting chamber 5 inside.
The intake port 6 is formed on the left side in the figure via the tapered portion 2a, and the exhaust port 7 is formed at the center of the right side wall 2b. Intake port 6 and exhaust port 7
Has a circular shape smaller than the diameter of the dust collection chamber 5. The intake port 6 has a duct 9 having a hood 8 at its tip.
Is detachably connected.

The intermediate case 3 has a stepped cylindrical shape having a small diameter portion 3a, a large diameter portion 3b and a taper portion 3c, and the small diameter portion 3a communicates with the exhaust port 7. The right end of the tapered portion 3c communicates with the intake port 10a of the fan case 10 of the fan device 4.

The fan unit 4 is arranged in the fan case 10, the motor 11 and the fan case 10, and the motor 1 is provided.
1 includes a turbo fan (not shown) that is rotationally driven by 1. The air blowing action of the turbo fan sucks air containing dust into the dust collecting chamber 5 through the duct 9 and the inside of the dust collecting chamber 5. The air is sucked into the fan case 10 through the intermediate case 3 and then discharged from the exhaust port 10b to the outside.

The spraying device 12 includes a water storage tank 13 installed at a lower portion of the gantry 1, a main body 14 including a pump for pumping water from the water storage tank 13 through a hose 14a and discharging the water from the main body 14. It is composed of a nozzle 15 that atomizes water supplied through the hose 15a and ejects it into the dust collection chamber 5.

The partition plate 1 is arranged in the dust collecting chamber 5 so as to face the exhaust port 7 with a predetermined gap 16 therebetween.
7 are provided. This partition plate 17 is shown in FIG.
As also shown in FIG. 3, it is composed of two discs 18 and 18 and a plurality of tubular members 19 provided so as to secure a predetermined gap between the two discs 18 and 18. .

In this case, each disk 18 has a diameter of about 7
It has a closed portion 18a at a portion facing the exhaust port 7 and a plurality of circular vent holes 18b having a diameter of about 4 cm in an annular arrangement on the outer peripheral portion of the closed portion 18a. The corresponding vent holes 18b, 18b of the two discs 18, 18 are communicated with each other by the tubular member 19. Vent holes 18b, 18 of these two discs 18, 18
The vent hole 20 is formed by b and the tubular member 19 that connects the vent holes 18b and 18b.

A rectifying cylinder 21 whose outer diameter is set smaller than the inner diameter of the exhaust port 7 is provided at the center of the disc 18 on the side of the exhaust port 7 so as to project to the intermediate portion of the intermediate case 3. There is.

The right side wall 2 of the main body case 2
The inner surface of b is the collision wall 22. This collision wall 2
2 is located on the outer peripheral portion of the exhaust port 7 and has the above-mentioned ventilation ports 2
It has an annular shape that faces 0.

A discharge hole 23 is provided in the lower portion of the main body case 2 at a portion communicating with the gap 16 between the partition plate 17 and the collision wall 22 and also communicates with the front portion of the dust collecting chamber 5. A discharge hole 24 is also provided in the portion, and ducts 25 and 26 are connected to the discharge holes 23 and 24, respectively. The two ducts 25 and 26 are connected so as to join at the lower portion, and this joining portion serves as an outlet 27. As shown in FIG. 4, a valve 28 is provided at the tip of the discharge port 27.
Is rotatably provided via a shaft portion 28a at the upper end. The valve 28 always closes the outlet 27 by its own weight.

Next, the operation of the above configuration will be described. At the time of use, the hood 8 of the duct 9 is set so as to face the dust source A (see FIG. 2) such as a workplace, and in this state, the motor 11 of the fan unit 4 is driven to rotate the turbofan and The main body 13 of the spraying device 12 is driven to eject the mist 15b from the nozzle 15.

Among them, the air containing the dust at the dust source A is sucked into the dust collecting chamber 5 through the duct 9 (see the arrow B in FIG. 1) by the blowing action of the turbo fan, and the air is discharged from the nozzle. With the mist 15b ejected from 15, the air passes through each vent hole 20 of the partition plate 17 (see arrow C in FIG. 1).

At this time, since the central portion of the partition plate 17 is closed and only the vent hole 20 in the outer peripheral portion is opened, the exhaust port 7 side is sucked by the turbo fan with the partition plate 17 as a boundary. While the pressure decreases due to the force, the pressure on the intake port 6 side becomes higher than that, so that air and mist containing dust pass through each vent port 20 at high speed and collide with the collision wall 22.
To collide with. At this time, each vent 20
When passing through, the flow path sharply narrows, and each vent 2
0 has a tubular shape, so that each vent 20 and its
Opportunities of contact between dust and water increase before and after.

Dust contained in the air that has collided with the collision wall 22 is removed from the air by adhering to the collision wall 22 together with water. The dust that has adhered to the collision wall 22 together with the water becomes a mud and is sequentially discharged from the first discharge hole 23 to the duct 25 side.

The air from which the dust has been removed passes through the exhaust port 7 through the inside of the intermediate case 3 and is exhausted to the outside from the exhaust port 10b of the fan case 10 as shown by the arrow D in FIG. At this time, the rectifying cylinder 21 provided on the partition plate 17
Acts to rectify the air flowing from the exhaust port 7 to the intermediate case 3 side.

Of the mist ejected from the nozzle 17 into the dust collection chamber 5, the rest of the mist that has passed through the ventilation port 20 becomes water again, but the water and part of the dust are in the second discharge hole. It is sequentially discharged from 24 to the duct 26 side. The water discharged to the duct 26 side and the mud discharged to the duct 25 side merge at the discharge port 27, and when the weight of the water and the mud becomes a certain amount or more, the valve 28 is opened by the weight and the outside is discharged. Is discharged to. When the water and mud have been drained, the valve 28 closes again. Since the pressure of the dust collection chamber 5 side becomes lower than the external pressure when the fan device 4 is operating, the valve 28 is maintained in the closed state due to the difference in pressure, and the weight of water and mud in the discharge port 27 is maintained. Is released when is above a certain level.

According to the present embodiment as described above, the mist is included in the air containing the dust, and the mist is passed through each of the vent holes 20 of the partition plate 17 at high speed to collide with the collision wall 22. Since it is configured to remove the dust in the form of mud, the dust can be removed without using a filter for collecting dust. Moreover, in this case, each vent 20 is formed into a tubular shape.
Therefore, dust can be removed more efficiently.
It Therefore, there is no need for a structure for removing the clogging of the filter, and the structure can be simplified accordingly.
In addition, since no filter is used, there is no need to inspect or replace the filter on a regular basis, which facilitates inspection work, and is economical because it does not require replacement of parts. .

Further, according to this configuration, unlike a large machine,
Since the structure can be relatively compact, there is also an advantage that the device can be installed in the vicinity of the dust generation source A, which is efficient.

A valve 28 is provided at the tip of the discharge port 27, and since the discharge port 27 is closed by the valve 28 except when discharging mud or water, wind, dust, etc. are discharged from the discharge port. It is possible to prevent as much as possible from entering the dust collection chamber 5 side from 27.

FIG. 5 shows a second embodiment of the present invention, which is different from the above-mentioned first embodiment in the following points.
That is, the partition plate 30 disposed in the dust collection chamber 5
Is composed of a single disk, and a large number of annular ventilation holes 31 are provided on the outer peripheral portion of the partition plate 30. In addition, in the dust collection chamber 5, on the intake port 6 side of the partition plate 30, the intake ports 6 are provided for the respective ventilation ports 31.
The ring-shaped regulating plates 32 are arranged so as to face each other with a predetermined gap from the side.

With such a structure, when the air sucked into the dust collecting chamber 5 flows toward the vent holes 31, there is the restricting plate 32 in front of each vent hole 31 and each vent is provided. Port 31 is from partition plate 30 to control plate 3
Since it projects to the 2 side, as shown by the arrow E, the flow path of the air is always bent, and the chance that the dust contained in the air comes into contact with moisture increases and the wall inside the dust collection chamber 5 and the partition Since the chances of colliding with the plate 30 and the like increase, there is an advantage that the dust collection efficiency improves.

The present invention is not limited to the embodiments described above and shown in the drawings. For example, the collision wall 2
2 may be configured by a separate member without being used as the side wall 2b of the body case 2.

[0035]

As is apparent from the above description, according to the present invention, air containing dust is caused to contain mist, which is passed through each vent of the partitioning plate at high speed to the collision wall. Since the dust is made into a muddy state and removed by collision, the dust can be removed without using a filter for collecting dust. And in this case, each vent
The cylindrical shape makes it possible to remove dust more efficiently.
Can be. Therefore, it is not necessary to provide a configuration for removing the clogging of the filter, and the configuration can be simplified accordingly. Further, since the filter is not used, it is necessary to regularly inspect and replace the filter. In addition, it has an excellent effect that it can be easily inspected and the economy is excellent.

In addition, since the discharge port is always closed at the tip of the discharge port for discharging mud and water from the dust collecting chamber, the weight of the mud and water discharged from the dust collecting chamber exceeds a certain level. By providing a valve for opening the discharge port, the discharge port will be closed by the valve except when discharging mud or water, and it is possible to prevent wind and dust from entering the dust collecting chamber side from the discharge port. It can be prevented as much as possible.

Further, by arranging the regulating plate in the dust collecting chamber so as to face the respective ventilation ports with a predetermined gap from the intake port side, the sucked air in the dust collecting chamber is prevented. Since the dust contained therein has a greater chance of coming into contact with water and more chances of colliding with the wall in the dust collecting chamber, the dust collecting efficiency can be improved.

[Brief description of drawings]

FIG. 1 is a vertical sectional front view showing a first embodiment of the present invention.

FIG. 2 is a perspective view of the entire appearance.

FIG. 3 is a perspective view of a partition plate portion.

FIG. 4 is an enlarged vertical front view of a discharge port portion.

FIG. 5 is a vertical cross-sectional front view of essential parts showing a second embodiment of the present invention.

[Explanation of symbols]

2 is a main body case, 4 is a fan device, 5 is a dust collecting chamber, 6 is an intake port, 7 is an exhaust port, 12 is a spraying device, 15 is a nozzle, 1
6 is a gap, 17 is a partition plate, 20 is a vent, 21
Is a straightening cylinder, 22 is a collision wall, 23 and 24 are discharge holes, 25,
26 is a duct, 27 is an outlet, 28 is a valve, 30 is a partition plate, 31 is a vent, and 32 is a regulating plate.

Claims (3)

[Claims] 1. A dust collection chamber having an intake port at one end and an exhaust port at the other end; and air containing dust is sucked into the dust collection chamber from the intake port and air in the dust collection chamber is removed. A fan device provided so as to be discharged from the exhaust port to the outside, a spraying device for atomizing and ejecting water into the dust collecting chamber, and a state in which a predetermined gap exists between the exhaust port and the dust collecting chamber Are provided so as to face each other, and have a closing portion at a portion facing the exhaust port, and a plurality of mist ejected from the spraying device together with the air containing the dust are passed through the outer peripheral portion of the closing portion. A partitioning plate having a tubular ventilation hole in an annular arrangement, and a circular plate provided on the outer peripheral portion of the exhaust port so as to face each of the ventilation ports, and contains dust and mist that have passed through each ventilation port. The dust collided with water due to the collision of air. A collision wall which deposited was in to mud, the dust collection chamber communicates provided, the dust collecting device formed by and a discharge port for discharging the mud and water of the dust collecting chamber to the outside. 2. A valve is provided at the tip of the discharge port, the valve being closed at all times and opened when the weight of mud and water discharged from the dust collecting chamber exceeds a certain level. The dust collecting apparatus according to claim 1, wherein 3. The regulating plate is arranged in the dust collecting chamber so as to face the respective vent holes with a predetermined gap from the intake port side. Or the dust collector according to 2.