JP2001327825A - Wet type dust collector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To attain simple structure, low cost, a small number of consumed parts, facility for maintenance and facility for treatment of collected dust in a wet type dust collector. SOLUTION: When a fan 26 is rotated, dust generated on a belt conveyor 1 is sucked from a suction pipe 25 and dust-carrying air is sucked from a dust protective cover 4. Air flowing into a wet pipe 20 from a bent pipe 17 moves in the wet pipe 20 while rotating along a spiral space partitioned by a shape of a spiral vane 30. The air containing dust comes into contact with sewage water containing dust at a bottom part of the wet pipe 20 and further is blended with the sewage water by agitation. In thee processes, the dust in the air is taken in the sewage water and the air is cleaned. Cleaned air is exhausted from an exhaust pipe 40 opened at a bottom surface of the wet pipe 20 and then is introduced into the dust protective cover 4 to purify the air in the dust protective cover 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wet dust collector for collecting dust by damping dust such as dust and rocks with water. More specifically, the present invention relates to a wet dust collector for collecting dust such as dust and rocks generated at a mine, a quarry, a civil engineering work site, a construction / recycling facility, and the like, and moistening and removing the dust with water.

[0002]

2. Description of the Related Art Various types of dust collectors are known and used in principle for purifying air by removing dust as solid particles from gas in the air. For example, a cyclone that collects dust using centrifugal force, a scripter that is a wet dust collector, an electric dust collection type that charges particles by corona discharge and collects it by Coulomb force, a bag filter that uses a filter cloth, and the like are known. .

[0003] In order to collect dust such as dust and rocks generated in mines, quarries, civil engineering work sites, recycling facilities for construction and civil engineering waste, and the like, some of these dust collectors are used. However, if a dust collection device is installed at these sites, it is inevitably a large dust collector in the case of a stationary type due to the nature of a plant. That is, the dust is collected at a location where dust is generated, collected at a predetermined location through a pipe, and treated at one location.

[0004] For this reason, it is desirable that the dust be treated as much as possible at the place where the dust is generated in order to prevent the equipment from becoming large. There has been proposed a dust collector installed at a place where dust is generated based on this concept and dust is collected. For example, Japanese Patent Publication 8-470
No. 0 proposes a type in which a dust collector is installed at a location where dust is generated. In this dust collector, air containing dust is made to contain mist, and the mist is made to collide with a wall at a high speed to remove the dust in a muddy state.

[0005]

However, the post-treatment of the collected dust is troublesome, both in the stationary type and in the case where the dust is processed at the position where the dust is generated. Cleaning and maintenance are troublesome. The present invention has been made under the above-mentioned technical background, and achieves the following objects. An object of the present invention is to provide an inexpensive wet dust collector having a simple structure. Another object of the present invention is to provide a wet dust collector which has few consumable parts and is easy to maintain. Still another object of the present invention is to provide
An object of the present invention is to provide a wet dust collector that can easily treat collected dust.

[0006]

The wet dust collector according to the present invention comprises:
A suction pipe having a dust suction port opened at one end for sucking air containing dust from the dust suction port, and a plurality of suction pipes connected to the other end of the suction pipe to wet the dust with water. Partitioned into space, with a partition wall filled with water at the bottom,
An exhaust port for discharging the dust accumulated and wet on the partition wall and a blower fan for sucking air from the suction pipe.

[0007] The suction pipe is preferably provided with an injection nozzle for injecting water to the sucked air. The injection nozzle may be any as long as it sprays water in the form of a mist or a shower. Preferably, the spray nozzle sprays water having a diameter as small as possible.

It is preferable that the partition has a spiral blade provided with spiral blades and a spiral blade driving means for rotating and driving the spiral blade. Further, the partition may be formed by a plurality of partition plates which partition a space and have a lower part opened. Preferably, in order to generate turbulence in the air, the lower part of the partition plate is formed with irregularities. Further, the blower fan only needs to be capable of exhibiting a function of sucking dust containing dust from the suction pipe, but it is desirable that the fan is disposed in the suction pipe in terms of suction efficiency.

[0009]

[First Embodiment] A first embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a sectional view showing an embodiment in which the wet dust collector of the present invention is applied to a belt conveyor. FIG. 2 is an enlarged sectional view of the dust collector of FIG. The belt conveyor 1 is a well-known transport device including a belt 2, a support roller 3 for supporting the belt 2, a rotation driving unit (not shown), and the like.

When the belt conveyor 1 conveys a conveyed product W discharged from a crusher such as a roll crusher, a vibrating sieve, or the like, dust is generated particularly when the conveyed product W is dry dust, rocks, or the like. . For this purpose, a dustproof cover 4 is arranged above the belt conveyor 1 so as to straddle and cover the belt conveyor 1. The dust cover 4
May be arranged on the entire length or a part of the belt conveyor 1.

An opening 5 which is a through-hole is formed in an upper portion of the dustproof cover 4 downstream of the belt conveyor 1 in the conveying direction. A large diameter portion, which is one end of a conical tube 6 having a taper, is integrally fixed to the opening 5. A flange 7 is formed at the other end of the conical tube 6. The flange 7 is connected and fixed by a bolt to a flange 9 provided at one end of a straight pipe 8 which is a straight pipe having a circular cross section.

A flange 10 at the other end of the straight pipe 8 is connected and fixed to a flange 12 at one end of a curved pipe 11 having an angle of about 90 degrees. The flange 13 at the other end of the curved tube 11
It is connected and fixed to the flange 15 of the blower pipe 14 by bolts. A flange 16 at the other end of the blower tube 14 is connected and fixed to a flange 18 at one end of a curved tube 17 having an angle of about 90 degrees. The flange 19 in contact with the flange 18 has an opening on the side of the wetting tube 20 and is connected and fixed by a bolt to a flange 21 fixed so as to communicate with the opening.

After all, the conical tube 6, the straight tube 8, the curved tube 11, the blower tube 14, and the curved tube 17 constitute a suction tube 25 for sucking air containing dust from the dust cover 4; Dust from inside is sucked together with air. A fan 26 for blowing air is arranged in the blower tube 14. The fan 26 generates wind in the axial direction of the blower tube 14, and is a propeller-type blower including several blades. The center shaft fixed to the fan 26 is rotatably supported by a bearing at the center position of the blower tube 14.

A pulley is fixed to one end of the center shaft of the fan 26, and a belt 27 is stretched around the pulley.
On the other hand, the belt 27 has an electric motor 2 serving as a rotary drive source.
8 is wrapped around a pulley fixed to the output shaft. Therefore, when the electric motor 28 rotates, the fan 26 is rotationally driven via the belt 27 to send air.

An injection nozzle 29 is arranged on the side of the curved pipe 17. The spray nozzle 29 sprays water into the curved pipe 17 in a spray or shower state, and the spray wets and moistens dust in the air in the curved pipe 17. The supply of water to the injection nozzle 29 is performed by opening and closing the valve 24. The dust is taken in by water droplets emitted from the injection nozzle 29 and falls to the bottom of the wetting tube 20.

The wet tube 20 is a cylindrical tube having a cylindrical section, and has an inlet-side opening for taking in dirty air and a discharge tube 40 for discharging purified air. In the discharge pipe 40,
A discharge pipe 41 is provided, and the discharge pipe 41 is connected and fixed by a flange to a connection pipe 42 fixed to the dustproof cover 4. A spiral blade 30 is arranged along the axis of the wetting tube 20 and having a diameter such that it comes into contact with the inner hole of the wetting tube 20.

A drive shaft 31 is provided at the center of the spiral blade 30. Both ends of the drive shaft 31 are connected to the end face 3 of the wet pipe 20.
2 and 33 are rotatably supported by bearings. Drive shaft 3
A sprocket 34 is fixed to one end of the unit 1, and a chain 35 extends around the sprocket 34.

The chain 35 also extends over a sprocket 36 fixed to the output shaft of an electric motor 37 having a built-in speed reducer. Therefore, the electric motor 37 includes the sprocket 36, the chain 35, the sprocket 34, and the drive shaft 3
1 is driven to rotate at a low speed. The spiral blade 30 rotated and driven by the driving of the drive shaft 31 scrapes out the wet dust accumulated at the bottom and gradually discharges the dust from the discharge pipe 40.

When the operation electric motor 37 is started, the fan 26 is rotated, and
The dust generated on the belt conveyor 1 from the suction pipe 25 is sucked from the dust cover 4 into the air containing the dust. Inhalation pipe 2
5 sucks dust generated on the belt conveyor 1 from the dust cover 4 together with air. The dust in the air is
The droplets are taken in by water droplets emitted from the injection nozzle 29 disposed in the tub and fall into the wetting tube 20.

Further, the air that has flowed into the wetting tube 20 moves inside the wetting tube 20 while rotating along a spiral space defined by the shape of the spiral blade 30. At this time, the air containing the dust contacts the wastewater mixed with the dust at the bottom of the wet pipe 20, and is mixed with the wastewater with stirring. In these processes, dust in the air is taken into the sewage, and the air is purified.

The purified air is discharged from the discharge pipe 40 opened at the bottom of the wet pipe 20 and introduced into the dust cover 4 to purify the air in the dust cover 4.

[Second Embodiment] The first embodiment described above.
In this method, the moist dust was forcibly scraped out by the spiral blade 30 and discharged from the discharge pipe 40. FIG. 3 is an example of a wet box 50 without a forced discharge mechanism. The wet box 50 has a hollow inside and is formed in a box shape including a plurality of partition walls 51. A plurality of partition walls 51 are arranged in parallel in the wet box 50 at intervals.

The lower end of the partition wall 51 is regularly formed with irregularities 52 at regular intervals. The inside of the wet box 50 is partitioned by a partition wall 51 to form a plurality of partitioned spaces 53. In the partitioned space 53, the dust-mixed air is retained, so that the probability of dust falling is increased. The unevenness 52 of the partition wall 51 causes turbulence in the flow of air, increases the probability of contact with water at the bottom of the wet box 50, and captures dust in the air.
At the discharge-side end of the wet box 50, a weir 54 is arranged.

The lower part of the weir 54 is provided with an opening 55, from which the dust moistened with water and turned into clay is discharged. The bottom plate 56 of the wet box 50 is inclined in the direction of gravity, so that clay-like dust is easily formed. As described above, the second embodiment has an advantage that it is not necessary to provide a means for forcibly discharging wet dust.

(Other Embodiments) The wet dust is
The forcible discharge is performed by the spiral blade 30 from the wetting tube 20, but the means for forcibly discharging the wet dust is not limited to this. The belt conveyor may be a means such as discharging by jetting air or water.

[0026]

As described above, the wet dust collector of the present invention has a simple structure, is inexpensive, has few consumable parts, is easy to maintain, and can easily perform processing such as returning dust collected to the original state. There are features such as can be.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing Embodiment 1 when a wet dust collector of the present invention is applied to a belt conveyor.

FIG. 2 is a second embodiment of a wet dust collector according to the present invention, and is a cross-sectional view of a wet box.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Belt conveyor 2 ... Belt 4 ... Dustproof cover 14 ... Blower tube 29 ... Injection nozzle 30 ... Spiral blade

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Hiroho Baba 2246, Amakyu, Asahimachi, Takeo-shi, Saga Prefecture Inside Nakayama Iron Works Co., Ltd. (72) Inventor Tomohiro Tachibanakawa 2,246, Asahi-machi, Takeo-shi, Saga Prefecture No. 1 F-term in Nakayama Iron Works, Ltd. (reference) 4D032 AB02 AB08 AC08 BA05 BB01 BB17 BB19 CA10

Claims (5)

[Claims] 1. A suction pipe having a dust suction port opened at one end for sucking air containing dust from a dust suction port, and connected to the other end of the suction pipe to wet the dust with water. A partition wall which is partitioned into a plurality of spaces to fill the bottom with water, a discharge port for discharging the dust deposited and wet on the partition wall, and a blower for sucking air from the suction pipe. Wet dust collector consisting of a fan. 2. The wet dust collector according to claim 1, wherein an injection nozzle for injecting water to the sucked air is disposed in the suction pipe. 3. The wet dust collector according to claim 1, wherein the partition comprises a spiral blade having a spiral blade, and a spiral blade driving means for rotating and driving the spiral blade. A wet dust collector. 4. The wet dust collector according to claim 1, wherein the partition part defines a space and is formed by a plurality of partition plates having a lower part opened. 5. The wet dust collector according to claim 3, wherein the blower fan is disposed in the suction pipe.