JP5127262B2 - Dust removal method and dust remover - Google Patents

Description

  The present invention can efficiently and easily remove fine dust such as dust and powder generated at a large work site such as a construction site, a cement manufacturing factory, a mill, etc. without using a large dust collector. The present invention relates to a dust removal method and a dust remover that can be removed.

  Conventionally, various types of wet type vacuum cleaners that capture dust without contacting a surface of water containing sucked dust with the surface of the water are known. By passing water that has become granular or film-like by being struck against the water surface and passing through an S-shaped cross-section with the intake air, the floating dust contained in the intake air is brought into contact with the granular or film-like water to collect the dust. (For example, refer to Patent Document 1). Moreover, there exists what collects dust by rotating a dust collection water tank so that the surface area of the water for dust collection in a dust collection water tank may become large (for example, refer patent document 2).

However, there is a problem in that dust collection efficiency is low because water and suspended dust that have been struck by the intake air against the surface of the water and suspended dust pass through the S-shaped cross-section without being stirred. In addition, even if the surface area of the dust-collecting water is increased, the intake air and the water are not agitated, so that much of the dust contained in the intake air is exhausted without contact with the water, and sufficient dust removal cannot be performed. . In addition, in any case, the dust that comes into contact with the water only adheres to the surface of the water and does not sink, so the water with the dust cannot attach new dust, and the amount of dust that is trapped is extremely small. There was a problem that it was difficult to handle.
Japanese Patent Laid-Open No. 5-130956 Japanese Patent Laid-Open No. 9-234174

  An object of the present invention is to provide a dust removal method and a dust remover capable of obtaining a high dust removal efficiency and treating a large amount of dust.

The present invention generates dust -containing and liquid-containing airflow by sucking dust from the outside by negative pressure action using the airflow flowing from the intake port toward the exhaust port and supplying atomized liquid particles into the airflow, A dust removing method for separating dust-containing liquid and gas after the dust in the dust-containing / liquid-containing airflow is trapped by the liquid in the dust trapping part, provided at the center of the bottomless cylindrical chamber of the dust trapping part The stirring fan forms a stirring flow of dust-containing / liquid-containing airflow in the cylindrical chamber to capture the dust with liquid particles, and blows the dust-containing / liquid-containing airflow onto the liquid film generation wall of the cylindrical chamber to A dust removal method that forms a liquid film, traps the dust contained in the liquid film containing the dust, and drops the liquid containing dust from the liquid film on the liquid film generation wall, and flows from the inlet to the exhaust. Airflow generation mechanism that sucks dust by negative pressure action using airflow, and atomization A dust trapping mechanism that supplies liquid particles into an air stream to generate a dust-containing / liquid-containing air flow and traps the dust in the dust-containing / liquid-containing air flow, and a gas-liquid separation that separates the dust-containing liquid from the gas A dust chamber provided with a mechanism, wherein the dust trapping portion of the dust trapping mechanism is provided with a liquid film generation wall for generating a liquid film and has a bottomless cylindrical chamber so that the dust-containing liquid can fall from the liquid film; It comprises a stirring fan at the center of the cylindrical chamber for stirring the dust-containing / liquid-containing air flow in the cylindrical chamber and blowing a dust-containing / liquid-containing air flow onto the liquid film generating wall inside the cylindrical chamber to generate a liquid film that traps dust. a dust-collecting machine.

The present invention sucks dust from the outside by a negative pressure action using the airflow flowing from the inlet port to the exhaust port by the airflow generation mechanism, supplies liquid as a dust trapping medium in the airflow, and forms a stirring airflow By introducing a dust-containing / liquid-containing air flow containing atomized liquid particles and dust into the dust trapping part (cylindrical chamber) of the dust trapping mechanism to be dispersed, and dispersing the liquid particles having an increased surface area by the stirring air flow A large amount of dust can adhere to the liquid particle surface.

  In addition, the liquid that has captured the dust in the airflow flows into the gas-liquid separation mechanism, and the liquid containing dust is separated from the airflow toward the exhaust port by the gas-liquid separation mechanism. And dust do not flow in, and dust can be prevented from adhering and accumulating on the suction fan of the airflow generation mechanism, reducing the suction force and increasing the load on the suction fan due to the adhering and accumulating dust and increasing the power consumption. There is nothing. Since only clean gas is exhausted from the exhaust port in this way, dust and dust generated in large quantities at construction sites, sentiment manufacturing plants, flour mills, etc. are accurately removed, and only clean air is exhausted. be able to.

In addition, since no liquid is contained in the exhaust, it can be used in buildings and interiors where interiors are finished. Further, since dust is removed with a liquid such as water without using a filter, the structure is simple and difficult to break down, and no replacement parts such as a filter are required, and the running cost can be greatly reduced. In addition, since there is no increase in ventilation resistance due to clogging of the filter, stable dust removal can always be performed, and there is no increase in power consumption due to increase in ventilation resistance.

Furthermore, a liquid film generation wall is formed on the inner surface of the dust trapping portion (cylindrical chamber) , and a liquid film is generated on the inner surface of the dust trapping portion by the liquid sprayed on the liquid film generation wall by the stirring flow, whereby liquid particles are obtained by stirring and mixing. Dust that was not captured by the liquid can be captured by colliding with the liquid film, and countless liquid particles can collide with the liquid film generation wall where the liquid film is generated and scatter to form a mist-like liquid curtain. Therefore, the dust is captured by the mist-like liquid screen, so that the dust removal rate can be further improved.

  In addition, the liquid introduced into the dust trapping section becomes mist-like and increases the surface area by atomizing the liquid based on the mist spraying principle of sucking the liquid by the negative pressure action of the airflow and supplying it into the airflow. Therefore, the dust in the airflow is captured more effectively.

In addition, when the gas-liquid separation mechanism is a rotary separator, the gas-liquid separation function does not deteriorate even when continuously used for a long time, and an increase in ventilation resistance can be prevented, so that efficient separation can be achieved. Moreover, since the gas-liquid separation mechanism is a three-dimensional network structure, the dust-containing liquid can be separated from the airflow without using electric power, so that power consumption can be suppressed. Furthermore, the gas-liquid separation mechanism is a combination of a rotating separator and a three-dimensional network structure, so that the dust-containing liquid contained in the airflow is reduced by the three-dimensional network structure, and then the gas-liquid separation is performed by the rotating separator. By performing this, gas-liquid separation can be effectively performed.

Next, a first embodiment of the dust remover of the present invention will be described in detail with reference to FIG.
The dust remover 1 shown in FIG. 1 is provided with an intake port 2a and a dust removal mechanism 2 provided with an exhaust port 2b for exhausting only clean gas from which dust-containing liquid is separated, and a suction port 3a and an intake port. that Do from the 2a and dust separation unit 3 which communicates with.

  The dust removing mechanism 2 is an airflow generating mechanism 21 that generates a unidirectional airflow from the intake port 2a to the exhaust port 2b, and a dust-containing airflow and a dust trapping medium that are sucked by generating a stirring airflow in the dust trapping unit. The liquid-containing airflow is stirred and mixed to trap dust, and a liquid film is generated on the liquid film generation wall formed on the inner peripheral surface of the dust trapping portion by the stirring airflow, and the dust-containing airflow is blown onto the liquid film to generate dust. And a gas-liquid separation mechanism 23 for separating the dust-containing liquid from the airflow.

The dust separation unit 3 sucks dust from the outside through the suction port 3a on the upper side by the negative pressure action of the air flow generated by the dust removal mechanism unit 2, and also removes the sucked dust-containing air flow of the dust removal separation unit 3 By spraying on the outer peripheral surface of the container 40 as the collision plate 3b , heavy dust collides with the outer peripheral surface , loses energy and falls to the bottom of the dust separation unit 3, and light dust rides on the air current and moves to the dust removing mechanism unit 2. It is made to go to the inlet 2a. By doing so, it is possible to prevent the dust removal mechanism portion 2 from being damaged by heavy dusts or the like and the intake port 2a from being blocked. Needless to say, the dust separation unit 3 may be separated from the dust remover 1 and connected by a pipe or the like.

  The airflow generation mechanism 21 of the dust removal mechanism section 2 includes a motor 21a and a suction fan 21b. The suction fan 21b is covered with a cover 21d and sucks air in the dust removal mechanism section 2 through the communication port 21c. At the same time, an air flow is generated to exhaust air from the exhaust port 2b through the exhaust cylinder 21e formed in the cover 21d.

Dust removing mechanism section 2 of the dust catching mechanism 22 is intended to be housed in the container 40, a reservoir 41 obtained by storing the liquid body in the vessel 40, liquid as dust trapping medium supplied to the air stream dust capturing part for capturing by the dust adhered efficiently to the liquid surface of the particles by dispersion in a stream with increasing by Ri table area to be introduced into and aspirated atomized small amounts stirred flow by a principle of spray 43.

Moreover, the dust capturing part 43 causes the bottom center through the inlet pipe 42a and the communication that is connected to air intake port 2a in the dust separating unit 3, a cylindrical chamber which is formed a communication hole 43a following the gas-liquid separation mechanism 23 at the bottom The stirring fan 43b is disposed at the center of the cylindrical chamber, and the central axis of the stirring fan 43b and the central axis of the intake cylinder 42a are made to coincide with each other. For this reason, the dust-containing air flow toward the exhaust port 2b by the rotating stirring fan 43b becomes a swirling stirring flow, and the dust-containing / liquid-containing air flow sent out from the intake cylinder 42a is vigorously stirred and mixed in the cylindrical chamber, so that the liquid particles The surface area is increased and dust is efficiently attached to the surface and captured .

  Furthermore, a liquid film generation wall that traps dust is formed on the inner peripheral surface of the cylindrical chamber, and a liquid film is generated on the liquid film generation wall by the liquid sprayed by the stirring flow of the stirring fan 43b. Dust that is blown against and collides with the liquid film is captured by the liquid film. In addition, the liquid particles collide with the liquid film on the liquid film generation wall and are scattered, so that a liquid screen is generated by the scattered liquid particles in front of the liquid film generation wall, and dust is also captured by the liquid screen. The Rukoto.

When the liquid film becomes thicker and thicker due to the sprayed liquid, the liquid film is blown off from the liquid film generation wall and falls into the liquid storage part 41. The dust mixed liquid which has fallen into the liquid in the reservoir 41 is intended to output suitable Mubehai. Note that the stirring fan 43b is rotated by a single motor 21a coaxially with the suction fan 21b of the airflow generation mechanism 21 described above, thereby reducing the cost.

  The gas-liquid separation mechanism 23 is composed of a rotary separator 23 b, and the gas-liquid separation mechanism 23 is formed in an air flow path between the airflow generation mechanism 21 and the dust trapping portion 43. The rotating separator 23b has a large number of slits formed on the peripheral surface of the cylinder rotated by the motor 21a so that only gas can pass through the rotating separator 23b.

When using such a dust remover 1, as shown in the first embodiment shown in FIG. 1, 2, reservoir and the other end opening of the liquid supply pipe 42b connected to the suction cylinder 42a The dust trapping section is formed by immersing the liquid in the liquid storage section 41 by immersing the liquid in the liquid in the section 41 using the negative pressure action caused by the airflow flowing in the intake cylinder 42a and making it mist by the spraying principle. Since the surface area can be increased by atomizing the liquid before it is made into particles by the stirring fan 43b in 43, the contact rate between the liquid particles and the dust is increased, and the dust can be efficiently captured.

  Further, since the container 40 of the dust removal mechanism unit 2 is a closed system, a liquid supply port 50 for supplying a liquid as a dust trapping medium is provided, and a drain 51 for discharging sludge in the liquid storage unit 41 is provided. Yes. Further, the joint between the dust removal mechanism 2 and the dust separation unit 3 is hermetically locked with a patchon lock or the like via a packing so that the airtightness in the dust separation unit 3 is maintained.

Then, or reduces the liquid in the reservoir 41, the liquid in the liquid storage portion 41 through the liquid supply port 50 when the dirt is severe becomes supernatant liquid interest are no longer available as a dust trapping medium by dust Replenish. When replacing the liquid, the sludge is discharged from the drain 51 and then a new liquid is supplied. Further, the other end opening of the liquid supply pipe 42b immersed in the liquid storage part 41 is separated from the bottom part of the liquid storage part 41 so that only the supernatant liquid is sucked so that the precipitated sludge is not sucked. I am doing so.

The liquid in the liquid body such as a dust trapping medium can be the small amount, it is sufficient 0.0004 volume% to 7.0 volume% in the gas stream. The reason is that if the liquid is less than 0.0004% by volume, the liquid film becomes too thin and the trapping of the dust is insufficient and the dust is not sufficiently removed. Although the efficiency is improved, since the amount of liquid to be sucked increases, energy is taken by sucking the liquid and the number of rotations of the suction fan 21b is also reduced. is there.

Further, in the second embodiment of the dust remover 1 shown in FIG. 3 , the stirring fan 43b of the dust trapping portion 43 is provided in the intake cylinder 42a, thereby reducing the power consumption by reducing the size of the stirring fan 43b. In addition, except that the dust removing mechanism 2 can be downsized, the configuration and the operational effects are the same except for the difference from the first embodiment, and the description thereof will be omitted.

Furthermore, a third embodiment of dust remover 1 shown in FIG. 4, and the gas-liquid separation mechanism 23 and only a three-dimensional network structure 23a, the point with reduced power consumption by rotating the separator 23b and the first embodiment Except for the differences, the same structure and effect are the same, so the same reference numerals are given and the description is omitted.

Furthermore, the fourth embodiment of the dust remover 1 shown in FIG. 5 is such that the dust removal mechanism 2 is attached to the upper part of the dust separation unit 3 and the container 40 is arranged outside the dust separation unit 3. The liquid supply port 50 and the drain 51 of the container 40 are exposed to the outside so that the liquid supply operation and the sludge discharge operation can be performed without separating the dust separation unit 3 from the dust removal mechanism 2 and the dust separation unit. omitted 3 and points to facilitate disposal of pooled dust, that increased the capacity of the dust separating unit 3, the configuration and operational effect, except that differs from the first embodiment will be described because they are the same .

  Needless to say, the liquid as the dust trapping medium may be a mixture of a processing agent such as a surfactant in addition to water to improve the dust trapping efficiency. Further, in each of the above-described embodiments, the gas-liquid separation mechanism 23 uses the rotating separator 23b or the three-dimensional network structure 23a alone, but the rotating separator 23b is used in the subsequent stage and the three-dimensional network structure 23a is arranged in the preceding stage. By doing so, the dust-containing liquid contained in the airflow can be reduced by the preceding three-dimensional network structure, so that efficient gas-liquid separation can be performed. In each of the above-described embodiments, the rotary separator 23b is provided with a slit in the cylindrical body. However, the impeller is formed with a large number of blades whose height is substantially equal to the height of the gas-liquid separation mechanism 23 and whose length is shortened. As a result, the liquid particles with a high specific gravity contained in the airflow are blown in the circumferential direction by a spiral rotating airflow to prevent the inflow, or the liquid particles are struck with a blade to prevent the inflow, and the liquid in the airflow is Of course, they may be separated.

It is sectional drawing which shows the 1st Example of this invention. It is an expanded sectional view of a dust removal mechanism similarly. It is sectional drawing which shows the 2nd Example of this invention. It is sectional drawing which shows the 3rd Example of this invention. It is sectional drawing which shows the 4th Example which arrange | positioned and integrated the dust removal mechanism part of this invention on the dust classification part.

2a Intake port 2b Exhaust port 2 Dust removal mechanism 3 Dust separation unit
21 Airflow generation mechanism
22 Dust capture mechanism
23 Gas-liquid separation mechanism
43b stirring fan

Claims (2)

Dust is sucked from the outside by negative pressure action using the airflow flowing from the intake port to the exhaust port, and atomized liquid particles are supplied into the airflow to generate dust-containing and liquid-containing airflow. A dust removing method for separating the dust-containing liquid and the gas after the dust in the dust-containing / liquid-containing air flow is trapped by the liquid, by a stirring fan provided in the center of the bottomless cylindrical chamber of the dust trapping portion A stirring flow of dust-containing / liquid-containing air flow is formed in the cylindrical chamber to trap the dust with liquid particles, and a liquid film of liquid particles is formed by blowing the dust-containing / liquid-containing air flow to the liquid film generation wall of the cylindrical chamber. A dust removal method, wherein the liquid film captures dust in the dust-containing / liquid-containing airflow and drops the dust-containing liquid from the liquid film on the liquid film generation wall . An airflow generation mechanism that sucks dust by negative pressure using airflow flowing from the intake port to the exhaust port, and atomized liquid particles are supplied into the airflow to generate dust-containing liquid-containing airflow. A dust remover having a dust trapping mechanism that traps dust in a liquid-containing airflow into a liquid and a gas-liquid separation mechanism that separates the dust-containing liquid and gas, wherein the dust trapping portion of the dust trapping mechanism is A cylindrical chamber provided with a liquid film generating wall for generating a film and having a bottom so that the dust-containing liquid can fall from the liquid film, stirring of the dust-containing / liquid-containing air flow in the cylindrical chamber, and a liquid film generating wall on the inner surface of the cylindrical chamber A dust remover characterized by comprising a stirring fan at the center of a cylindrical chamber for generating a liquid film that traps dust by blowing a dust-containing / liquid-containing air flow onto the dust chamber .

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