KR20130078405A - Metal dust filter using electromagnetic designed by flow analysis and collecting apparatus with the same - Google Patents

Abstract

PURPOSE: A metal dust filter using an electronic stone and a collecting device for a shipyard are provided to effectively absorb dust including metal materials by using an absorption rib installed at a side wall of a casing. CONSTITUTION: A metal dust filter (110) is arranged in a casing (111) including an inlet and an outlet to carry air along with an air blowing direction and includes an absorption rib comprised of electronic stones absorbing metal dust from air. The metal dust filter is installed at an inner wall of the casing to drastically reduce the flux of air. The metal dust filter has a square stick. A dust collecting device comprises a duct providing the floating path of air; an impeller capable of discharging the air by inhaling the air; the metal dust filter; and a sub-filter which secondary filters the air firstly filtered by the metal dust filter installed at a discharging side of the duct.

Description

Technical Field [0001] The present invention relates to a metal dust filter using electromagnets disposed by a flow analysis, and a dust collecting apparatus for the ship,

The present invention relates to a dust collecting device for shipbuilding, and more particularly, it relates to a dust collecting device for shipbuilding, which can effectively collect dust containing metal components even in a closed space of a shipyard, And a dust collecting device for shipbuilding equipped with the metal dust filter.

In general, shipyards are equipped with collectors to remove large amounts of dust generated during welding and painting operations.

The amount of impurities and dust generated during the welding and painting work, which is a major work in the shipyard, is beyond the imagination. Particularly, the dust which can not be removed quickly when working in a closed vessel, It also affects the residential area near the shipyard, leading to legal disputes.

  Therefore, as shown in FIG. 1, a method of forcibly discharging the air and dust inside the workplace using a large-capacity blower 10 is used in order to remove dust generated during welding and painting. However, this method has not helped to improve the worker 's environment because the passage from the almost closed workplace to the outside is narrow and limited and the emission amount is insufficient. In particular, this method not only interferes with the work of the operator, but also adversely affects the dust on the floor of the workplace.

 On the other hand, contrary to the above-mentioned method, there is also used a method of sucking air and dust in the workplace using the blower 10 and discharging it to the outside. However, this method is fundamentally merely a discharge of polluted air and dust to the outside, and part of the contaminated air and dust discharged from the workplace, as shown in FIG. 2 showing the workplace together with the cross section of the ship, There is a common problem that the dust generated in the workplace is left in the atmosphere as it is. It can be seen that both A and B shown in FIG. 2 are the workplace where the worker is working, and even if the contaminated air and dust are discharged from the closed workshop B, they are influenced again by flowing into the worksite A. In addition, about 20 ~ 30% of the polluted air and dust discharged from the workshop B is again sucked into the worksite B, thereby forming a system in which contaminated air and dust are circulated.

Therefore, it has been urgently required to develop an environmentally friendly and highly efficient dust collecting apparatus that can effectively treat contaminated air and dust generated in the workplace, thereby improving the work environment of the worker and preventing air pollution.

Accordingly, it is an object of the present invention to provide a dust collecting device for shipbuilding, and more particularly, to a dust collecting device for shipbuilding which can effectively collect dust containing metal components even in a closed space of a shipyard And a metal dust filter using electromagnets arranged by a flow analysis that is easy to operate and replace and easy to clean, and a dust collecting device for a ship.

In order to accomplish the above object, according to the technical idea of the present invention, there is provided a metal dust filter comprising: a casing having an inlet and an outlet so as to allow air to pass therethrough; And a pair of side walls which are provided on the inner wall of the casing and cross the inner side wall of the casing in the form of a square bar so as to drastically weaken the flow velocity of the air around the installed position, And a plurality of adsorbing ribs arranged alternately along the other side wall and made of an electromagnet for adsorbing metal dust from the air having a weak flow velocity.

Here, the outer surface of the adsorption rib may be further coated with a net-like trapping net to increase the amount of adsorbed metal dust.

In addition, the collecting net may be made of a metallic material which can receive magnetic force of the electromagnet and become magnetic.

In addition, a non-metallic auxiliary collection net, which has a net shape and does not magnetize even when receiving the magnetic force of the electromagnet, is further provided on the outside of the collection net.

Further, the casing may be characterized in that one of the side walls is made of a sliding door.

Further, the casing may be provided with a flange around the inlet and the outlet, respectively, for connection to a duct or a pipe.

According to another aspect of the present invention, there is provided a dust collecting apparatus comprising: a duct for providing an air flow path; An impeller installed in the duct to suck and discharge air; The metal dust filter being connected to the middle of the duct and being sucked by the impeller to mainly adsorb metal dust in the air flowing in the duct; And an auxiliary filter installed on the discharge side of the duct for secondary filtering the remaining dust in the air primarily filtered by the metal dust filter.

The metal dust filter using the electromagnet disposed by the flow analysis according to the present invention and the dust collecting device for a shipbuilding with the same have a square bar shape and are made of adsorbent ribs arranged across the inner side wall of the casing, It can be effectively adsorbed.

In addition, the present invention can adsorb metal dust while reducing the flow rate of air at various points through a configuration in which the adsorption ribs are alternately arranged, so that a large amount of metal dust can be collected.

In addition, the present invention is capable of significantly increasing the amount of metal dust adsorbed on the adsorption ribs by providing a collection net made of a metallic material.

In addition, the present invention provides a non-metallic auxiliary collection network that cooperates with a collection network made of a metallic reed to further increase the amount of metal dust adsorbed, as well as collect a large amount of non-metallic dust.

Further, the present invention is easy to operate and replace, and is equipped with a hinged door for easy cleaning.

Figures 1 and 2 are reference diagrams for describing the prior art.
3 is a schematic configuration diagram of a shipboard sprinkler according to an embodiment of the present invention;
4 is a longitudinal sectional view for explaining a configuration of a metal dust filter according to an embodiment of the present invention.
Figure 5 is a cross-sectional view according to II of Figure 4;
6 is a reference view for explaining an action of an adsorption rib in a metal dust filter according to an embodiment of the present invention;
7 is a flow analysis graph showing the results of flow analysis for a metal dust filter according to an embodiment of the present invention through experiments.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The metal dust filter and the dust collector for shipbuilding including the same according to the present invention provide a method for rapidly reducing the flow velocity of the contaminated air while smoothly maintaining the flow of polluted air by the flow analysis, So that the metal dust can be adsorbed by using the magnetic force of the electromagnet. According to the present invention, the dust containing the metal component can be effectively collected even in the closed space of the shipyard, and the operation and the replacement can be easily performed, thereby facilitating the cleaning.

Hereinafter, the configuration according to the embodiment of the present invention will be described in detail.

3 is a schematic configuration diagram of a shipboard sprinkler according to an embodiment of the present invention.

As shown in the drawing, the dust collecting apparatus according to the embodiment of the present invention includes a duct 120 having a suction port 120a and a discharge port 120b while providing a flow path for air, and a duct 120 installed in the duct 120 to suck air And a duct 130 connected to the duct 120 and sucking mainly metallic dust by the magnetic force of the electromagnet in the air sucked by the impeller 130 and flowing in the duct 120 And a sub filter (140) installed on the discharging side of the duct (120) for secondary filtering the remaining dust in the air primarily filtered by the metal dust filter (110).

Here, the essential part of the embodiment of the present invention is the metal dust filter 110. The metal dust filter 110 is provided with a means for rapidly weakening the flow rate of air by applying a flow analysis and effectively discharging the metal dust in the air by the magnetic force of the electromagnet at a point where the flow rate of the air is weakened So that it can be adsorbed. The structure of the present invention will be described below with reference to the metal dust filter 110.

FIG. 4 is a longitudinal sectional view for explaining the construction of the metal dust filter according to the embodiment of the present invention, and FIG. 5 is a cross-sectional view taken along line I-I of FIG.

As shown in the figure, the metal dust filter 110 according to the embodiment of the present invention includes a casing 111, an adsorption rib 112, and a collecting net 113.

First, the adsorption rib 112 abruptly weakens the flow velocity of the air and effectively adsorbs the metal dust from the air using the weakened air flow rate. To this end, the adsorption rib 112 is formed of an electromagnet which adsorbs metal dust by a magnetic force when power is applied, and has a square bar shape. The suction ribs 112 are installed transversely to the upper and lower walls so as to block air flowing along the upper and lower walls of the casing 111. Further, the adsorption ribs 112 are installed in a plurality of alternately arranged along the upper and lower walls of the inner wall of the casing 111, which face each other. That is, the adsorption ribs 112b provided on the lower wall are arranged first, then the adsorption ribs 112a provided on the upper side wall are disposed at the positions separated along the inner flow path 111a of the casing 111, An adsorption rib 112b provided on the lower wall is disposed at a position spaced further along the inner flow path 111a of the casing 111. [

As described above, the adsorption rib 112 is not simply formed of an electromagnet but has a configuration for the shape of the adsorption rib 112 itself, a configuration for an installation method provided across the side wall of the casing 111, The arrangement of the plurality of alternately arranged upper and lower walls of the casing 111 is combined with the arrangement of the adsorption ribs 112 in the casing 111 so that the flow velocity of the air is reduced before and after the adsorption rib 112 Points can be secured. At that point, the metal dust can be effectively adsorbed.

Meanwhile, the collection net 113 is formed in a net shape and is installed in such a manner that it covers the outer surface of the absorption rib 112. Furthermore, the trapping net 113 is made of a metallic material capable of absorbing metal dust while receiving magnetism of the electromagnet. The trapping mesh 113 having such a configuration not only ensures a larger surface area on which the metal dust can be adsorbed on the outer surface of the adsorption rib 112 but also collects a larger amount of metal dust by the trapping space formed between the meshes I can do it. Therefore, the adsorption amount for the metal dust is drastically increased as compared with the case where only the adsorption rib 112 is used.

Here, it is preferable to further include an auxiliary collection net (not shown) of a fibrous material which is supported on the outer side of the collection net 113 in the same manner as the collection net 113. The auxiliary collection net, like the collecting net 113, has a net shape but does not magnetize even when it receives the magnetic force of the electromagnet. However, since the auxiliary collection net is made of a fibrous material having a rough surface, it plays a role of collecting the non-metallic dust more effectively than the collection net 113. Of course, in the case of the auxiliary collection net, an additional collection space is formed on the surface of the absorption rib 112, thereby increasing the amount of adsorbed metal dust.

The casing 111 is provided with an inlet and an outlet so as to allow air to pass therethrough according to a blowing direction, and flanges 111b are provided around the inlet and outlet for connecting the duct 120 or the pipe. 5, the lower wall of the casing 111 is hinged to the lower end of the right wall or the left wall to form a hinged door 111c. This makes it easy to open the hinged door 111c and to clean the large amount of dust collected on the surface of the absorption rib 112.

FIG. 6 is a view for explaining the action of the adsorption rib in the metal dust filter according to the embodiment of the present invention, and FIG. 7 is a graph showing the flow of the metal dust filter according to the embodiment of the present invention, It is an analysis graph.

In considering the metal dust filter 110 according to the embodiment of the present invention, the most problematic is the air flow rate. Since a general industrial blower usually exhibits a flow rate of about 5 to 10 m / s, it is unclear whether metal dust will be adsorbed by magnetic force despite the flow rate of air even if an electromagnet is installed in the casing 111. Therefore, the present invention is intended to secure a point at which the flow velocity of the air is reduced through the flow analysis.

  As shown in FIG. 6, in the metal dust filter 110 according to the embodiment of the present invention, the region W before and after the adsorption rib 112 is a point at which the flow velocity rapidly drops. This can be confirmed by the flow analysis graph shown in FIG. FIG. 7 is a graph showing changes in the flow of air over the entire area of the metal dust filter 110 according to the embodiment of the present invention through color change. In the front and rear regions of all the adsorption ribs 112, Which shows that the flow rate of air is rapidly weakened. This result is obtained by performing repetitive experiment and flow analysis while varying the shape, height, and number of the adsorption ribs 112, and the configuration and arrangement of the adsorption ribs 112. Here, the plurality of adsorption ribs 112 are arranged to filter out more metal dust because the portion where the magnetic force is generated is limited to one surface in the case of the electromagnet.

Generally, when the adsorption rib 112 is installed in the flow path, a portion where the flow velocity of the air is weak is generated. However, the optimum rib size and position are determined through the flow analysis according to the flow rate. In the experiment, the velocity of the inlet was 10m / s and the pressure difference between the inlet and the outlet was 14Pa. As shown in FIG. 7, the flow velocity before and after the adsorption rib 112 is about 0.4 to 3 m / s, as shown in FIG. 7 I have.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. It is clear that the present invention can be suitably modified and applied in the same manner. Therefore, the above description does not limit the scope of the present invention, which is defined by the limitations of the following claims.

110: metal dust filter 111: casing
111c: Hinged door 112, 112a, 112b:
113: collection net 120: duct
130: impeller 140: auxiliary filter

Claims (7)

A casing having an inlet port and an outlet port so as to allow air to pass therethrough according to a blowing direction;
It is installed on the inner wall of the casing, and is installed across the inner wall of the casing in the form of a square bar so as to rapidly weaken the flow rate of the air before and after the installation point, one of the inner wall of the casing facing each other And a plurality of alternately disposed on the other side wall and an adsorption rib made of an electromagnet for adsorbing the metal dust from the air whose velocity is weakened. The method of claim 1,
Metal dust filter, characterized in that the outer surface of the adsorption rib is further coated with a trapping net in the form of a mesh to increase the amount of adsorption to the metal dust. The method of claim 2,
The collection network is a metal dust filter, characterized in that made of a metallic material that can be magnetized by the magnetic force of the electromagnet. The method of claim 2,
Metal dust filter, characterized in that the secondary trap of the non-metallic material is made of the form of a net on the outside of the collecting network is not magnetic even when subjected to the magnetic force of the electromagnet. The method of claim 1,
Wherein one of the side walls of the casing is made of a sliding door. The method of claim 1,
Wherein the casing is provided with a flange around the inlet and the outlet for connection to a duct or a pipe. A duct for providing a flow path of air;
An impeller installed in the duct to suck and discharge air;
A metal dust filter according to any one of claims 1 to 5, which is connected to the middle of the duct and is sucked by the impeller and mainly adsorbs metal dust in air flowing through the duct;
And an auxiliary filter installed on the discharge side of the duct for secondary filtering the remaining dust in the air primarily filtered by the metal dust filter.

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