KR101339901B1 - Metal dust filter using permanent magnet and collecting apparatus with the same - Google Patents

Abstract

The present invention relates to a dust filter using a permanent magnet and a dust collecting device having the same, which can effectively collect dust containing a metal component even in an enclosed space of the shipyard, easy to clean and easy to operate and replace, lightweight and It also has economic feasibility.
The dust filter of the present invention includes a main body of a tubular shape having an inlet and an outlet and a flow path formed therein so as to allow the blown air to pass therethrough; The main body is installed in a shape that protrudes across the inner wall in the transverse direction, but a plurality of alternately arranged on one side wall and the other side wall of the inner wall of the main body alternately, the air flow rate before and after the installed point While absorbing the metal dust while rapidly weakening the filter bar comprising a casing formed in the form of a rectangular bar having an inner space, and a plurality of permanent magnets spaced apart from each other in the inner space along the longitudinal direction of the casing It is configured to include.

Description

Metal dust filter using permanent magnet and collecting apparatus with the same

The present invention relates to a dust collecting device, in particular, dust can be effectively collected dust containing metal components even in the confined space of the shipyard, easy to clean and easy to clean, lightweight and economical dust filter using a permanent magnet And it relates to a dust collector having the same.

Currently, Korea is a leader in the global shipbuilding market and is highly regarded for its technology and quality. However, the working environment of the shipyard is very poor. In particular, many workers, neighboring residential areas and residents are suffering from noise and vibration pollution and dust.

Welding and painting are the main tasks that are frequently performed at shipyards, and the generation of impurities and dust is beyond imagination. Particularly, dust that could not be removed quickly when working inside an enclosed vessel not only directly harms workers, but also affects residential districts near shipyards, leading to legal disputes.

  Therefore, the shipyard is using a dust collector in order to remove a large amount of dust generated during welding and painting work, as shown in Figure 1 by using a large-capacity blower (10) forcibly discharge the air and dust in the workplace outside Use a method to make it work. 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.

In summary, the dust collector for removing a large amount of dust generated during welding and painting work in shipyards,

First, improve the worker's environment in a closed space

Second, effective dust collection of impurities and dust containing iron

Third, easy operation and easy replacement and cleaning of dust filter

Although three purposes should be realized, the dust collector according to the prior art has not satisfied any of the above three.

Therefore, it is urgent to develop an environment-friendly and highly efficient dust collector that can effectively treat contaminated air and dust generated in the workplace to improve the working environment of the worker and to block the air pollution, and to easily replace and clean the dust filter.

Accordingly, the present invention has been proposed to solve the conventional problems as described above, an object of the present invention is to effectively collect dust containing a metal component even in an enclosed space of the shipyard, and easy to operate and replace the cleaning The present invention provides a dust filter using a permanent magnet and a dust collecting device having the same, which are easy to use, lightweight and economical.

Dust filter filter bar according to the technical idea of the present invention to achieve the above object, the casing formed in the form of a rectangular bar having an inner space; The technical configuration is characterized by including a plurality of permanent magnets spaced apart from each other in the inner space along the longitudinal direction of the casing.

Here, the ferromagnetic material may be disposed between the permanent magnets spaced apart.

In addition, the casing may be made of a nonmagnetic material to facilitate mounting and separation of the dust filter.

In addition, one end of the casing may be characterized in that the annular handle is installed.

On the other hand, the dust filter according to the present invention, the main body of the tubular form having an inlet and an outlet and a flow path therein so as to pass the blown air; The main body is installed in a shape that protrudes across the inner wall in the transverse direction, but a plurality of alternately arranged on one side wall and the other side wall of the inner wall of the main body alternately, the air flow rate before and after the installed point The technical configuration is characterized by including the above-described filter bar for adsorbing metal dust while abruptly weakening.

The filter bar may further include a pocket for a filter bar having an inlet open to an outer surface of the main body so that the filter bar can be inserted and detachable from the outside of the main body.

In addition, the casing side of the filter bar may be characterized in that the wheel for rolling rolling along the inner surface of the pocket is partially protruded to the outside.

In addition, an intermediate cleaning film may be further provided on an outer surface of the pocket so as to block metal dust adsorbed on the outer surface of the pocket and moving along the filter bar on the way when the filter bar is removed from the pocket. .

In addition, the outer surface of the pocket for the filter bar may be characterized in that the trap is formed of a net in order to increase the amount of adsorption to the metal dust.

In addition, the collecting network may be made of a magnetic material capable of measuring the magnetic force by the magnetic force of the filter bar.

In addition, the outer side of the collecting network may be characterized in that the secondary trapping network is made of a non-magnetic material made of a net form and is not magnetic even when subjected to the magnetic force of the permanent magnet.

In addition, the main body may be characterized in that one of the side walls made of a swinging door.

On the other hand, the dust collector according to the present invention includes a duct for providing an air passage; An impeller installed in the duct to suck and discharge air; A dust filter connected to the middle of the duct and sucked by the impeller and mainly adsorbing metal dust in air flowing through the duct; It is installed on the discharge side of the duct and comprises a secondary filter for secondary filtering the remaining dust in the air primarily filtered by the dust filter, the dust filter, the inlet and outlet so as to pass the blown air through A main body having a tubular shape having a flow path formed therein; It is installed in a form protruding across the inner wall of the main body, but a plurality of alternately arranged on one side wall and the other side of the inner wall of the main body to alternate with each other, the air flow rate is weakened before and after the installation point The technical configuration is characterized by including the above-described filter bar for adsorbing metal dust while.

Here, the dust filter is further provided with a pocket for the filter bar having an inlet open to the outer side of the main body so that the filter bar can be inserted detachably from the outside of the main body, the outer side from the casing side of the filter bar As part of the protruding part may be installed rolling wheels rolling along the inner surface of the pocket.

The dust filter using the permanent magnet according to the present invention and the dust collecting device having the same, can be effectively operated while adsorbing dust containing a metal component by a filter bar formed in a rectangular bar form removable across the inner side wall of the main body And easy to replace, easy to clean, lightweight and economical.

In addition, the present invention has an effect that can effectively adsorb metal dust while reducing the flow rate of the air at various points through the configuration in which the filter bar is alternately arranged.

In addition, the present invention can significantly reduce the cost and weight than using an electromagnet by using a small permanent magnet with a strong magnetic force continuously arranged.

In addition, since the present invention uses a permanent magnet, unlike the case of using an electromagnet, the present invention is not only able to adsorb metal dust to one side but also to adsorb metal dust through all three surfaces protruding into the main body. There is this.

In addition, the present invention, the casing of the filter bar is made of non-magnetic stainless steel, it is easy to install and detach the filter bar to the dust filter.

In addition, the present invention is provided with a collecting network made of a magnetic material can greatly increase the amount of metal dust adsorbed on the filter bar.

In addition, the present invention is provided with an auxiliary collecting network made of a nonmagnetic material that cooperates with the collecting network made of magnetic material to further increase the amount of metallic dust adsorbed, as well as to collect a large amount of non-metallic dust.

In addition, the present invention is easy to clean the swing door is installed.

Figures 1 and 2 are reference diagrams for describing the prior art.
3 is a schematic configuration diagram of a dust collector according to an embodiment of the present invention.
Figure 4 is a longitudinal cross-sectional view for explaining the configuration of the dust filter according to an embodiment of the present invention.
5 is a perspective view of a dust filter according to an embodiment of the present invention.
6 is a cross-sectional view according to II of FIG. 4.
7 is a perspective view for explaining the configuration of the filter bar according to an embodiment of the present invention.
8 is an assembled perspective view of the filter bar according to the embodiment of the present invention.
9 is a reference view for explaining the action of the filter bar in the dust filter according to an embodiment of the present invention.
10 is a flow analysis graph showing the flow analysis results for the dust filter according to an embodiment of the present invention.
11 is an overall flowchart of a performance test applying the dust filter of the present invention.
12 is a flowchart showing a detailed process of collecting metal dust in the performance test applying the dust filter of the present invention.
13 is a graph showing the adsorption amount of metal dust in the performance test applying the dust filter of the present invention.
14 is a longitudinal sectional view for explaining the configuration of the dust filter according to a modified embodiment of the present invention.

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

The dust filter using the permanent magnet according to the present invention and the dust collector having the same provide a method for rapidly weakening the flow rate partially while maintaining a smooth flow of air contaminated by the flow analysis, and a point where the flow rate is weakened. It is configured to adsorb metal dust using magnetic force of permanent magnet in.

Furthermore, the present invention is easy to replace and clean by the filter bar provided to be removable while using a permanent magnet instead of an electromagnet is configured to be expected to be lightweight and economical.

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

3 is a schematic configuration diagram of a dust collecting apparatus according to an embodiment of the present invention.

As shown, the dust collector according to an embodiment of the present invention is provided in the duct 120 having a suction port (120a) and the discharge port (120b), and provided in the duct 120 while providing a flow path of air It is connected between the impeller 130 for discharging and the duct 120, the metal is sucked by the impeller 130, and mainly adsorbs metal dust using the magnetic force of the permanent magnet in the air flowing through the duct 120 And an auxiliary filter 140 installed at the discharge side of the duct 120 to secondary filter the remaining dust in the air filtered primarily by the dust filter 110.

The key part in the embodiment of the present invention is the dust filter 110. The dust filter 110 provides a method for rapidly weakening the air flow rate by applying a flow analysis, and effectively prevents metal dust in the air by the magnetic force of the permanent magnet at the point where the air flow rate is weakened by the method. It is configured to adsorb. Furthermore, the dust filter 110 is configured to easily remove the adsorbed metal dust by having a filter bar 112 that can be easily detached without decomposition. Hereinafter, the configuration of the dust filter 110 around the filter bar 112 will be described.

4 is a longitudinal cross-sectional view for explaining the configuration of the dust filter according to an embodiment of the present invention, Figure 5 is a perspective view of the dust filter according to an embodiment of the present invention, Figure 6 is a cross-sectional view according to I-I of FIG.

As shown, the dust filter 110 according to an embodiment of the present invention comprises a main body 111, a filter bar 112, a filter bar pocket 113, and an intermediate cleaning film 114. .

First, the filter bar 112 adsorbs metal dust by the magnetic force of the permanent magnet 112b, but first, it rapidly weakens the air flow rate and effectively adsorbs metal dust from the air using the weakened air flow rate. It is configured to be. To this end, the filter bar 112 is installed to protrude across the upper wall and the lower wall in a transverse direction so as to block air flowing along the upper wall and the lower wall of the main body 111. Further, the filter bar 112 is installed in a form of a plurality of alternating arrangement. That is, the filter bar 112 is disposed on the lower wall first, and then another filter bar 112 is disposed on the upper wall at a point spaced along the inner flow path 111a of the main body 111, and then, Thus, a plurality of filter bars 112 are provided in such a manner that another filter bar 112 is disposed on the lower wall at a point further spaced apart along the inner body 111 a of the main body 111.

As described above, in addition to using the magnetic force of the permanent magnet 112b, the filter bar 112 is installed across the shape of the filter bar 112 formed in a rectangular bar shape and across the sidewall of the main body 111. The installation method and the arrangement method in which a plurality are arranged alternately along the upper wall and the lower wall of the main body 111 are combined, so that the flow rate of air in the main body 111 before and after the filter bar 112 Weak spots can be obtained. At this point, the metal dust is effectively adsorbed by the magnetic force of the permanent magnet 112b.

The main body 111 is formed in the form of a pipe having an inlet and outlet, the inner passage 111a for connecting the inlet and the outlet so that the air flows to pass the air in the blowing direction. In addition, the main body 111 is provided with a flange 111b around the inlet and the outlet, respectively, for connection with the duct 120 or the pipe. In addition, as shown in FIG. 6, the main body 111 is hinged to the lower end of the right side wall or the left side wall, which is one of the side walls, and includes a swinging door 111c. This facilitates the cleaning operation of opening the door 111c and collecting and removing a large amount of dust collected on the surface of the filter bar 112.

The filter bar pocket 113 may be inserted into the filter bar 112 from the outside of the main body 111 so as to be detachably mounted. The filter bar pocket 113 may have an inlet open to the outside of the main body 111. The filter bar pocket 113 may be made of the same metal material as the main body 111, but may be made of synthetic resin, which is a nonmagnetic material, and coated on its inner surface with Teflon. In this case, even if the rolling wheel 112d is not installed on the magnetic filter bar 112, it is easy to fit the pocket 113 and take it out.

The intermediate cleaning membrane 114 is installed at a height of 1 to 2 cm on an outer surface of the pocket 113, in particular, a surface opposed to the flow of air and an opposite surface of the pocket 113. Here, the outer surface of the pocket 113 on which the intermediate cleaning film 114 is installed is the point where metal dust is most adsorbed by the magnetic force of the pocket bar 112. When the intermediate cleaning film 114 is provided as described above, when the filter bar 112 is removed from the pocket 113, the metal dust is adsorbed on the outer surface of the pocket 113 and moves along the filter bar 112. It can be intercepted and collected on the way and collected firstly and the remaining amount of metal dust can be collected secondly.

Hereinafter, a detailed configuration of the filter bar 112 will be described.

7 is a perspective view for explaining the configuration of the filter bar according to an embodiment of the present invention, Figure 8 is an assembled perspective view of the filter bar according to an embodiment of the present invention.

As shown, the filter bar 112 includes a casing 112a, a plurality of permanent magnets 112b, an annular handle 112c, and a rolling wheel 112d.

The casing (112a) is formed in the shape of a square bar having an inner space and is preferably made of a non-magnetic stainless steel so as not to be magnetized by the permanent magnet (112b). As such, when the casing 112a is made of a non-magnetic material, not only the permanent magnet 112b to the casing 112a is easily mounted and detached, but also the filter bar 112 is mounted to the dust filter 110. And separation also becomes easy.

The permanent magnet 112b serves to provide magnetic force to adsorb metal dust. To this end, about 14 permanent magnets 112b having a magnetic force of about 4000gauss in size are disposed in series along the longitudinal direction of the casing 112a, spaced apart from each other. The ferromagnetic material (not shown) such as steel is disposed between the permanent magnets 112b as the filler and the spacer.

The annular handle 112c is simply joined to one end of the casing 112a. This annular handle 112c is useful when moving the filter bar 112, which has a considerable weight, or when it is inserted into and taken out of the pocket 113.

The cloud wheel 112d is installed in a form protruding outwardly to the side of the casing 112a. The rolling wheels 112d are rolled along the inner surface of the pocket 113 so that the filter bar 112 can be easily inserted into or taken out from the pocket 113. If the rolling wheel 114d is not installed, the casing 112a of the filter bar 112 and the inner surface of the pocket 113 are brought into frictional contact with each other under the influence of magnetic force, and thus the pocket 113 is in contact with the pocket 113. It becomes difficult to insert or remove the filter bar. Here, the wheel 112d for rolling is provided with a material capable of minimizing surface friction, such as Teflon. This is to allow the rolling wheel 112d to slide without frictional resistance even if the rolling wheel 112d does not roll along the inner surface of the pocket 113. In addition, the rolling wheel 112d is designed to apply the size and the degree of protrusion to a minimum. This is to minimize the separation of the magnetic force on the metal dust by minimizing the separation of the filter bar 112 and the pocket 113 due to the wheel 112d for rolling.

When the small permanent magnets 112b having strong magnetic force are arranged in series in series, the price is reduced in half and the weight is reduced to one third of the weight compared with the electromagnet. In addition, unlike the electromagnet, it is not only able to adsorb metal dust to one side but also to adsorb metal dust through all three surfaces protruding into the main body 111.

9 is a reference view for explaining the action of the filter bar in the dust filter according to an embodiment of the present invention, Figure 10 is a flow analysis graph showing the flow analysis results for the dust filter according to an embodiment of the present invention.

As shown in FIG. 9, in the dust filter 110 according to the exemplary embodiment of the present invention, the region W before and after the filter bar 112 is a point at which the flow velocity rapidly decreases. This can be confirmed through the flow analysis graph shown in FIG. 10. FIG. 10 shows the change in air flow over the entire area of the dust filter 110 according to the embodiment of the present invention through color change, and the concentration is displayed in the deepest blue in the front and rear areas of all the filter bars 112. It shows that the air flow rate has sharply weakened. These results were obtained by performing repeated experiments and flow analysis while varying the installation form and arrangement, including the shape, height and number of filter bars 112. The plurality of filter bars 112 are alternately arranged to adsorb more metal dust.

In general, when the filter bar 112 is installed in the flow path, a portion of the air flow rate is weakened, but the optimum size and position of the filter bar 112 is determined through flow analysis according to the size of the flow rate. In this experiment, the speed of inlet was 10m / s and the pressure difference between inlet and outlet was 14Pa. It is judged that this pressure difference does not impose a load that adversely affects the performance of the entire dust collector, and as shown in FIG. 10, the flow velocity before and after the filter bar 112 is about 0.4 to 3 m / s. Have

Subsequently, the performance test performed on the dust filter 110 according to the embodiment of the present invention will be described.

In order to measure the performance of the dust filter 110 according to an embodiment of the present invention, a dust collecting device to which the dust filter 110 was applied was constructed and performance tests were performed. 11 is an overall flowchart of a performance test applying the dust filter 110 according to an embodiment of the present invention. First, three filter bars 112 are fitted into the dust filter 110 through the pocket 113, and then air containing metal dust is administered and passed through the dust collector. At this time, a part of the metal dust in the air passing into the dust collector was adsorbed to the outer surface of the pocket 113 in the main body 111 of the dust filter 110. Then, the adsorption performance of the dust filter 110 was examined by collecting the adsorbed metal dust and measuring the amount thereof. Note that the process of collecting the adsorbed metal dust is very simple. In other words, after the metal dust is adsorbed on the outer surface of the filter bar pocket 113, only the filter bar 112 is slowly removed from the pocket 113, the "filtered dust removal", "dust collection" operation of FIG. As can be seen in Figure 12 broken down the adsorbed metal dust is gradually moved along the filter bar 112, collected in one place and then falls. Then, the worker can move to one place and collect the metal dust at once by opening the swing door 111c.

The results of the above performance test are shown in detail in Table 1 and FIG. 13 attached below.

Number of experiments One 2 3 4 5 6 7 8 Initial dust (g) 31.2 30.9 31.0 31.3 31.8 30.8 31.1 31.5 Dust collected (g) 10.6 10.8 10.3 10.5 10.2 9.8 10.1 10.1 Dust collection performance (%) 33.97 34.95 33.23 33.55 32.08 31.82 32.48 32.06

As can be seen from the attached Table 1 and FIG. 13, the amount of metal dust adsorbed by the dust filter 110 and the amount of metal dust adsorbed by the dust filter 110 of the present invention is about 30 to 35% of the total metal dust. Can be confirmed that the average of about 32% was recorded in eight experiments. These results may vary slightly depending on the amount of metal dust contained in the air blown, but considering the results of repeated experiments, it is estimated that approximately 30-35% of the metal dust can be adsorbed.

Subsequently, a dust filter according to a modified embodiment of the present invention will be described.

14 is a longitudinal sectional view for explaining the configuration of the dust filter according to a modified embodiment of the present invention.

As shown, the dust filter according to the modified embodiment of the present invention is characterized in that it comprises a collecting net 115 that is covered on the outer surface of the filter bar pocket 113 instead of the intermediate cleaning film 114 of the previous embodiment. It is done. The collecting network 115 is made of a ferromagnetic material capable of adsorbing metal dust while being magnetic by receiving the magnetic force of the permanent magnet 112b included in the filter bar 112. The collecting network 115 having such a configuration ensures a wider surface area to which metal dust can be adsorbed on the outer surface of the pocket 113 as well as to collect a larger amount of metal dust by the space formed between the meshes. To help. Therefore, when the collecting network 115 is provided, the amount of adsorption to the metal dust is greatly increased as compared with the case where the collecting network 115 is not provided.

As such, when the collecting network 115 is provided, the adsorption amount of the metal dust is greatly increased, but as described above with reference to FIGS. 11 and 12, the advantage of easily collecting the metal dust is weakened. Therefore, it is possible to determine whether to install the collecting network 115 in consideration of these advantages and disadvantages.

Here, in the same manner as the collecting network 115 may be further provided with an auxiliary collecting network (not shown) of the rough surface of the fibrous material to support the collecting network 115 is overlaid on the outside thereof. The auxiliary collecting network is formed in a net form like the collecting network 115 but is not magnetic even when subjected to the magnetic force of the filter bar 112. However, since the auxiliary collecting network is made of a fiber material having a rough surface, it plays a role of collecting more effectively than the collecting network 115 for the non-metallic dust. Of course, in the case of the auxiliary collecting network to form an additional collecting space on the outer surface of the filter bar pocket 113 also serves to increase the amount of adsorption to the metal dust.

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: dust filter 111: main body
111a: internal flow path of the main body 111b: flange
111c: Swing door 112: Filter bar
112a: casing 112b: permanent magnet
112c: Annular handle 112d: Cloud wheel
113: pocket for the filter bar 114: intermediate cleaning film
115: capture network 120: duct
130: impeller 140: auxiliary filter

Claims (14)

A main body of a tubular shape having a flow path formed therein and having an inlet and an outlet so as to allow the blown air to pass therethrough;
A casing formed in a rectangular bar shape having an inner space; It consists of a plurality of permanent magnets spaced apart from each other in the inner space along the longitudinal direction of the casing, is installed in a form protruding across the inner wall of the main body in the transverse direction of the inner wall of the main body A plurality of filter bars arranged alternately on one side wall and the other side wall facing each other and adsorbing metal dust while rapidly weakening the air flow rate before and after the installed point;
It includes a filter bar pocket having an inlet open to the outer side of the main body so that the filter bar can be inserted into the removable from the outside of the main body,
And a middle cleaning film is further provided on an outer surface of the pocket so as to block metal dust adsorbed on the outer surface of the pocket and moving along the filter bar on the way when the filter bar is removed from the pocket. The method of claim 1,
The filter bar is a dust filter, characterized in that the ferromagnetic material is disposed between the permanent magnets spaced apart. The method of claim 1,
The filter bar is a dust filter, characterized in that the casing is made of a nonmagnetic material. The method of claim 1,
The filter bar is a dust filter, characterized in that the ring-shaped handle is installed at one end of the casing. delete delete The method of claim 1,
Part of the casing side of the filter bar dust filter, characterized in that the rolling wheels protruding outwardly to roll along the inner surface of the pocket. delete The method of claim 1,
Dust filter, characterized in that the outer surface of the filter bar pocket is further coated with a trapping net in the form of a mesh to increase the amount of adsorption to the metal dust. 10. The method of claim 9,
The collecting network is a dust filter, characterized in that made of a magnetic material that can be magnetic by receiving the magnetic force of the filter bar. The method of claim 10,
The dust filter, characterized in that the secondary trap is made of a non-magnetic material in the form of a net on the outside of the collecting net is not magnetic even under the magnetic force of the permanent magnet. The method of claim 1,
The main body dust filter, characterized in that one of the side walls made of a swinging door. A duct for providing a flow path of air;
An impeller installed in the duct to suck and discharge air;
The dust filter according to any one of claims 1 to 4, 7 and 9 to 12, which is connected to the middle of the duct and sucked by the impeller and mainly absorbs metal dust from the air flowing in the duct. Wow;
And a sub-filter installed on the discharge side of the duct to secondary filter the remaining dust in the air filtered primarily by the dust filter. delete

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