KR20180047109A - Filter cartridge for dust collector - Google Patents

Abstract

The present invention relates to a filter cartridge for a dust collector, wherein the dust collector includes: a dust collecting case having a dust inlet and an air outlet; a blocking plate horizontally coupled to an upper portion of the dust collecting case; and a dedusting means provided at an upper portion of the blocking plate to supply compressed air for dedusting to a lower portion of the blocking plate. The filter cartridge for a dust collector comprises: a filtering cloth vertically disposed at the lower portion of the blocking plate and removing dust contained in external air introduced into the dust inlet; a mesh net inserted into the filtering cloth to support the shape of the filtering cloth to be maintained; an upper cap for coupling the filtering cloth to the blocking plate; a lower cap coupled to a lower portion of the filter cloth; and a plurality of dome-shaped dedusting air diffusion domes coupled to each other in a height direction inside the mesh net, and diffusing the compressed air for dedusting supplied from the dedusting means toward an inner wall surface of the filter cloth.

Description

[0001] FILTER CARTRIDGE FOR DUST COLLECTOR [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a filter cartridge for a dust collector, and more particularly, to a filter cartridge for a dust collector capable of efficiently removing dust adhering to a filter fabric during filtration of dust.

In general, a dust collector is a device that removes dust generated at a factory, a coal mine, or a tunnel construction site to discharge clean air into the atmosphere.

An example of such a dust collector is disclosed in Japanese Patent No. 10-0918506 entitled " Filter cartridge and dust collector equipped therewith ".

1 is a schematic diagram illustrating the configuration of a filter cartridge 10 of the disclosed dust collector.

As shown in the drawing, the conventional filter cartridge 10 includes a filter cloth 11 and a mesh net 13 which is provided inside the filter cloth 11 to maintain the shape of the filter cloth 11.

The outside air A1 flowing into the inside of the dust collector flows into the mesh net 13 and moves upward along the filter cloth 11 to remove the dust D and clean the processed air A2, .

When this dust collecting process is performed for a long time, a considerable amount of dust D adheres to the surface of the filter cloth 11. [ Thus, the dust collector removes the dust D attached to the surface of the filter cloth 11 by the period of the dust removing unit. The discharging means supplies compressed air W for discharging to the inside of the filter cloth 11 at the upper portion of the filter cloth 11 and pressurizes the filter cloth 11 ) Surface dust D from the surface.

The filter cartridge 10 is moved vertically downward along the inside of the filter cloth 11, that is, the inside of the mesh net 13, so that the filter cartridge 10, which actually collides with the inner wall surface of the filter cloth 11, There is a low probability problem. That is, as the contact area of the dust-removing compressed air W with the filter cloth 11 becomes wider, the dust-removing efficiency of the dust D becomes higher. However, in the conventional filter cartridge 10, The contact area between the filter cloth 11 and the filter cloth 11 is small and the dust is easily removed by the moving pressure.

On the other hand, in the conventional filter cartridge 10, the filter cloth 11 is inserted into the upper cap 15 and fixed in position. However, depending on the use time, the binding force between the filter cloth 11 and the upper cap 15 is lowered, so that the filter cloth 11 may be separated from the upper cap 15. [

SUMMARY OF THE INVENTION An object of the present invention is to provide a filter cartridge for a dust collector capable of improving the dust removing efficiency by widening a contact area between compressed air for dust removal and a filter cloth.

Another object of the present invention is to provide a filter cartridge for a dust collector which can be stably used for a long period of time by imparting a restraining force to maintain the coupled state of the upper cap and the filter cloth.

The above objects and various advantages of the present invention will become more apparent from the preferred embodiments of the present invention by those skilled in the art.

The object of the present invention can be achieved by a filter cartridge for a dust collector. Here, the dust collector includes a dust collecting case having a dust inlet and an air outlet, a shield plate horizontally coupled to an upper portion of the dust collecting case, and a shield plate disposed on the shield plate to supply the dust- A filter bag having a dust removing unit and vertically disposed at a lower portion of the blocking plate to remove dust contained in outside air introduced into the dust inlet; A mesh net inserted into the filter cloth to support the filter cloth so as to maintain its shape; An upper cap for coupling the filter cloth to the blocking plate; A lower cap coupled to a lower portion of the filter cloth; And a dome-shaped exhaust ventilation air diffusion dome coupled to a plurality of inside the mesh net in the height direction to diffuse the exhaust air for exhausting from the exhausting means toward the inner wall surface of the filter cloth .

According to an embodiment of the present invention, the exhausting air diffusion dome is formed in a dome shape having a diameter smaller than the inner diameter of the mesh net and gradually increasing in diameter toward the upward direction, and is in contact with the exhausting compressed air, An air diffuser roof diffusing into the inner wall surface of the filter cloth; A lower support ring provided corresponding to an inner diameter of the mesh network and coupled to an inner wall surface of the mesh network; And a dust transfer mesh network connecting the lower support ring and the lower portion of the air diffusion roof and moving the external air introduced through the dust inlet upward.

The filter cartridge according to the present invention is provided with a ventilation air diffusing dome therein to effectively remove dust attached to the filter cloth.

Further, in the filter cartridge according to the present invention, the supporting protrusion is protruded on the outer peripheral edge of the upper portion of the filter cloth, so that the binding force with the upper cap can be further improved.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view schematically showing a process of using a filter cartridge for a conventional dust collector;
2 is a view showing the structure of a dust collector to which a filter cartridge according to the present invention is applied,
3 is an exploded perspective view showing a coupling structure of a filter cartridge according to the present invention,
FIG. 4 is an exemplary view showing a process of discharging the filter cartridge according to the present invention. FIG.

For a better understanding of the present invention, a preferred embodiment of the present invention will be described with reference to the accompanying drawings. The embodiments of the present invention may be modified into various forms, and the scope of the present invention should not be construed as being limited to the embodiments described in detail below. The present embodiments are provided to enable those skilled in the art to more fully understand the present invention. Therefore, the shapes and the like of the elements in the drawings can be exaggeratedly expressed to emphasize a clearer description. It should be noted that in the drawings, the same members are denoted by the same reference numerals. Detailed descriptions of well-known functions and constructions which may be unnecessarily obscured by the gist of the present invention are omitted.

2 is a schematic view schematically showing a sectional configuration of a dust collector 100 equipped with a filter cartridge 150 according to the present invention.

The dust collector 100 of the present invention includes a case 110 having a dust inlet 111 and an air outlet 113, a shield plate 120 provided on an upper side of the case 110, an air outlet 112, A dust removing unit 140 for removing the dust D adhered to the filter cartridge 150 and a dust removing unit 140 for removing the dust D adhered to the filter cartridge 150, A filter cartridge 150 that is coupled to the filter cartridge 120 and removes dust D contained in the outside air A1 and a filter cartridge 150 that is provided inside the filter cartridge 150, And a deodorizing air diffusion dome 160 for diffusing the wafers W to the inner wall surface of the filter cartridge 150.

A predetermined space is formed in the case 110 so as to form a predetermined movement path until the outside air A1 is introduced and discharged, and spaces are vertically divided by the blocking plate 120. [

A dust inlet 111 is formed in a lower sidewall of the case 110 so that outside air A1 including dust is introduced from the outside. An air outlet 113 is formed at the upper end of the case 110 to discharge the process air A2 from which the dust D is removed by the filter cartridge 150. [

The blocking plate 120 is horizontally installed on the upper side inside the case 110. [ The blocking plate 110 blocks the outside air A1 from being discharged directly to the air outlet 113 without passing through the filter cartridge 150. [

The blocking plate 120 is provided with a plurality of through holes 121 through which the filtered processing air A2 is discharged through the filter cartridge 150. [ The filter cartridge 150 is vertically coupled to the plurality of through holes 121. The blocking plate 120 is welded to the inner wall surface of the case 110 or is coupled by a fastening means such as a screw.

The exhaust fan 130 is provided in the air outlet 113 and is rotationally driven. As the exhaust fan 130 is rotated, a negative pressure is formed inside the case 110. Thereby, the outside air A1 is introduced into the case 110, dust is removed from the inside thereof, and then the air is discharged to the air outlet 113.

The discharging means 140 drops the dust D adhering to the surface of the filter cartridge 150. The venting means 140 includes a compressor 141, a timer 142, a valve 143 and a blow tube 144.

The blow tube 144 is installed to cross the inside of the case 110 and is disposed at a predetermined distance from the upper portion of the blocking plate 120. The blow tube 144 has an air outlet 145 at a portion corresponding to the through hole 121. One end of the blow tube 144 is coupled to the inner wall surface of the case 110 by the fastening means 146 and the other end is extended to the outside of the case 110 so as to communicate with the compressor 141 and the valve 143 .

When the compressor 141 is driven in a state where the valve 143 is opened, the compressed air for exhaust W is discharged through the air outlet 145 of the blow tube 144. The discharged compressed air for exhausting (W) is injected into the filter cartridge 150 through the through hole 121.

Dust adhering to the wall surface is shaken while the filter cartridge 150 is vibrated by the pressure of the exhaust air W for compressing the filter cartridge 150 to move to the filter cartridge 150, It collides with the roof of the dome 160 and diffuses and impacts on the wall surface of the filter cartridge 150, thereby removing dust adhering to the wall surface secondarily.

The timer 142 generates a control signal for driving the compressor 141 for a predetermined time after the reference time elapses from when the driving of the exhaust fan 130 is stopped. The operation of the compressor 141 and the valve 143 can be controlled by a signal applied from the timer 142. [

FIG. 3 is an exploded perspective view of the filter cartridge 150 according to the present invention, and FIG. 4 is an exemplary view showing a dust removing process of the filter cartridge 150 according to the present invention.

As shown, the filter cartridge 150 is vertically coupled to the through-hole 121 of the blocking plate 120 in the downward direction. The filter cartridge 150 includes a filter cloth 151, a mesh net 153 inserted into the filter cloth 151 to maintain the shape of the filter cloth 151, And an upper cap 155 and a lower cap 157 which are coupled to upper and lower portions of the filter cloth 151, respectively.

The filter cloth 151 is folded in a cylindrical shape so that a plurality of troughs 151a and mountains 151b are repeatedly formed in the vertical direction. The filter cloth 151 may be formed of a polyester material, or may be formed of a nonwoven fabric or the like.

At the upper end of the filter cloth 151, there is provided a support protrusion 152 protruding a predetermined length in a radially outward direction. The support protrusions 152 are formed in an elastically deformable shape. For example, it may be formed into a hemispherical shape formed of a metal wire or rubber or silicon.

When the support protrusion 152 is inserted into the inside of the upper cap 155 as shown in Fig. 4, it is elastically compressed and held on the inner wall surface of the upper cap 155. This makes it possible to solve the problem that the filter cloth 151 is separated from the upper cap 155 by the use of the conventional long time period so that the binding force can be applied so as to stably maintain the combined state of the filter cloth 151 and the upper cap 155.

The mesh net 153 is formed of a plastic material and is inserted into the filter cloth 151 so as to maintain the filter cloth 151 in a cylindrical shape and form a path through which the outside air A1 moves.

The upper cap 155 is coupled to the upper end of the filter cloth 151. The upper cap 155 may be formed of a urethane material or a resin material and is joined to the upper end of the filter fabric 211 by insert molding. The upper cap 213 has an inclined locking protrusion 155a formed so that its inner circumferential surface is inclined downward so that its inner diameter becomes narrower from the upper end to the lower end. The inclination preventing protrusion 155a protrudes toward the center from the inner wall surface of the filter fabric 151 in the form of a flange.

The holder 159 is held in contact with the upper surface of the shield plate 120. The holder 159 includes an insertion tube 159b to be inserted into the through hole 121 and a latching end 159a formed by bending at the end of the insertion tube 159b and hooked to the inclined locking protrusion 155a .

A plurality of the exhausting air diffusing dome 160 are connected to the mesh network 153 at different heights so that the exhausting compressed air W supplied from the exhausting means 140 is diffused toward the filter cloth 151, Improves efficiency.

The exhaust air diffusion dome 160 is formed in a dome shape in which the area gradually decreases from the lower part to the upper part. The exhausting air diffusing dome 160 has an air diffusing roof 161 where the surface is clogged so that the exhaust compressed air W supplied from the upper side is scattered by the impact of the compressed air W and the lower supporting ring 165, And a dust transfer mesh network 163 connecting the lower support ring 165 and the lower portion of the air diffusion roof 161 to each other and allowing the outside air A1 to pass therethrough.

The air diffusing roof 161 is formed in a hemispherical shape as shown in Fig. The air diffusing roof 161 blocks the discharge of the compressed air W for discharging from the upper portion of the mesh net 153 without interference. The compressed air W for exhausting strikes against the surface of the air diffusion roof 161 and is blocked from moving and diffuses in all directions as shown in FIG. 4 and strikes against the inner wall surface of the filter cloth 151.

The lower support ring 165 fixes the exhaustion air diffusing dome 160 inside the mesh network 153. The lower support ring 165 is formed to have a diameter r2 corresponding to the inner diameter of the mesh net 153. [ The lower support ring 165 is fitted to the inner wall surface of the mesh net 153 and is detachably fixed by a fastening member (not shown) although not shown in the figure.

A dust transfer mesh network 163 is provided between the lower support ring 165 and the air diffusion roof 161. The dust transfer mesh network 163 forms a path for moving the external air A1 introduced from the dust inlet 111 to the air outlet 113. [

Here, the larger the diameter r1 of the air diffusion roof 161, the higher the dust removal efficiency, but the traveling path of the outside air A1 becomes narrower.

The diameter r1 of the air diffusing roof 161 is set within a range in which the movement of the outside air A1 is not blocked in consideration of the diameter r2 of the lower support ring 165, .

The operation of the dust collector 100 and the filter cartridge 150 according to the present invention having such a configuration will be described with reference to FIGS. 2 to 4. FIG.

When the user applies power to the dust collector 100, the exhaust fan 130 rotates. External air (A1) flows through the dust inlet (111) of the case (110) by the rotation of the exhaust fan (130). At this time, the draining means 140 is not driven.

The outside air A1 flows into the case 110 and then blocked by the shutoff plate 120 so as to be introduced into the filter cartridge 150. [ The outside air A1 is moved upward along the mesh network 153 of the filter cartridge 150 and contacts the filter cloth 151 to remove the dust D. [

The processing air A2 from which the dust D has been removed moves upward through the through hole 121 and is discharged to the outside through the air outlet 113. [

When dust D is processed, a large amount of dust D adheres to the surface of the filter cloth 151.

When the time set in the timer 142 elapses, the driving of the exhaust fan 130 is stopped, and the compressor 141 is driven. Then, as the valve 143 is opened, the compressed air W for exhausting is moved through the blow tube 144.

The compressed air W for exhausting is discharged through the air outlet 145 and moved to the lower portion of the mesh net 153. At this time, as shown in FIG. 4, the compressed air W for exhausting the dust is blocked by the air diffusion roof 161 to be blocked, and the compressed air W spreads to the periphery and strikes against the filter cloth 151. The filter fabric 151 is primarily used to remove the dust D by the vibration generated by the movement of the compressed air W for exhausting and diffuse by the air diffuser roof 161 to directly hit the filter cloth 151 Dust is secondarily removed by the exhaust air for compressed exhaust (W).

By this second dust removal, 80-90% of the dust D attached to the filter cloth 151 can be removed.

When the exhaustion removing process is completed, the exhaust fan 130 is rotated again, the exhausting unit 140 stops driving, and the dust removing process of the external air A1 proceeds.

As described above, the filter cartridge according to the present invention is provided with a dust-discharging air diffusion dome therein to effectively remove dust attached to the filter cloth.

Further, in the filter cartridge according to the present invention, the supporting protrusion is protruded on the outer peripheral edge of the upper portion of the filter cloth, so that the binding force with the upper cap can be further improved.

The embodiments of the filter cartridge for a dust collector according to the present invention described above are merely illustrative and those skilled in the art will appreciate that various modifications and equivalent embodiments can be made without departing from the scope of the present invention. You will know. Therefore, it is to be understood that the present invention is not limited to the above-described embodiments. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims. It is also to be understood that the invention includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.

100: dust collector 110: case
111: dust inlet 113: air outlet
120: blocking plate 121: through hole
130: exhaust fan 140: exhausting means
141: compressor 142: timer
143: valve 144: blow tube
145: air outlet 146: fastening means
150: filter cartridge 151: filter cloth
151a: Goal 151b: Mountain
152: support protrusion 153: mesh mesh
155: upper cap 155a: inclined stopper
157: lower cap 159: holder
159a: latching end 159b: insertion tube
160: exhaustion air diffusion dome 161: air diffusion roof
163: Dust transfer mesh network 165: Lower support ring
A1: Outside air
A2: Process air
D: Dust
W: Compressed air for exhausting

Claims (2)

A filter cartridge for a dust collector,
The dust collector includes a dust collecting case having a dust inlet and an air outlet, a blocking plate horizontally coupled to an upper portion of the dust collecting case, and a dust removing unit provided on the blocking plate to supply compressed air for discharging to a lower portion of the blocking plate. Means,
A filter cloth vertically disposed at a lower portion of the blocking plate to remove dust contained in outside air introduced into the dust inlet;
A mesh net inserted into the filter cloth to support the filter cloth so as to maintain its shape;
An upper cap for coupling the filter cloth to the blocking plate;
A lower cap coupled to a lower portion of the filter cloth;
And a dome-shaped exhaust ventilation air diffusing dome coupled to a plurality of the inside of the mesh net in the height direction to diffuse the exhausting compressed air supplied from the exhausting unit toward the inner wall surface of the filter cloth. Filter cartridges.
The method according to claim 1,
The exhausting air diffusion dome includes:
An air diffusing roof formed in a dome shape having a diameter smaller than the inner diameter of the mesh net and gradually increasing in diameter toward the upper side and being in contact with the compressed air for discharging and diffusing the compressed air for discharging to the inner wall surface of the filter cloth;
A lower support ring provided corresponding to an inner diameter of the mesh network and coupled to an inner wall surface of the mesh network;
And a dust transfer mesh network connecting the lower support ring and the lower portion of the air diffusion roof and moving the external air introduced through the dust inlet upward.

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