KR100655178B1 - Filter structure for dust collector - Google Patents

Abstract

A filter structure for dust collector is provided to improve dust collection efficiency of a filter by maximizing vibration, expansion or trembling phenomenon of the filter fabric when supplying compressed air from the outside to a filter fabric, and reduce maintenance and management costs by minimizing removal operation of dust accumulated on the filter fabric and replacement operation of the filter fabric due to damage. In a filter(5) for dust collector comprising a dust collecting case having an exhaust fan and dedusting device, and a filter fabric(11) which filters dust contained in external air sucked in the dust collecting case, and has grooves formed longitudinally thereon and creases formed circumferentially thereon, a filter structure for the dust collector comprises: an upper cap(12) which is mounted on a through hole(16) formed in a filter fixing plate(15) within the dust collecting case, of which a bottom surface is closely adhered to an upper surface of the filter fabric, and which is placed on the filter fixing plate such that a flange(17) seals the through hole airtightly; a venturi(19) which is placed on a catching projection(12a) at the center of the upper cap and airtightly seals a reciprocal contact surface of an upper surface of the filter fabric and a bottom surface of the upper cap when the venturi is pressed by a pressing member(18); and a lower cap(13) which is mounted on a lower portion of the filter fabric, and of which an edge is circumferentially cut out in a shape corresponding to the creased filter fabric shape.

Description

Filter structure for dust collector

1 is a cross-sectional view of a filter for a dust collector according to the prior art,

2 is a schematic view of a dust collector equipped with a filter for a dust collector according to the prior art,

3 (a, b) is a plan view and a bottom view of the filter shown in FIG.

Figure 4 is a perspective view of the lower cap attached to the bottom surface of the filter for dust collector according to the present invention,

5 is a cross-sectional view of the filter for dust collector according to the present invention;

6 is a schematic view of a dust collector equipped with a filter for dust collector according to the present invention;

7 is a plan view showing the lower cap attached to the bottom surface of the filter cloth of the filter for dust collector according to the present invention.

* Explanation of symbols used in the main part of the drawing

One; Dust intake

2; Air outlet

3; Dust collection case

4; Exhaust fan

5; filter

6; Dedusting Means

7; Compressor

8; Blowing Tube

10; goal

11; Filter cloth

12; Upper cap

13; Lower cap

14; Retainer

15; Filter fixing plate

16; Through hole

17; flange

18; Pressure member

19; Venturi

The present invention minimizes the accumulation of dust on the filter cloth of the filter even when the filter of the dust collector (especially referred to as a "cartridge bag filter") installed to remove dust generated in a factory or a work site for a long time, the filter The present invention relates to a filter structure for a dust collector to improve dust collection efficiency.

More specifically, to form a valley in the longitudinal direction and to form a pleat in the circumferential direction so as to enlarge the filter cloth dust collecting area of the filter to remove the dust contained in the air sucked into the dust collector, the lower cap mounted to the filter cloth lower end The present invention relates to a filter structure for dust collectors which minimizes dust accumulation at the bottom of the filter cloth by maximizing the expansion, vibration or vibration of the filter cloth when the compressed air is cut and adhered along the corrugated filter cloth shape. .

As shown in FIG. 2, the dust collector according to the prior art includes a dust collecting case 3 in which a dust inlet 1 and an air outlet 2 are formed, and installed in the air outlet 2 and in the dust collecting case 3. With a discharge fan (4) for discharging the sucked air to the outside, a filter (5) installed in the dust collecting case (3) to collect and remove the dust contained in the sucked air, and a compressor (7) Dust adhering to the filter 5 due to vibration, expansion or tremor by compressed air supplied at a predetermined interval (e.g., an interval of 2 to 5 minutes), for example, supplied for 0.05 to 0.1 seconds. It comprises a dedusting means (6) to shake off.

In the figure, reference numeral 8 denotes a blower tube for supplying compressed air discharged from the compressor 7 to the filter 5, and T denotes driving of the exhaust fan 4, the compressor 7 and the like. It is a timer to control at regular intervals.

Therefore, as the air containing the dust is sucked into the dust collecting case 3 through the dust intake port 1 as the exhaust fan 4 is driven at the construction site or the factory, dust or the like contained in the air by the filter 5, etc. The foreign matter is filtered, and the filtered air is discharged into the atmosphere through the air outlet 2 by driving the discharge fan 4.

As dust is accumulated and accumulated on the filter cloth 11 of the filter 5 by using the dust collector for a long time, the compressed air discharged from the compressor 7 is transferred to the filter 5 through the blower tube 8. In the case of supply, dust accumulated and accumulated in the filter 5 due to the vibration, expansion or tremor of the filter 5 falls from the filter 5. Dust falling from the filter (5) is collected and collected by a rotary valve (9) installed in the center of the bottom surface of the dust collecting case (3).

On the other hand, as shown in Figs. 1 and 3 (a, b), the dust collector filter (referred to as " cartridge bag filter ") is disposed in the outside air sucked into the dust collecting case 3 by the exhaust fan 4. It is used to filter the dust included, the bone 10 is formed in the longitudinal direction to increase the dust collecting area to increase the filtration efficiency, the filter cloth 11 is folded in the circumferential direction (referred to as "fabric") (Non-woven fabric or PE material is used), a ring-shaped upper cap 12 coupled to the upper end of the filter cloth 11, a lower cap 13 coupled to close the lower end of the filter cloth 11, and the inner side of the filter cloth 11 And a retainer 14 of a frame structure (which keeps the triangular shape) which is attached to and prevents the filter cloth 11 from being deformed (referred to) to the center.

In the conventional dust collector filter, since the entire lower end of the above-described filter cloth 11 is supported by the lower cap 13 (that the lower end of the filter cloth 11 is restrained by the lower cap 13), the dust removal means 6 Even when the compressed air is supplied to the filter cloth 11 in the opposite direction to the exhaust fan 4, the effects of trembling or vibration of the filter cloth 11 are weakened. Not completely removed, dust accumulates between the bone 10 and the bone 10. For this reason, the air discharge of the filter cloth 11 is not made smoothly, and thus the dust collecting function of the filter 5 is deteriorated.

As described above, when the dust collector is used for a long time and dust is accumulated at the bottom of the filter cloth 11, and the air of the filter 5 is not discharged smoothly, a driving motor for driving the exhaust fan 4 (not shown) Overload is generated or damaged, or the filter cloth 11 is broken and is discharged in a state in which dust is not filtered to the outside, thereby causing a failure in the timer T driving unit. For this reason, as a result of repairing and replacing the driving motor and the timer T of the exhaust fan 4, there is a problem in that the after-care (A / S) cost is increased.

Meanwhile, the lower inclined portion 15 is tapered on the lower side of the filter cloth 11 to prevent dust accumulation at the lower end of the filter cloth 11, but after cutting the tapered bottom of the filter cloth 11, the cutting part is welded ( The welding process is difficult, and thus productivity is decreased, and since the lower end of the filter cloth 11 is wrapped and restrained by the annular lower cap 13, this also cannot completely prevent dust accumulation at the bottom of the filter cloth 11.

An object of the present invention, by using a dust collector filter for a long time to maximize the vibration, expansion or shaking of the filter cloth when supplying compressed air from the outside to the filter cloth in order to remove the accumulated dust on the filter cloth dust accumulated at the bottom of the filter cloth The present invention provides a filter structure for a dust collector that can minimize dust, thereby improving the dust collecting efficiency of the filter.

Another object of the present invention is to provide a dust collector filter structure that can smoothly discharge the filter cloth to minimize the replacement due to accumulated dust removal work and breakage of the filter cloth to reduce the maintenance cost.

Still another object of the present invention is to provide a filter structure for a dust collector, which is easy to manufacture the filter cloth, and thus productivity is improved due to mass production, and a work for easily removing and replacing the filter with respect to the dust collector can be easily replaced.

An object of the present invention described above includes a dust collecting case provided with an exhaust fan and a dust collecting means, and a filter cloth for filtering dust contained in the outside air sucked into the dust collecting case and having a valley formed in the longitudinal direction and having a pleat formed in the circumferential direction. In filter for dust collector to say,

An upper cap mounted to the through hole formed in the filter fixing plate inside the dust collecting case, the bottom surface is in close contact with the upper surface of the filter cloth, and the flange is seated on the filter fixing plate to seal the through hole;

Venturi which is seated on the locking jaw in the center of the upper cap, the airtight sealing the mutual contact surface of the upper surface of the filter cloth and the upper cap when pressed by the pressing member,

It is mounted on the lower part of the filter cloth to remove dust accumulated at the lower part of the filter cloth by expanding the lower end of the filter cloth in the circumferential direction by the compressed air supplied to the upper end of the filter cloth by the dust removal means. It is achieved by providing a filter structure for a dust collector, characterized in that it has a lower cap formed and bonded.

According to a preferred embodiment, it is further provided with a retainer made of a compressed coil spring mounted on the inner surface of the filter cloth to support the above-described filter cloth, and to prevent deformation toward the filter cloth center.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings, which are intended to describe in detail enough to enable those skilled in the art to easily practice the invention, and therefore It does not mean that the technical spirit and scope of the present invention is limited.

As shown in Figures 4 to 7, the filter structure for the dust collector according to the present invention, the dust collecting inlet (1), the air outlet (2), the dust collecting case (3) on which the exhaust fan (4), the compressor Duster which is provided with a shearer 7 and a timer T, etc., and separates dust accumulated from the filter cloth 11 by compressed air supplied from the compressor 7 to the filter cloth 11 of the filter 5. In order to filter the dust contained in the outside air sucked into the dust collecting case 3 by the means 6 and the exhaust fan 4, the valley 10 is formed in the longitudinal direction so as to increase the dust collecting area. In the filter for dust collector comprising a filter cloth 11 formed with pleats,

The filter fixing plate is mounted on the through hole 16 formed in the filter fixing plate 15 inside the dust collecting case 3, and the bottom surface is in close contact with the upper surface of the filter cloth 11 and the flange 17 seals the through hole 16. An upper cap 12 seated on 15 (for example, a polyurethane material is used),

Venturi 19 is seated on the locking jaw (12a) in the center of the upper cap 12, the airtight (19) for sealing the mutual contact surface of the upper surface of the filter cloth 11 and the bottom of the upper cap 12 when pressed by the pressing member (18),

By passing the venturi 19 by the dedusting means 6, the lower end of the filter cloth 11 can be expanded in the circumferential direction by compressed air supplied to the upper end of the filter cloth 11 to remove dust accumulated at the bottom of the filter cloth 11. It is mounted to the lower end of the filter cloth 11, and has a lower cap 13, which is cut off in the circumferential direction to correspond to the shape of the pleated filter cloth 11 is bonded by the adhesive (20).

At this time, the filter cloth 11 is mounted on the inner surface of the filter cloth 11 to support the filter cloth 11, and further includes a retainer 14 made of a compressed coil spring to prevent the deformation toward the center of the filter cloth (11).

Hereinafter, a use example of the dust collector filter according to the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIG. 6, in the case where external air containing dust generated at a work site or the like is sucked into the dust collecting case 3 through the dust suction opening 1 due to the driving of the exhaust fan 4 described above, the filter fixing plate Dust is filtered by the filter cloth 11 of the filter 5 attached to 15, and the air from which the dust is filtered is discharged to the atmosphere through the air outlet 2.

When the dust collector is used for a long time and dust accumulates on the filter cloth 11, the compressed air discharged by the above-described dust extraction means 6 passes through the venturi 19 coupled to the upper cap 12 to filter the cloth ( The dust falling from the filter cloth 11 falls to the bottom of the dust collecting case 3 due to the instantaneous vibration, expansion or tremor of the filter cloth 11 (for example, formed of a nonwoven fabric, etc.) when supplied to the 11).

At this time, as the edge of the lower cap 13 mounted on the lower end of the filter cloth 11 is cut out to correspond to the shape of the filter cloth 11 circumferentially circumferentially adhered by the adhesive 20, the top of the filter cloth 11 When the compressed air is supplied to the filter cloth 11, the lower cap 13 attached to the bottom prevents the expansion or vibration interference of the filter cloth 11.

Therefore, the compressed air supplied downward to the filter cloth 11 upper part is suddenly expanded in the circumferential direction by the compressed air supplied downward, or the vibration generated in the filter cloth 11 lower end is amplified. 11) The dust on the outer surface of the lower part easily falls off.

As described above, when the compressed air is supplied to the filter cloth 11 by the dedusting means 6 to remove the accumulated dust on the filter cloth 11, the retainer 14 (compression) mounted on the inner surface of the filter cloth 11 is compressed. As the coil spring) swings in the vertical direction, it is possible to improve the dust removal efficiency of dropping dust from the filter cloth 11 by promoting vibration or vibration of the filter cloth 11.

Therefore, since dust is not accumulated in the filter cloth 11 and air is discharged smoothly, an overload occurs in a driving motor (not shown) for driving the exhaust fan 4 which is generated by accumulated dust in the filter cloth 11. And preventing the filter cloth 11 from being damaged by preventing supply of compressed air to the filter cloth 11 above the set pressure in order to increase the dust removal rate of the dust. Due to this dust is accumulated in the filter cloth 11 can reduce the after-care costs caused by frequent repair, replacement or breakage of the device.

On the other hand, after the upper cap 12 (for example, formed of a polyurethane material) is coupled to the through hole 16 of the filter fixing plate 15 installed in the dust collecting case 3, the locking jaw of the upper cap 12 ( When the venturi 19 seated on 12a is pressed by the pressing member 18, the use of a separate packing member is unnecessary as the through hole 16 is hermetically sealed by the flange 17 of the upper cap 12. At the same time, the bottom surface of the upper cap 12 can be airtight with respect to the upper surface of the filter cloth 11.

As described above, the dust collector filter structure according to the present invention has the following advantages.

In order to remove dust accumulated on the filter cloth by using the dust collector filter for a long time, it is possible to minimize the accumulation of dust at the bottom of the filter cloth by maximizing the expansion, vibration or vibration of the filter cloth when supplying compressed air from the outside to the filter cloth. The efficiency can be improved.

In addition, since the air is discharged smoothly from the filter cloth to prevent the load from being generated on the drive motor for the exhaust fan, it is possible to prevent damage to the corresponding device including the drive motor, and to remove dust accumulated on the filter cloth and replace it due to the breakage of the filter cloth. Minimization can reduce maintenance costs.

In addition, it is easy to manufacture the filter cloth, and the productivity is improved by mass production, thereby lowering the cost cost, thereby making it competitive in the industry, and easily replacing and removing the filter for the dust collector. can do.

Claims (2)

In a dust collector filter comprising a dust collecting case having an exhaust fan and a dust collecting means, and a filter cloth which filters dust contained in the outside air sucked into the dust collecting case and has a valley formed in the longitudinal direction and pleated in the circumferential direction: An upper cap mounted on a through hole formed in the filter fixing plate inside the dust collecting case, the bottom surface of the filter fixing plate being in close contact with the upper surface of the filter cloth, and the flange being seated on the filter fixing plate to seal the through hole; A venturi seated on a locking jaw at the center of the upper cap and sealing the mutual contact surface between the upper surface of the filter cloth and the upper cap when pressed by the pressing member; And It is mounted on the lower end of the filter cloth to remove dust accumulated at the lower end of the filter cloth by expanding the lower end of the filter cloth in the circumferential direction by the compressed air supplied to the upper end of the filter cloth by the dedusting means, the edge is circumferentially corresponding to the pleated filter cloth shape Dust collector filter structure characterized in that it has a lower cap to be bonded to form. The filter structure for a dust collector of claim 1, further comprising a retainer made of a compression coil spring mounted on an inner surface of the filter cloth to support the filter cloth, and to prevent deformation toward the filter cloth center.

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