JP2019089057A - Filter bag for dust collector - Google Patents

Abstract

To provide a filter bag for a dust collector being prevented from wear by reducing friction and uniformly holding pleats at expansion.SOLUTION: A filter bag for a dust collector includes: a filtration member 100 formed with bellow-folding being alternately folded with a pleat ridge 111 and a pleat valley 112 along a circumferential direction; a band member 200 disposed so as to surround the filtration member 100 on the outside surface of the filtration member in a circumferential direction and sewn on the pleat ridge 111 and the pleat valley 112; and a reinforcement member 300 being disposed at the pleat valley, positioning at the inside of the band member 200 and extending along the filtration member 100 in a longitudinal direction.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a filter bag for a dust collector.

  A dust collector is a kind of purification device that removes dust such as solid and liquid particles contained in air and gas (hereinafter referred to as "gas"), and after filtering the dust in the gas, it is further added indoors. It can be taken in or discharged to the outside.

  The dust collector may be provided with one or more dust collection filters (hereinafter referred to as "filter bag"), but the filter bag filters the dust and the like contained in the gas and purifies the gas. Make it available.

  Usually, in the filter bag, a retainer can be inserted in order to maintain the cylindrical shape inside the cylindrical filter cloth. Recently, in order to increase the dust collection efficiency, the filter cloth of the filter bag is repeatedly folded in the circumferential direction, and the surface area is increased by this method, thereby tying the both ends of the filter cloth with the fins together to form a cylindrical shape. Filter bag can be completed.

  On the other hand, since the filter bag is attached with dust to the filter cloth of the filter bag over time, the pressure drop of the filter bag rapidly increases, so air pulsing and vibration (Pulse pressure) using cyclic high pressure compressed air is generated. A dust removal operation is performed to remove dust adhering to the filter bag by a method such as shaking.

  In the dust removal operation by air pulsing, high pressure compressed air is injected from the upper end of the filter bag toward the inside of the bag through the injection pipe nozzle toward the inside of the bag to remove dust deposited by the shock wave of the compressed air How to

  Conventional dusted filter bags with fins are provided on the outer peripheral surface of the filter bag in order to prevent the compressed air from stretching too much or being unable to return to the fold during dust removal operation by air pulsing. An outer frame band made of fiber or metal is provided, and this outer frame band is fixed to two or more piles of folds according to the height of piles of folds among the respective parts, and the folds are removed become.

  However, in the conventional filter bag as described above, when the air pulsing operation is performed by compressed air, a part of the filter bag that is not fixed to the outer frame band causes friction with the outer frame band, resulting in premature wear of the filter bag. There was a problem of

  In addition, when dust falls from the upper part of the conventional filter bag, there is a problem that the outer frame band is broken due to friction or impact with the outer frame band.

  Also, in the conventional filter bag, since only the ridges of the folds are fixed to the outer frame band, the control for the expansion of the filter bag is not properly performed, causing wear due to contact with other adjacent filter bags. There was a problem.

  In addition, the conventional filter bag has a disadvantage that the expansion of the folds is uneven during the air pulsing operation with compressed air, since the piles of the folds are fixed to the outer frame band.

  Korean Patent Registration No. 10-1719469

  Embodiments of the present invention are for solving various problems of the conventional filter bag as described above, wherein the filter bag and the band are firmly fixed to reduce the friction, thereby the filter bag and the band. It is an object of the present invention to provide a dust collector filter bag which enhances the durability of the belt, prevents premature wear, and keeps the folds even when the filter bag is inflated.

  Another object of the present invention is to provide a filter bag for dust collectors in which distortion of the filter bag can be prevented by setting different directions of the folds sewn to a band. .

According to one embodiment of the present invention, there is provided a filtering member in which bellows folds having a form in which peaks and valleys of a fold are alternately repeated along the circumferential direction, and along an outer surface of the filtration member along the circumferential direction There is provided a filter bag for a dust collector, which is provided to surround the filtration member, and includes a band member which is sewn in the ridge of the fold and the valley of the fold.
The dust collector filter bag may further include a reinforcing member provided in a valley of the fold and located inside the band member and extending along the longitudinal direction of the filtering member.

  Moreover, the receiving part for the said reinforcement member to be inserted may be formed in the valley of the said fold.

  Also, the reinforcing member may be a cylindrical string (piping string) or a band-like cloth.

  Also, a plurality of the band members may be provided, and may be spaced along the longitudinal direction of the filtration member.

  Further, in the plurality of band members, the band members may be sewn to the filtration member such that the folds sewn to the adjacent band members are reverse to each other in the folding direction. .

On the other hand, according to another embodiment of the present invention, a plurality of filtration members in which bellows folds having a form in which peaks and valleys of a fold are alternately repeated along a circumferential direction, and an outer surface of the filtration member To connect the plurality of filter members and a band member sewn to the ridges of the folds and the valleys of the folds along the circumferential direction of the filter members. And a connecting bag sewn to the boundary portion, to obtain a filter bag for a dust collector.
The dust collector filter bag may further include a reinforcing member provided in a valley of the fold and located inside the band member and extending along the longitudinal direction of the filtering member.

  Here, the connection band includes an outer band which is corrected to the outside of the filtration member, and an inner band which is sewn to the inside of the filtration member.

  Moreover, the receiving part for the said reinforcement member to be inserted may be formed in the valley of the said fold.

  Also, a plurality of the band members may be provided, and may be spaced along the longitudinal direction of the filtration member.

  Further, in the plurality of band members, the band members may be sewn to the filtration member such that the folds sewn to the adjacent band members are opposite to each other in the folding direction. it can.

  According to an embodiment according to the present invention, the filter bag and band are made more durable by securing all the crimps and bands of the filter bag to reduce friction, and premature wear or banding of the filter bag can be achieved. It can be prevented.

  In addition, according to an embodiment of the present invention, in the air pulsing operation, it is possible to prevent the filter bag from being excessively expanded, to uniformly expand the upper and lower portions of the filter bag, and to return the fold after the pulse operation. it can.

  Further, according to the embodiment of the present invention, it is possible to prevent the distortion of the filter bag by making the directions of the folds sewn to the band-like band member different from each other.

FIG. 1 is a perspective view schematically showing a dustproof filter bag according to a first embodiment of the present invention. FIG. 2 is a cross-sectional plan view taken along line AA of FIG. FIG. 3 is a cross-sectional plan view taken along the line B-B of FIG. FIG. 4 is a plan sectional view taken along the line C-C in FIG. FIG. 5 is a plan sectional view showing another embodiment of the reinforcing member. FIG. 6 is a plan sectional view showing another embodiment of the reinforcing member. FIG. 7 is an exploded perspective view schematically showing a dustproof filter bag according to a second embodiment of the present invention. FIG. 8 is a combined perspective view of FIG. FIG. 9 is a longitudinal sectional view taken along the line D-D.

  In the following, the construction and operation according to embodiments of the present invention will be described in detail with reference to the accompanying drawings. The following description is one of the various claimed aspects of the present invention, and the following description may form part of a detailed description of the present invention.

  However, when describing the present invention, specific descriptions of known configurations or functions may be omitted to clarify the present invention.

  Since the present invention can be variously modified and can include various embodiments, specific embodiments are shown in the drawings and described herein. However, this is not to be construed as a limitation on the specific embodiments and is to be understood as including any and all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

  Although terms including ordinal numbers such as first and second are used to describe various components, the components are not limited by such terms. The term is only used to distinguish one component from another.

  Where a component is described as "connected" or "connected" to another component, it may be directly connected to or connected to the other component. However, it should be understood that there may be other components between them.

  The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular expression also includes the plural, unless the context clearly indicates otherwise.

  Hereinafter, a filter bag for dust collectors according to a first embodiment of the present invention will be described with reference to the attached drawings.

  Referring to FIG. 1, the dust collector filter bag 10 according to the first embodiment of the present invention may include a filtering member 100, a band member 200, and a reinforcing member 300.

  The meaning that one embodiment of the present invention includes the above-mentioned configuration does not mean that it consists only of these configurations, but it also means that it basically includes these configurations, and other configurations (for example, for example) Although the term "well-known technology well known in the field of filter bags for dust collectors" can be included, the detailed description of the known art is omitted because it may obscure the gist of the present invention.

  The filtration member 100 is a cloth used as a material of a dust collection filter, and the filtration member 100 is formed by folding continuously in a manner such that it has a predetermined pitch along the circumferential direction. Can be provided.

  The fold 110 is composed of a pile 111 of the fold and a valley 112 of the fold, and the fold 110 is formed by alternately repeating the pile 111 of the fold and the valley 112 of the fold along the circumferential direction X of the filtration member 100. Can.

  Here, the mountain 111 of the fern means a fold located at a relatively high position in the fold 110, and the valley 112 of a fold means a fold located at a relatively lower place in the fold 110 .

  In addition, since the folds 110 may be arranged to have a direction (hereinafter referred to as a “fold direction”) to be folded in a specific direction in the circumferential direction of the filtering member 100, the folds 110 have a fold direction. The reason for the arrangement will be described later.

  In the filter bag 10 for dust collectors according to the present embodiment, as shown in FIG. 2, the filter member 100 may be provided in a cylindrical shape so that the retainer 90 is inserted inside the filter member 100. The idea is not limited to this, and its shape can be changed appropriately as needed.

  The filtration member 100 is a needle punched thermoplastic resin such as FE, PP, PPS, NOMEX, PTFE (polytetrafluoroethylene), etc. at high temperature (180 ° C. to 260 ° C.) or normal temperature (120 ° C. or less) A non-woven fabric produced or a glass fiber produced by a weaving method or a fiber material subjected to a special surface treatment may be used. Here, the fold shape of the filtration member 100 can be formed using a fold processing machine or the like widely known in the technical field.

  For reference, non-woven fabrics are in the form of intertwined fibers by using a short fiber or a long fiber by a wet process, spun bond, spun lace, calender bond, needle punch etc. (FET), acrylic (acrylic), polypropylene (PP), for high temperature, PA (polyamide), PI (polyimide), PAI (polyamide iodide), PPS (polyphenylene sulfide), PSA (polysulfonamide) It is possible to select one or more from the group consisting of glass fibers which are PTFE (polytetrafluoroethylene) or textiles.

  On the other hand, the band member 200 is an element provided on the outer surface of the filter member 100 in a band shape surrounding the filter member 100 along the circumferential direction X of the filter member 100, and the band member 200 stretches as necessary. It can be made of an elastic material. Thus, the band member 200 supports the reinforcing member 300 even when the filtering member receives an external force, thereby protecting the folds so that they can be restored to the original fold shape.

  Specifically, the band member 200 provides a structure surrounding the outer peripheral surface of the filtration member 100 along the circumferential direction. When the band member 200 is fixed to the filter member 100, the band member 200 can be sewn with the folds 110 as a whole since it is sewn uniformly (return stitch) to the ridges 111 of the folds and the valleys 112 of the folds. At this time, the band member 200 may be sewn to the peak 111 of the fold and the valley 112 of the fold with the fold 110 folded in a predetermined direction.

  Therefore, in the filter bag 10 according to the present embodiment, since the band member 200 is sewn uniformly on all of the folds 110 and the sewing lines 210 along the circumferential direction on the outer circumferential surface of the filter member 100, the band member 200 is the filter member 100. Thus, the filter member 100 can be fixed in close contact with the filter member 100 without any gap.

  As a result, when performing dust removal operation by air pulsing (air pulsing), it is possible to solve the problem that the conventional band is cut by the weight of dust, the problem that the filter bag is worn prematurely by friction, etc. By uniformly supporting the entire filter bag when inflated, the folds expand uniformly and the dust removal performance of the filter bag is improved.

  Further, as shown in FIG. 1, a plurality of band members 200 can be provided in order to increase the local rigidity of the filter member 100 and to maintain the shape of the folds and to protect the folds.

  When a plurality of band members 200 are provided, they can be arranged at predetermined intervals along the longitudinal direction Y of the filtering member 100.

  The plurality of band members 200 may be disposed at regular intervals along the longitudinal direction Y of the filtering member 100, but may be disposed at non-uniform intervals if necessary.

  Here, the width of the band member 200 can be set to about 20 to 40 mm, and the interval between the plurality of band members is about 400 to 1000 mm in consideration of the pressure of pulse air and the concentration / characteristic of dust. It can be set.

  On the other hand, when the band members 200 are arranged along the longitudinal direction of the filter member 100, the folding directions of the folds 110 of the folds 110 sewn on the two adjacent band members 200 are shown in FIG. 3 and FIG. As such, the band members 200 may be sewn to the filtering member 100 in opposite directions.

  Therefore, as shown in FIG. 3, if the fold direction of the fold 110 sewn on any one of the band members 200 (for convenience, referred to as “first band member”) is folded to the left, for example, as shown in FIG. As shown in FIG. 4, the folds 110 sewn to a band member 200 (for convenience referred to as a "second band member" for convenience) adjacent to (arranged just beside) the first band member 200 are folded. Direction is folded on the right.

  The reason for setting the folding directions of the folds 110 to be sewn to each of the two adjacent band members 200 in this manner to be opposite is that the motive force acting opposite to each other during the air pulsing operation causes the filtering member 100 to This is to prevent distortion.

  For example, if the folding direction of each fold 110 is the same, the filtering member 100 may be twisted in the folding direction of the fold 110 by air pressure of high pressure at the time of dust removal work, and the filtration member 100 may be distorted overall. As in the present embodiment, if the belt members 200 adjacent to each other in the folding direction of the folds 110 are set to be in the opposite direction, the distortion rigidity of the filtration member 100 is increased, and the filtration is performed even in the high pressure air pulsing operation. The phenomenon of distortion of the member 100 can be prevented. For reference, if the filter member 100 is distorted and the folds 110 are inclined, when the dust is removed, the sloped folds interfere with the removal of dust, and the dust causes friction and the life of the cloth may be shortened due to wear. .

  On the other hand, as shown in FIGS. 2 to 4, the reinforcing member 300 is a component provided in the valley 112 of the fold of the filtering member 100. The reinforcing member 300 is located inside the band member 200 and extends along the longitudinal direction Y of the filtering member.

  The reinforcing member 300 imparts support rigidity to the valley 112 of the fold so that the filtering member 100 can hold the form of the fold for a long time.

  Further, when the valley 112 of the fold is pushed outward of the filter member 100 by the high pressure air during the air pulsing operation, the reinforcement member 300 provided in the longitudinal direction in the valley 112 of the fold locks to the band member 200, but the reinforcement member By means of 300, it is possible to prevent the band member 200 and other portions of the filtration member 100 not being sewn from being excessively expanded. Further, after the air pulsing operation is completed, the reinforcing member 300 can easily return the valleys 112 of the fold to the original state (the original position).

  As shown in FIG. 2, the receiving portion 112 a may be formed in the vicinity of the fold valley 112 of the filtration member 100 so that the reinforcing member 300 is provided in the fold valley 112. Since the receiving space for receiving the reinforcing member 300 may be formed in the receiving portion 112a, the receiving portion 112a may be formed by sewing at one side portion of the valley 112 of the fold.

  Here, the reinforcing member 300 is formed of a columnar cord (piping cord) or a band-like cloth and is formed to have a length corresponding to the entire length of the filtration member 100 as illustrated in the circle of FIG. It can be done.

  That is, although the reinforcing member can be formed of a cylindrical string, unlike this, the cloth of the filtering member 100 is cut into a band shape and adhered or fused to the valley 112 of the fold, the valley of the fold is formed. It is also possible to improve the bearing capacity of 112 and to reinforce the folds.

  Therefore, when the reinforcing member 300 is provided in the valley 112 of the fold, the reinforcing member 300 is positioned inside the band member 200 to hold the fold shape of the filtration member 100, and the valley 112 of the fold is expanded outward during the air pulsing operation. In this case, the reinforcing member 300 is captured by the band member 200, and the whole of the valleys 112 of the folds are longitudinally supported, thereby preventing the valleys 112 of the folds from being excessively expanded to the outside of the band member 200, When the air pulsing operation is finished, the valleys of the folds will be restored.

  On the other hand, as shown in FIG. 5 according to another embodiment of the present invention, the reinforcing member 300 is a reinforcing cloth provided over the entire outside of the valleys 112 so as to surround the entire outside of the valleys 112. It can be configured. At this time, the reinforcing member 300 is applied to the entire outer side of the valley 112 of the fold and sewn to the valley 112 of the fold through the sewing line, whereby the valley 112 of the fold can be reinforced.

  Also, the reinforcing member 300 is a reinforcing cloth provided on a part of the outside of the trough 112 of the fold to surround a part of the outside of the trough 112 of the fold according to another embodiment of the present invention, as shown in FIG. It can be configured. At this time, the reinforcing member 300 is applied to only a part of the outside of the valley 112 of the fold and sewn to the valley 112 of the fold through the sewing line, whereby the valley 112 of the fold can be reinforced.

Hereinafter, with reference to FIGS. 7-9, the filter bag for dust collectors by 2nd Embodiment of this invention is demonstrated.
As shown in FIG. 7, in the second embodiment of the present invention, a filtration member 100 having a limited length is connected to another filtration member 100 to produce a filter bag 20 longer than the length of one filtration member. In order to manufacture the filter bag 20 which is longer than the length of one filtration member 100, the filtration member 100 usually has a fixed length. There is a need to.

  Therefore, the dustproof filter bag 20 according to the second embodiment of the present invention includes a plurality of filter members 100, a band member 200, a reinforcing member 300, and a connection band 400.

  At this time, the filtering member 100, the band member 200, and the reinforcing member 300 have the same configuration and structure as those of the first embodiment described above, and thus detailed description thereof will be omitted. However, in the second embodiment of the present invention, two or more filtration members 100 may be used.

  Hereinafter, the connecting band 400 will be described.

  The connection band 400 is provided to connect a plurality of filtration members to each other, and as shown in FIGS. 7 and 8, the plurality of filtration members 100 are arranged to extend in the longitudinal direction. In this state, the sewing line 401 may be sewn to the boundary between adjacent filtration members 100 to connect the plurality of filtration members 100 to each other.

  At this time, only one connecting band 400 may be provided on the outer surface of the plurality of filtration members 100, but may be provided on each of the outer surface and the inner surface in order to improve the bonding force of the plurality of filtration members. it can.

  Specifically, as shown in FIG. 9, the connecting band 400 includes an outer band 410 and an inner band 420.

  The outer band 410 may be disposed outside the boundary between adjacent filter members 100, may be sewn to each of the plurality of filter members 100, and may connect the adjacent filter members 100 to each other on the outside.

  In addition, the inner band 420 may be disposed inside the boundary between adjacent filter members 100, may be sewn to each of the plurality of filter members 100, and may connect the adjacent filter members 100 to each other on the inside.

  Here, FIG. 9 is a cross-sectional view (line D-D in FIG. 8) in which a plurality of filtration members 100 are cut in the longitudinal direction in order to show the coupling structure of the filtration member 100 and the outer band 410 and the inner band 420. In the structure in which the connecting band 400 is basically sewn to the filter member 100, the inner band 420 is further provided to the structure in which the band member 200 described in the first embodiment is sewn to the filter member 100. It is identical to

  As described above, when the filter members 100 having a limited length are connected to each other by the connecting band 400, the filter bag 20 longer than the length of one filter member 100 can be manufactured.

  Although the present invention has been described above using the preferred embodiments, the scope of rights of the present invention is not limited to the specific embodiments described, and anyone who has ordinary knowledge in the relevant technical field is able to use the present invention. This also belongs to the scope of the present invention, since various components can be substituted or changed within the scope of the present invention.

Reference Signs List 100 filter member 110 folds 111 folds of piles 112 valleys of folds 112a receiving portion 200 band member 210 sewing line 300 reinforcing member 400 connecting band 410 outer band 420 inner band

Claims (16)

A filtering member in which bellows folds are formed along the circumferential direction in which piles of ridges and valleys of ridges are alternately repeated;
A band member provided along the circumferential direction so as to surround the outer surface of the filter member and sewn to the peaks of the folds and the valleys of the folds;
Filter bag for dust collectors characterized by including.   The dust collector filter bag according to claim 1, further comprising a reinforcing member provided in a valley of the fold and extending along a longitudinal direction of the filtering member.   The filter bag for dust collectors according to claim 2, wherein a receiving part for inserting said reinforcement member is formed in a valley of said fold.   The filter bag for dust collectors according to claim 2, wherein the reinforcing member is formed of a cylindrical string or a band-like cloth. The filter bag for the dust collector according to claim 1, wherein the band member is sewn to a peak of the fold and a valley of the fold in a state where the fold is folded in a predetermined direction.   The dust collector filter bag according to claim 1, wherein a plurality of the band members are provided and are separated along the longitudinal direction of the filtering member.   The said band member is sewn on the said filtration member so that the folding direction may become mutually reverse direction, as for the said fold sewn to each of any two adjacent belt members among several said belt members The filter bag for the dust collector according to claim 6, characterized in that.   The filter bag for a dust collector according to claim 2, wherein the reinforcing member comprises a reinforcing cloth provided on the entire outside of the valley of the fold so as to surround the entire outside of the valley of the fold. .   The dust collection device according to claim 2, wherein the reinforcing member comprises a reinforcing cloth provided on a part of the outside of the valley of the fold so as to surround the part of the outside of the valley of the fold. Filter bag. A plurality of filtration members in which bellows folds having a form in which piles of ridges and valleys of ridges are alternately repeated along the circumferential direction;
A band member provided along the circumferential direction so as to surround the outer surface of the filtration member, and sewn in the ridges of the folds and the valleys of the folds;
A connecting band sewn at a boundary of the filter members to connect the plurality of filter members to each other;
Filter bag for dust collectors characterized by including.   11. The dust collector filter bag according to claim 10, further comprising a reinforcing member provided in a valley of the fold and extending along a longitudinal direction of the filtering member.   The dust collector filter bag according to claim 10, wherein the connection band includes an outer band sewn to the outside of the filter member and an inner band sewn to the inner side of the filter member. .   The dust collector filter bag according to claim 11, wherein a receiving portion for inserting the reinforcing member is formed in a valley of the fold.   The filter bag for the dust collector according to claim 10, wherein the band member is sewn to a peak of the fold and a valley of the fold in a state where the fold is folded in a predetermined direction.   11. The dust collector filter bag according to claim 10, wherein a plurality of the band members are provided and spaced along the longitudinal direction of the filtration member.   The said band member is sewn on the said filtration member so that the folding direction may become mutually reverse direction, as for the said fold sewn to each of any two adjacent belt members among several said belt members The filter bag for a dust collector according to claim 15, characterized in that.