PH12017000174A1 - Filter for dust collector and method for manufacturing filter bag for dust collector - Google Patents
Filter for dust collector and method for manufacturing filter bag for dust collector Download PDFInfo
- Publication number
- PH12017000174A1 PH12017000174A1 PH12017000174A PH12017000174A PH12017000174A1 PH 12017000174 A1 PH12017000174 A1 PH 12017000174A1 PH 12017000174 A PH12017000174 A PH 12017000174A PH 12017000174 A PH12017000174 A PH 12017000174A PH 12017000174 A1 PH12017000174 A1 PH 12017000174A1
- Authority
- PH
- Philippines
- Prior art keywords
- adhesive agent
- portions
- filter bag
- inner bent
- bent portions
- Prior art date
Links
- 239000000428 dust Substances 0.000 title claims abstract description 42
- 238000000034 method Methods 0.000 title claims description 38
- 238000004519 manufacturing process Methods 0.000 title claims description 25
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 30
- 239000000853 adhesive Substances 0.000 claims description 91
- 239000004744 fabric Substances 0.000 claims description 50
- 238000002844 melting Methods 0.000 claims description 18
- 230000008018 melting Effects 0.000 claims description 18
- 239000000463 material Substances 0.000 claims description 16
- 239000002344 surface layer Substances 0.000 claims description 12
- 229920001187 thermosetting polymer Polymers 0.000 claims description 12
- 239000003795 chemical substances by application Substances 0.000 claims description 10
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims description 6
- 239000004831 Hot glue Substances 0.000 claims description 6
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 6
- 229920006332 epoxy adhesive Polymers 0.000 claims description 6
- 229920002635 polyurethane Polymers 0.000 claims description 6
- 239000004814 polyurethane Substances 0.000 claims description 6
- 229910052710 silicon Inorganic materials 0.000 claims description 6
- 239000010703 silicon Substances 0.000 claims description 6
- 230000001070 adhesive effect Effects 0.000 claims description 4
- 238000003825 pressing Methods 0.000 claims description 3
- 240000005369 Alstonia scholaris Species 0.000 claims 1
- 230000008569 process Effects 0.000 description 16
- 238000009958 sewing Methods 0.000 description 9
- 239000004698 Polyethylene Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- -1 polyethylene Polymers 0.000 description 4
- 239000004810 polytetrafluoroethylene Substances 0.000 description 4
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 4
- 230000002028 premature Effects 0.000 description 4
- 239000004734 Polyphenylene sulfide Substances 0.000 description 3
- 239000004743 Polypropylene Substances 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 229920000069 polyphenylene sulfide Polymers 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 2
- 229920000784 Nomex Polymers 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000004763 nomex Substances 0.000 description 2
- 239000004745 nonwoven fabric Substances 0.000 description 2
- 239000002861 polymer material Substances 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 229920005992 thermoplastic resin Polymers 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/52—Particle separators, e.g. dust precipitators, using filters embodying folded corrugated or wound sheet material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/14—Other self-supporting filtering material ; Other filtering material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/02—Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
- B01D46/023—Pockets filters, i.e. multiple bag filters mounted on a common frame
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2201/00—Details relating to filtering apparatus
- B01D2201/12—Pleated filters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
- B01D2239/08—Special characteristics of binders
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
- B01D2239/10—Filtering material manufacturing
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
- Filtering Materials (AREA)
Abstract
A filter for a dust collector includes a pleated filter bag in which inner bent portions and outer bent portions are alternately formed, a plurality of support reinforcing portions formed by compressing a part of tip portions of the inner bent portions, and a retainer disposed inside the filter bag so as to make contact with the support reinforcing portions.
Description
. , conventional reinforcing fabric for an inner bent portion.
It 1s therefore possible to simplify the process for i. manufacturing the filter bag used in the filter for a dust ) . collector and to effectively reduce the manufacturing time. =
Further, it is possible to manufacture the filter bag by unskilled workers. Ee
In addition, according to the present disclosure, the - reinforcing fabric for an inner bent portion used in the - conventional filter for a dust collector is eliminated. It is therefore possible to effectively prevent unnecessary consumption of a fabric (pleat fabric) for a filter bag.
Fig. 1 is a schematic perspective view of a filter for a dust collector according to the present disclosure, schematically showing the tubular shape of a filter bag.
Fig. 2 is a horizontal sectional view taken along line
A-A in Fig. 1.
Fig. 3 1s a flowchart showing a major process of manufacturing a filter bag for use in a filter for a dust collector according to one embodiment of the present disclosure.
Fig. 4 41s a flowchart showing a major process of manufacturing a filter bag for use in a filter for a dust collector according to another embodiment of the present _T
C v : disclosure. -
Fig. 5A is an exemplary photograph showing a melting ~ device for melting a tip portion of an inner bent portion - according to the present disclosure.
Fig. 5B is an exemplary photograph for explaining a ol principle that a fabric is aligned and pushed toward the melting device by a pair of feed rollers according to the : present disclosure. ‘
Fig. 5C is an exemplary photograph showing a structure in which a pair of movable rollers is mounted to the rear end of the melting device according to the present disclosure.
Fig. 5D is a schematic diagram for explaining a principle that a melted tip portion of the inner bent portion 1s compressed using the pair of movable rollers according to the present disclosure.
Figs. 6A and 6B are partial schematic diagrams for explaining an adhesive agent supply device for supplying an adhesive agent to the tip portion of the inner bent portion according to the present disclosure.
Fig. 7A 1s a schematic diagram showing a compressing device for compressing the tip portion cf the inner bent portion supplied with the adhesive agent according to the present disclosure.
Fig. 7B is an exemplary sectional view showing a structure in which the tip portion of the inner bent portion
¢ yl . supplied with the adhesive agent is transformed into a ~ bonded support portion having a bonded and compressed form. - DETAILED DESCRIPTION
Advantages and features of the present disclosure and j methods to achieve them will become apparent from the descriptions of exemplary embodiments hereinbelow with reference to the accompanying drawings. However, the present disclosure is not limited to exemplary embodiments disclosed herein but may be implemented in various different ways. The exemplary embodiments are provided for making the disclosure of the present disclosure thorough and for fully conveying the scope of the present disclosure to those skilled in the art. It is to be noted that the scope of the present disclosure is defined only by the claims.
Detailed descriptions of well-known functions and structures incorporated herein will be omitted to avoid obscuring the subject matter of the present disclosure.
Further, the following terminologies are defined in consideration of the functions in the present disclosure and may be construed in different ways by the intention of users and operators. Therefore, the terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and/or the present
. , applicaticn. -
Hereinafter, preferred embodiments of the present ~ disclosure will now be described in detail with reference to - the accompanying drawings. i.
Fig. 1 is a schematic perspective view of a filter for ol a dust collector according to the present disclosure, oo schematically showing the tubular shape of a filter bag. ~
Referring to Fig. 1, the filter for a dust collector - according to the present disclosure may have a structure in which a filter bag 110 having a pleat is provided in a tubular shape and a retainer 120 is inserted inside the filter bag 110 so as to maintain the shape of the filter bag 110 when filtering dust. In this regard, the filter bag 110 may be defined as a filter bag manufactured according to the present disclosure.
In this case, the filter bag 110 and the retainer 120 need not necessarily be tubular. The shape of the filter bag 110 and the retainer 120 may be changed depending on the necessity and application therecf. In the filter bag 110, a { support reinforcing portion may be formed in an inner tip of an inner bent portion. On this point, description will be made later with reference to Fig. 2.
As the material of the filter bag 110 (the material of a pleat fabric), it may be possible to use a nonwoven fabric material made of a thermoplastic resin such as, for example, a polymer material (e.qg., PE (polyethylene), PP
(polypropylene), PPS (polyphenylenesulfide), NOMEX (registered trademark; polyaramide), PTFE (polytetrafluoroethylene) or the like). In addition, as the . material of the filter bag, glass fiber may be used. In = this regard, the pleat shape of the filter bag 110 may be formed by a pleat maker well-known in the art.
Fig. 2 is a horizontal sectional view taken along line
A-A in Fig. 1, showing a structure in which a support 5 reinforcing portion is formed only in an inner tip of an inner bent portion of the pleat shape.
Referring to Fig. 2, the filter for a dust collector according to the present invention may have a structure in which an inner bent portion 111 making contact with the retainer 120 is formed in the filter bag 110 having a pleat shape and in which an outer bent portion 117 is formed in the filter bag 110 on the side opposite to the inner bent portion 111.
The inner bent portion 111 and the outer bent portion 117 may be defined as an inner folding portion and an outer folding portion. In the tip portion of the inner bent portion 111 (melting part), there may be formed a support reinforcing portion 1l1la as a compressed region. For example, the support reinforcing portion 1llla is formed by being crimped by a roller pair (e.g., a roller pair including a pair of fixed roller and movable roller or a pair of movable rollers).
. .
In this regard, the support reinforcing portion 1llla o may have a length of about 1 to 10 mm and may be defined as a fused support portion or a bonded support portion o . depending on the manufacturing method used. When the filter bag is assembled with the filter for a dust collector, the - support reinforcing portion 1lla may make contact with the - retainer 120 disposed inside the filter bag 110. -
As an example, when the support reinforcing portion - l1l1la is manufactured by a method in which the surface layer . of the inner tip of the inner bent portion 111 having a pleat shape is melted by a hot air blown through a hot air nozzle (in the case of e.g., PE, it is initially softened at a temperature of 80°C or more and melted in the form of rubber at a temperature of 140°C or more so as to have a viscosity) and is compressed by the roller pair, the support reinforcing portion 1lla may be defined as a fused support portion having a melted and compressed shape. In this regard, the hot air blown through the hot air nozzle may have a temperature of, for example, 140°C to 350°C.
As another example, when the support reinforcing portion 1lla is manufactured by a method in which an adhesive agent is supplied (coated) on the inner tip of the inner bent portion 111 having a pleat shape (on a part of an inner region) and the inner tip of the inner bent portion 111 is compressed by a roller pair (e.g., a roller pair including a pair of fixed roller and movable roller or a
. . pair of movable rollers), the support reinforcing portion » ll1la may be defined as a bonded support portion. In this regard, the adhesive agent may be a thermosetting adhesive B : agent or a UV-curable adhesive agent. It may be possible to use, for example, one of a hot-melt adhesive agent, an ~ acrylate adhesive agent, a urethane adhesive agent, an epoxy - adhesive agent, a polyurethane-based adhesive agent and a . silicon-based adhesive agent. ~
Next, a series of processes of manufacturing a filter bag that can be applied to the filter for a dust collector of the present disclosure having the structure described above will be described in detail.
Fig. 3 is a flowchart showing a major process of manufacturing a filter bag for use in a filter for a dust collector according to one embodiment of the present disclosure.
Referring to Fig. 3, for example, a fabric for a filter bag in which inner bent portions and outer bent portion are alternately disposed 1s manufactured by performing a pleat-making process with respect to a fabric using a pleat maker or the like (Step 302). Thereafter, the fabric for a filter bag (pleat fabric) is cut into a suitable size (having, for example, 20 to 50 pleats) (Step 304).
Thereafter, the pleated fabric (the pleat fabric) for a filter bag is set in an inflow port of a conveyer-belt-
type filter bag manufacturing device. Then, if the filter bag manufacturing device is operated, the fabric for a ~ filter bag is conveyed toward a melting device 1in response - to the operation of a conveyer belt (Step 306). +
For example, as shown in Figs. 5A to 5C, the melting device may include a plurality of linear fixing members 504 for fixing the lower portion of the pleat fabric, and a pair of feeding rollers 506a and 506b having a function (role) of . feeding and aligning the pleat fabric. A plurality of hot air nozzles 508 corresponding in number to the linear fixing members 504 may be disposed to the respective linear fixing members 504 along a line. A pair of movable rollers 510a and 510b having a function of compressing a tip portion of an inner bent portion 111 of a fabric 502 for a filter bag (a melted tip portion of a surface layer of a base material) may be mounted to the rear end portion of the melting device.
Thus, the hot air blown from the hot air nozzles 508 is ejected to the inside of the tip portion 512 of the inner bent portion 111 of the fabric 502 for a filter bag conveyed by the conveyer belt toward the melting device, whereby the surface layer of the base material in the tip portion 512 is momentarily melted (softened) (Step 308).
In this regard, the material of the fabric 502 for a filter bag may be a polymer material, for example, a nonwoven fabric material made of a thermoplastic resin such as PE, PP, PPS, NOMEX, PTFE (polytetrafluoroethylene) or the like. The hot air blown toward the inner tip portion 512 of . the inner bent portion through the hot air nozzles 508 may - have a temperature of, for example, 140°C to 350°C. .
As an example, when it is assumed that PE is used as > the fabric 502 for a filter bag, the surface layer in the tip portion 512 is initially softened at a temperature of . 80°C or more and then gradually softened. Under a temperature condition of 140°C or more, the surface layer is melted to have a viscosity.
If the fabric 502 for a filter bag is moved toward the compressing device in a state in which the surface layer in the tip portion 512 of the inner bent portion is melted, for example, as shown in Fig. 5D, the melted surface layer of the base material at the tip portion 512 is compressed by a roller pair of the compressing device, for example, a roller pair including a pair of movable rollers 510a and 510b operated by the power provided from a motor or the like (Step 310), whereby a fused support portion, which has been melted and compressed, is formed (the tip portion is transformed into the fused support portion).
As an example, as shown in Fig. 5D, the compressing device may include the movable rollers 510a and 510b. The movable rollers 510a and 510b have not only a function of compressing and welding the tip portion where the surface layer of the base material is melted by the hot air (with a force of, for example, 20 kgf to 100 kgf) but also a function (role) of advancing (feeding) the fabric for a filter bag in order to perform a continuous melting and compressing work. }
In this case, it is preferred that the movable rollers 510a and 510b provided in the compressing device are configured to variably move depending on the type and thickness of the pleat fabric and the number of pleats.
Thereafter, by repeatedly performing the melting and - compressing work a required number of times, the fused support portions, which has been melted and compressed, are formed in the tip portions of all the inner bent portions of the fabric for a filter bag (Step 312).
Accordingly, in the filter for a dust collector to which the filter bag manufactured according to the present disclosure is applied, the fused support portion having a melted and compressed form is formed through the process of melting and compressing the tip portion of the inner bent portion of the filter bag. It is therefore possible to maintain the rigidity of the filter bag having a pleat shape for a long period of time and to effectively suppress the premature damage of the inner bent portion due to its frequent contact with the retainer inserted inside the filter bag at the time of dust collection.
There has been described an example in which the melting device of the present embodiment includes four linear fixing members and four hot air nozzles corresponding thereto. However, this 1s nothing more than one example - presented for the sake of convenience in description and - increased understanding. The present disclosure is not . limited thereto. It goes without saying that depending on the necessity and application, several tens or hundreds - linear fixing members and hot air nozzles may be mounted on -- the melting device.
Fig. 4 is a flowchart showing a major process of ~ manufacturing a filter bag for use in a filter for a dust collector according to another embodiment of the present disclosure.
Referring to Fig. 4, for example, a fabric 702 for a filter bag in which inner bent portions and outer bent portion are alternately disposed is manufactured by performing a pleat-making process with respect to a fabric using a pleat maker or the like (Step 402). Thereafter, the fabric for a filter bag (pleat fabric) is cut into a suitable size (having, for example, 20 to 50 pleats) (Step 404)
Thereafter, the pleated fabric (pleat fabric) for a filter bag is set in an inflow port of a conveyer-belt-type filter bag manufacturing device. Then, if the filter bag manufacturing device is operated, the fabric for a filter bag is conveyed toward an adhesive agent supply device in response to the operation of a conveyer belt (Step 406).
For example, as shown in Figs. 6A and 6B, the adhesive
= agent supply device may include a pleat fabric support table .. 604 configured to support a fabric 602 for a filter bag, a i. pressing member 606 configured to press the fabric 602 for a filter bag against a valley between adjoining ridges of the pleat fabric support table 604, and an adhesive agent ejector 608 configured to supply an adhesive agent to an inner tip portion of an inner bent portion of the fabric 602 for a filter bag. -
Specifically, an adhesive agent, for example, a thermosetting adhesive agent or a UV-curable adhesive agent, ejected (discharged) from the adhesive agent ejector 608 is supplied (coated) onto the tip portion of the inner bent portion of the fabric 602 for a filter bag conveyed by the conveyer belt and introduced toward the adhesive agent supply device (Step 408). In this regard, as the thermosetting adhesive agent or the UV-curable adhesive agent, it may be possible to use one of a hot-melt adhesive agent, an acrylate adhesive agent, a urethane adhesive agent, an epoxy adhesive agent, a polyurethane-based adhesive agent and a silicon-based adhesive agent.
If the fabric 602 for a filter bag is moved toward the compressing device in a state in which the adhesive agent is supplied to the tip portion of the inner bent portion, the tip portion is compressed by a roller pair of the compressing device, for example, a roller pair including a pair of movable rollers 704a and 704b (Step 410), whereby a bonded support portion 706 is formed (the tip portion is - transformed into a bonded support portion 706). B
As an example, as shown in Figs. 7A and 7B, the compressing device may include a pair of movable rollers = 704a and 704b. The movable rollers 704a and 704b have not only a function of compressing and bonding the tip portion to which the adhesive agent (thermosetting adhesive agent or :
UV-curable adhesive agent) is supplied (with a force of, for example, 20 kgf to 100 kgf) but also a function (role) of advancing (feeding) the fabric 702 for a continuous adhesive~agent supplying and compressing work.
Fig. 7A is a schematic diagram showing the compressing device for compressing a tip portion of an inner bent portion supplied with an adhesive agent according to the present disclosure. Fig. 7B is an exemplary sectional view showing a structure in which the tip portion of the inner bent portion supplied with an adhesive agent is transformed into the bonded support portion.
In this case, it 1s preferred that the movable roller 704b provided in the compressing device are configured to variably move depending on the type and thickness of the pleat fabric and the number of pleats.
Accordingly, in the filter for a dust collector to which the filter bag manufactured according to the present disclosure is applied, the bonded support portion 706 is formed through the process of supplying an adhesive agent to
. . the tip portion of the inner bent portion of the filter bag = and compressing the same. It is therefore possible to maintain the rigidity of the filter bag having a pleat shape for a long period of time and to effectively suppress the premature damage of the inner bent portion due to its » frequent contact with the retainer inserted inside the = filter bag at the time of dust collection.
Then, the fabric 702 for a filter bag is moved toward a curing device (not shown) in a state in which the tip portion of the inner bent portion is bonded by the adhesive agent. The curing device performs a curing process of curing the adhesive agent (Step 412).
Specifically, by curing the adhesive agent through a curing process performed for several minutes to several hours, the bonded portion of the fabric for a filter bag is fixed against separation. In this regard, the curing time may be differently set depending on the kind and curing characteristics of the adhesive agent.
Thereafter, by repeatedly performing the bonding and compressing work a required number of times, the bonded support portions 706 are formed in the tip portions of all the inner bent portions of the fabric for a filter bag (Step 414).
There has been described an example in which the adhesive agent supply device of the present embodiment includes one adhesive agent ejector. However, this is
. g nothing more than one example presented for the sake of ~ convenience in description and increased understanding. The present disclosure is not limited thereto. It goes without saying that depending on the necessity and application, . several tens or hundreds adhesive agent ejectors may be N mounted on the adhesive agent supply device. Further, there has been described an example in which the roller pair °° includes the movable rollers 510a and 510b or the movable rollers 704a and 704b. However, this is nothing more than one example presented for the sake of convenience in description and increased understanding. It goes without saying that the roller pair may include a fixed roller and a movable roller.
From the foregoing, it will be appreciated that various embodiments of the present disclosure have been described herein for purposes of illustration, and that various modifications may be made without departing from the scope and spirit of the present disclosure. The exemplary embodiments disclosed in the specification of the present disclosure do not limit the present disclosure.
The scope of the present disclosure will be interpreted by the claims below, and it will be construed that all techniques within the scope equivalent thereto belong to the scope of the present disclosure.
Ty
Los io
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FILTER FOR DUST COLLECTOR AND METHOD FOR MANUFACTURING CON
FILTER BAG FOR DUST COLLECTOR ’ eA . : <r . TECHNICAL FIELD
The present disclosure relates to a filter for a dust i. collector and, more particularly, to a filter for a dust collector that can be manufactured through a simplified work process using a welding or bonding technique, and a method for manufacturing a filter bag for a dust collector.
Generally, it is common to construct a filter bag with a foldable/unfoldable pleated filter in order to increase the efficiency of dust collection in a dust collector. By increasing a surface area through the use of a foldable/unfoldable pleated filter structure, it is possible to obtain relatively high dust collection efficiency.
In this regard, the foldable/unfoldable pleated filter
Structure maintains the pleat on the basis of pleating and sewing. The existing pleated filter bag having such a structure is problematic in terms of durability when used as a filter bag for a dust collector. In addition, there is a problem that fine dust is discharged through the holes of a stitching.
Tv £
Further, in a dust collecting apparatus, a retainer is arranged on the inner side of a pleated filter bag as well = as a conventional round bag to maintain the shape of the - filter bag when filtering dust. In the inner folded portion - (pleated inner bent portion) of the pleated filter bag making contact with the retainer, a sewing thread is broken . or a sewing portion is elongated along with the repeated - execution of a dust removal process performed, for example, by high pressure aero pulse jetting or by injection of air blow. Thus, there is a possibility that the filtration efficiency decreases or the premature damage of the filter bag occurs.
Accordingly, conventicnally, a structure, in which a reinforcing fabric (reinforcing member or reinforcing band) is added to an inner bent portion of a pleated filter bag making contact with a retainer in the longitudinal direction of the pleated filter bag, 1s adopted to thereby prevent premature damage of the inner bent portion of the pleated filter bag making contact with the retainer during the removal of dust.
In this regard, the reinforcing fabric of the inner bent portion is made of, for example, the same material as the pleated filter bag, and is longitudinally added to the inner bent portion of the pleated filter bag through a sewing process manually performed by a worker.
Patent Document 1: Korean Patent Application
ES
Publication No. 10-2012-0123173 (published on November . 8, 2012)
However, it 1s necessary to manually perform the = . conventional method for manufacturing a pleated filter bag ; in a structure in which a reinforcing fabric is added to an ~ inner bent portion of the pleated filter bag through a 7 sewing work. This poses a problem in that the manufacturing process is complex and time-consuming, which requires skilled sewing workers. As a result, the manufacturing cost of the filter bag increases. Further, although the reinforcing fabric is added tc the inner bent portion of the pleated filter bag, there still remains the problem due to the sewing. In other words, in the inner folded portion (pleated inner bent portion) of the pleated filter bag making contact with the retainer, a sewing thread is broken or a sewing portion is elongated along with the repeated execution of a dust removal process performed, for example, by high pressure aero pulse jetting or by injection of air blow.
Furthermore, in the existing pleated filter bag manufacturing method, it 1s necessary to add the reinforcing fabric to the inner bent portion of the pleated filter bag.
This poses a problem in that the fabric (base material) is additionally consumed. This problem is a cause of additionally increasing the manufacturing cost of the filter bag.
¢ .
SUMMARY Po
In accordance with a first aspect of the present - - invention, there is provided a filter for a dust collector, oe including: a pleated filter bag in which inner bent portions o and outer bent portions are alternately formed; a plurality i of support reinforcing portions formed by compressing tip - portions of the inner bent portions; and a retainer disposed . inside the filter bag so as to make contact with the support reinforcing portions.
Each of the support reinforcing portions may be a support portion formed by melting a surface layer of a base material in each of the tip portions of the inner bent portions using a hot air and then compressing each of the tip portions of the inner bent portions with a roller pair.
Each of the support reinforcing portions may be a support portion formed by supplying an adhesive agent to each of the tip portions of the inner bent portions and then compressing each of the tip portions of the inner bent portions with a roller pair.
The adhesive agent may be automatically supplied to each of the tip portions of the inner bent portions by an adhesive agent ejector.
The adhesive agent may be a thermosetting adhesive agent or a UV-curable adhesive agent.
The thermosetting adhesive agent or the UV-curable
. adhesive agent may be one of a hot-melt adhesive agent, an acrylate adhesive agent, an epoxy adhesive agent, a polyurethane-based adhesive agent, a silicon-based adhesive - agent, and the like. 5
In accordance with a second aspect of the present i invention, there is provided a method for manufacturing a . filter bag for a dust collector, including: forming a - pleated filter bag in which inner bent portions and outer bent portions are alternately formed; and forming a plurality of support portions by melting tip portions of the inner bent portions and compressing the tip portions of the inner bent portions.
In each of the tip portions of the inner bent portions, a surface layer of a base material may be melted by a hot alr blown from a hot air nozzle.
Each of the tip portions of the inner bent portions may be compressed by a roller pair including a pair of fixed roller and movable roller or a pair of movable rollers.
The pleated filter bag may be automatically conveyed toward the roller pair by a conveyer belt.
In accordance with a third aspect of the present invention, there is provided a method for manufacturing a filter bag for a dust collector, including: forming a pleated filter bag in which inner bent portions and outer bent portions are alternately formed; supplying an adhesive agent to tip portions of the inner bent portions; and
. . forming a plurality of support portions by compressing the tip portions of the inner bent portions to which the ; adhesive agent is supplied. . : The method may further include curing the support : portions under a predetermined temperature condition.
The pleated filter bag may be kept in close contact with a pleat fabric support table by a pressing member 5 configured to press a valley between adjacent ridges of the pleated filter bag.
The adhesive agent may be a thermosetting adhesive agent or a UV-curable adhesive agent.
The thermosetting adhesive agent or the UV-curable adhesive agent may be one of a hot-melt adhesive agent, an acrylate adhesive agent, an epoxy adhesive agent, a polyurethane-based adhesive agent and a silicon-based adhesive agent.
In the forming a plurality of support portions, the tip portions of the inner bent portions may be compressed and bonded by a roller pair including a pair of fixed roller and movable roller or a pair of movable rollers.
The pleated filter bag may be automatically conveyed toward the roller pair by a conveyer belt.
According to the present disclosure, the compressed support reinforcing portion is formed by welding or bonding the tip of one bent portion of the filter bag constituting the filter for a dust collector, thereby eliminating the
Claims (17)
1. A filter for a dust collector, comprising: po a pleated filter bag in which inner bent portions and - outer bent portions are alternately formed; : a plurality of support reinforcing portions formed by compressing tip portions of the inner bent portions; and a retainer disposed inside the filter bag so as to ; make contact with the support reinforcing portions.
2. The filter of claim 1, wherein each of the support reinforcing portions is a support portion formed by melting a surface layer of a base material in each of the tip portions of the inner bent portions using a hot air and then compressing each of the tip portions of the inner bent portions with a roller pair.
3. The filter of claim 1, wherein each of the support reinforcing portions is a support portion formed by supplying an adhesive agent to each of the tip portions of the inner bent portions and then compressing each of the tip portions of the inner bent portions with a roller pair.
4. The filter of claim 3, wherein the adhesive agent is automatically supplied to each of the tip portions of the inner bent portions by an adhesive agent ejector.
5. The filter of claim 4, wherein the adhesive agent is a thermosetting adhesive agent or a UV-curable adhesive agent.
5. The filter of claim 5, wherein the thermosetting . adhesive agent or the UV-curable adhesive agent is one of a i hot-melt adhesive agent, an acrylate adhesive agent, an - epoxy adhesive agent, a polyurethane-based adhesive agent and a silicon-based adhesive agent.
7. A method for manufacturing a filter bag for a dust collector, comprising: forming a pleated filter bag in which inner bent portions and outer bent portions are alternately formed; and forming a plurality of support portions by melting tip portions of the inner bent portions and compressing the tip portions of the inner bent portions.
8. The method of claim 7, wherein in each of the tip portions of the inner bent portions, a surface layer of a base material is melted by a hot air blown from a hot air nozzle.
S. The method of claim 7, wherein each of the tip portions of the inner bent portions 1s compressed by a roller pair including a pair of fixed roller and movable -D 3m n :, roller or a pair of movable rollers. -
10. The method of claim 9, wherein the pleated filter bag is automatically conveyed toward the roller pair by a N conveyer belt. .
11. A method for manufacturing a filter bag for a dust = collector, comprising: oo forming a pleated filter bag in which inner bent portions and outer bent portions are alternately formed; supplying an adhesive agent to tip portions of the inner bent portions; and forming a plurality of support portions by compressing the tip portions of the inner bent portions to which the adhesive agent is supplied.
12. The method of claim 11, further comprising: curing the support portions under a predetermined temperature condition.
13. The method of claim 11, wherein the pleated filter bag is kept in close contact with a pleat fabric support table by a pressing member configured to press a valley between adjacent ridges of the pleated filter bag.
14. The method of claim 11, wherein the adhesive agent is a thermosetting adhesive agent or a UV-curable adhesive » agent.
15. The method of claim 14, wherein the thermosetting adhesive agent or the UV-curable adhesive agent is one of a - hot-melt adhesive agent, an acrylate adhesive agent, an . epoxy adhesive agent, a polyurethane-based adhesive agent and a silicon-based adhesive agent. :
l6. The method of claim 11, wherein in the forming a plurality of support portions, the tip portions of the inner bent portions are compressed and bonded by a roller pair including a pair of fixed roller and movable roller or a pair of movable rollers.
17. The method of claim 16, wherein the pleated filter bag is automatically conveyed toward the roller pair by a conveyer belt.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020160079054A KR101880224B1 (en) | 2016-06-24 | 2016-06-24 | Filter for dust collector and method for manufacturing filter bag for dust collector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| PH12017000174A1 true PH12017000174A1 (en) | 2018-07-23 |
| PH12017000174B1 PH12017000174B1 (en) | 2018-07-23 |
Family
ID=60888931
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PH12017000174A PH12017000174B1 (en) | 2016-06-24 | 2017-06-16 | Filter for dust collector and method for manufacturing filter bag for dust collector |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP6556788B2 (en) |
| KR (1) | KR101880224B1 (en) |
| PH (1) | PH12017000174B1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101951465B1 (en) | 2018-11-23 | 2019-02-22 | 케이씨에어필터텍 주식회사 | Filter Bag Assembly for Dust Collector |
| KR102223131B1 (en) * | 2020-05-18 | 2021-03-05 | 주식회사 마이크로원 | Filter applied with non-solvent seamsealing to improve efficiency of dust collector and method using the same |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS592819Y2 (en) * | 1978-10-30 | 1984-01-26 | 株式会社デンソー | For air purification filtration |
| EP0598908A1 (en) * | 1992-01-14 | 1994-06-01 | Daikin Industries, Ltd. | Filter and filter element |
| JP3070602B2 (en) * | 1992-01-14 | 2000-07-31 | ダイキン工業株式会社 | Reinforcement sheet for filter medium, filter medium for air filter and air filter device |
| JP2003025294A (en) * | 2001-07-10 | 2003-01-29 | Sanyou Kk | Cutting device for pleated cloth |
| JP4240865B2 (en) * | 2001-09-26 | 2009-03-18 | 三菱重工業株式会社 | Flame retardant filter and manufacturing method thereof |
| JP5233979B2 (en) * | 2009-12-21 | 2013-07-10 | トヨタ紡織株式会社 | Filter manufacturing method and manufacturing apparatus |
| DE102011011771A1 (en) * | 2011-02-18 | 2012-08-23 | Mann + Hummel Gmbh | Method for manufacturing filter element for filtering e.g. air, used in motor vehicle, involves interconnecting end sections of planar filter material sheet with each other by plastic material |
| JP5748541B2 (en) | 2011-04-19 | 2015-07-15 | 株式会社テクノＭ | Molded filter |
| KR101325078B1 (en) * | 2012-11-26 | 2013-11-05 | 주식회사 이피아이티 | Filter for dust collector |
| JP2016052644A (en) * | 2014-09-04 | 2016-04-14 | 住友電気工業株式会社 | Pleat filter, pleat filter cartridge, and ballast water treatment apparatus and ballast water treatment method using the same |
-
2016
- 2016-06-24 KR KR1020160079054A patent/KR101880224B1/en active IP Right Grant
-
2017
- 2017-06-16 PH PH12017000174A patent/PH12017000174B1/en unknown
- 2017-06-26 JP JP2017124204A patent/JP6556788B2/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| KR101880224B1 (en) | 2018-08-17 |
| JP6556788B2 (en) | 2019-08-07 |
| PH12017000174B1 (en) | 2018-07-23 |
| KR20180000846A (en) | 2018-01-04 |
| JP2017225971A (en) | 2017-12-28 |
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