WO2010087252A1 - Filter device and powder particle processing device - Google Patents

Filter device and powder particle processing device Download PDF

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Publication number
WO2010087252A1
WO2010087252A1 PCT/JP2010/050599 JP2010050599W WO2010087252A1 WO 2010087252 A1 WO2010087252 A1 WO 2010087252A1 JP 2010050599 W JP2010050599 W JP 2010050599W WO 2010087252 A1 WO2010087252 A1 WO 2010087252A1
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WIPO (PCT)
Prior art keywords
filter
filter device
band
filter body
outer peripheral
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Application number
PCT/JP2010/050599
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French (fr)
Japanese (ja)
Inventor
悦史 伊澤
一臣 鵜野澤
敬 寺田
Original Assignee
フロイント産業株式会社
アマノ株式会社
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Application filed by フロイント産業株式会社, アマノ株式会社 filed Critical フロイント産業株式会社
Publication of WO2010087252A1 publication Critical patent/WO2010087252A1/en

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    • 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
    • B01D46/521—Particle separators, e.g. dust precipitators, using filters embodying folded corrugated or wound sheet material using folded, pleated material
    • B01D46/523—Particle separators, e.g. dust precipitators, using filters embodying folded corrugated or wound sheet material using folded, pleated material with means for maintaining spacing between the pleats or folds
    • 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
    • B01D46/24—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
    • B01D46/2403—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies characterised by the physical shape or structure of the filtering element
    • B01D46/2411—Filter cartridges
    • 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
    • B01D46/66—Regeneration of the filtering material or filter elements inside the filter
    • B01D46/70—Regeneration of the filtering material or filter elements inside the filter by acting counter-currently on the filtering surface, e.g. by flushing on the non-cake side of the filter
    • B01D46/71—Regeneration of the filtering material or filter elements inside the filter by acting counter-currently on the filtering surface, e.g. by flushing on the non-cake side of the filter with pressurised gas, e.g. pulsed air
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2275/00—Filter media structures for filters specially adapted for separating dispersed particles from gases or vapours
    • B01D2275/50—Stabilised filter material, stabilised by, e.g. structuring, calendering

Definitions

  • the present invention relates to a filter that separates fine substances such as powders and powders, which have been fluidized by a gas flow, from gas, and in particular, when fine objects collected by the filter are removed.
  • the present invention relates to a filter device excellent in the effect of preventing foreign matters such as an adhesive from being mixed into a fine object, and a granular material processing device using the filter device.
  • a binder, coating liquid, etc. are supplied to the fluidized powder by spraying.
  • the powder processing apparatus is provided with a filter device for separating the powder from the exhaust of the apparatus while gas is supplied for fluidization of the powder.
  • the filter device separates the granular material fluidized by the gas flow, separates only the gas, and discharges it to the outside of the granular material processing device.
  • the filter filter installed in the filter device is gradually clogged with fine substances such as powder and particles collected with the operation of the powder processing apparatus. Therefore, in the granular material processing apparatus, in order to prevent clogging of the filter filter body, pulsed air for backwashing is appropriately sprayed inside the filter, and fine substances adhering to the filter filter body are removed.
  • a band-like band is wound around and fixed to a plurality of locations on the outer periphery of the filter filter body.
  • a method of bonding using an adhesive is often used between both ends of the band, or between the inner peripheral surface of the band and the outer periphery of the filter body (hereinafter referred to as “band both ends or the like”).
  • the adhesive for example, non-toxic and non-flammable adhesives, mainly hot-melt adhesives such as ethylene vinyl acetate copolymer, polyolefin copolymer, polyamide, and synthetic rubber are used.
  • the hot melt adhesive is applied to the bonding portion in a state of being overheated and melted using a tool such as a glue gun when bonding both ends of the band. Then, the hot melt adhesive is solidified by cooling to complete the bonding.
  • the bonding strength is the ambient environment (temperature and Humidity) and the amount of adhesive applied. Therefore, the adhesive strength tends to vary and it is difficult to ensure a certain quality. In addition, when the adhesive strength varies, there arises a problem that a portion having a weak adhesive strength is generated and the portion is easily peeled off.
  • the backwashing pulsed air is appropriately sprayed on the filter body of the filter device in order to prevent clogging due to adhesion and collection of fine objects. Therefore, with the repeated jetting of the backwashing pulse air, a load for peeling off the hot-melt adhesive is generated at the bonding locations such as between the both ends of the band. For this reason, the load has also caused a problem that a part of the adhesive may fall off from the filter body and the band may be peeled off.
  • the dropped adhesive when a part of the hot melt adhesive is dropped, the dropped adhesive may be mixed into the fine matter deposited in the collection container or the like.
  • the operation of removing the adhesive mixed in the recovered powder is very laborious and expensive, and the recovered fines have to be disposed of.
  • many powders used in the field of high value-added products such as pharmaceuticals, cosmetics, and foods are relatively expensive. For this reason, the filter apparatus which can reuse the collect
  • the present invention prevents a foreign substance such as a band or a hot-melt adhesive from entering the recovered powder, and enables the reuse of the recovered powder.
  • An object is to provide a particle processing apparatus.
  • the filter device of the present invention comprises a substantially cylindrical filter filter body having a star-shaped cross-sectional shape in a plane projection direction and formed in a pleat shape, plates disposed above and below the filter filter body, A filter body fixing member housed inside, a plurality of fixtures arranged at appropriate intervals in the circumferential direction of the filter filter body and welded and fixed to the outer peripheral side ridges of the filter filter body, And a belt-like band having both ends welded and fastened around the outer periphery of the filter body and supported by the fixture.
  • the filter device of the present invention not only can the bulge prevention effect of the filter body be improved, but also foreign matter can be prevented from entering the recovered powder, and band displacement and bending can also be suppressed.
  • both ends of the band and the outer peripheral side ridges of the filter body and the fixture may be welded by ultrasonic welding.
  • ultrasonic welding as the welding method, not only can the weld area be kept to a minimum and the damage to the filter filter can be reduced, but also the joining strength at each joining site can be secured strongly, and no gap is generated at the joining portion. This also improves the cleanability of the filter filter.
  • the fixing tool may be formed with a recess opened in the outer peripheral direction so that the band is engaged, or a slit through which the band passes.
  • both edge portions that are folded in two so as to protrude in the same direction as the outer peripheral side peak portion and that extend along the ridge line direction and the outer peripheral side peak portion may be welded.
  • a fixing tool into two fold shape, not only a fixing tool can be welded in the state mounted in the outer peripheral side peak part of a filter body but a welding operation
  • the fixing portion can be welded along the outer peripheral side peak portion of the filter body, it is easy to increase the welding area and secure the bonding strength, which can contribute to downsizing of the fixture.
  • the granular material processing apparatus of this invention has predetermined
  • An air supply duct that fluidizes the powder by supplying it into the granulation cylinder after adjusting the temperature, and the gas supplied into the granulation cylinder after passing through the filter device to the outside of the cylinder And an exhaust duct for discharging.
  • the granular material processing apparatus of the present invention it is possible to recycle relatively expensive recovered powder used in the field of manufacturing and producing high value-added products such as pharmaceuticals, cosmetics, and foods. , Can contribute to cost merit.
  • foreign matter such as hot melt adhesive can be prevented from being mixed in the recovered powder, and the recovered powder can be reused.
  • FIG. 1 is an external perspective view of a filter device according to an embodiment of the present invention. It is a perspective view of the principal part of Example 1 in the filter apparatus which concerns on one Embodiment of this invention. It is a perspective view of the principal part of Example 2 in the filter apparatus which concerns on one Embodiment of this invention.
  • FIG. 1 is an explanatory view of a granular material processing apparatus to which a filter device according to an embodiment of the present invention is applied
  • FIG. 2 is an explanatory view of a filter device according to an embodiment of the present invention
  • FIG. 3 is an embodiment of the present invention. It is an external appearance perspective view of the filter apparatus which concerns on a form.
  • the granular material processing apparatus 11 includes a substantially cylindrical granulation tube 12 having a reverse truncated cone portion 12b that expands upward from a bottom portion 12a.
  • An air supply duct 13 communicating with the inside of the granulation cylinder 12 is provided at the bottom 12 a of the granulation cylinder 12.
  • An exhaust duct 14 communicating with the inside of the granulation cylinder 12 is provided in the upper part 12 c of the granulation cylinder 12.
  • a partition plate 15 is provided near the upper inside of the granulation tube 12.
  • a plurality (one pair in this embodiment) of filter devices 16 and 16 are fixed to the partition plate 15 in a suspended state.
  • a perforated plate 17 is also disposed on the bottom 12 a of the granulation tube 12.
  • a spray nozzle 18 is disposed between the filter devices 16 and 16 and the perforated plate 17.
  • a pulse air supply pipe 19 is provided above the partition plate 15.
  • a cleaning filter 20 is disposed inside the air supply duct 13 on the upstream side in the air supply direction.
  • a heat exchanger 21 is arranged downstream of the cleaning filter 20 in the air supply direction.
  • Gas is introduced into the air supply duct 13 from a blower (not shown).
  • the gas introduced into the air supply duct 13 is cleaned by the cleaning filter 20 and then heated or cooled by the heat exchanger 21 to be adjusted to a predetermined temperature.
  • the temperature-adjusted gas passes through the perforated plate 17 and is supplied to the inside of the granulating cylinder 12 to fluidize the raw material granular material.
  • the gas supplied to the inside of the granulation cylinder 12 flows to the upper part 12c of the granulation cylinder 12 through the filter devices 16 and 16, and is discharged from the exhaust duct 14 to the outside of the cylinder.
  • the partition plate 15 is formed in a substantially disc shape. The peripheral edge of the partition plate 15 is fixed in contact with the inner surface of the granulation tube 12, and the granulation tube 12 is partitioned up and down by the partition plate 15.
  • the partition plate 15 is provided with blow-in holes 15 a and 15 a for pulse air (compressed air) for dropping off, facing the upper surfaces of the filter devices 16 and 16.
  • One or more blow holes 15a, 15a are formed in a narrower range than the upper surfaces of the filter devices 16, 16.
  • two filter devices 16 and 16 are installed.
  • the number of filter devices may be one or two or more.
  • the filter devices 16, 16 are tightly fixed to the partition plate 15 with mounting bolts 23 via mounting brackets 22.
  • the filter devices 16 and 16 may be tightly fixed to the partition plate 15 via a retainer (mounting bracket) fixed to the partition plate 15. In this case, the lower end of the central axis of the retainer is passed through a hole in the center of the plate attached below the filter devices 16 and 16.
  • the filter apparatuses 16 and 16 are fixed by screwing an end cap to the edge part of a retainer.
  • the spray nozzle 18 is connected to a liquid feed pump (not shown), and sprays a binder liquid, a coating liquid, or the like toward the lower inside of the granulation cylinder 12.
  • a liquid feed pump not shown
  • the granular material is fluidized by the gas flow supplied from the air supply duct 13 through the perforated plate 17.
  • a binder liquid or the like is supplied from the spray nozzle 18 to the fluidized granular material, and granulation treatment or coating treatment is performed inside the granulation cylinder 12.
  • the pulse air supply pipe 19 supplies pulse air into the granulation tube 12 from a pulse air supply source (not shown).
  • the pulse air supply pipe 19 is provided with a valve 24 arranged outside the granulation cylinder 12 and a pair of pulse jet nozzles 25, 25 for injecting pulse air toward the blowing holes 15 a, 15 a of the partition plate 15. .
  • the pair of pulse jet nozzles 25, 25 injects pulsed air (compressed air) at an appropriate time interval inside the filter devices 16, 16, and removes powder particles adhering to the filter devices 16, 16. Do.
  • the gas filtered by the filter devices 16 and 16 passes through the exhaust duct 14 through the blow holes 15a and 15a of the partition plate 15, and is discharged to the outside.
  • the filter device 16 is provided with a pair of upper and lower plates 26 and 27. Between the upper and lower plates 26 and 27, there is provided a substantially cylindrical filter body 28 having a star-shaped cross section (normal cross section) formed in a pleat shape. A rubber packing 29 is provided on the upper surface of the upper plate 26. Inside the filter body 28, a porous (or mesh-shaped) cage 30 having a substantially cylindrical shape held between the upper and lower plates 26 and 27 is disposed. On the outer periphery of the filter body 28, a pair of upper and lower bands 32, 32 mounted via a plurality of fixtures 31 are provided.
  • the upper plate 26 and the lower plate 27 are formed of a synthetic resin material such as ABS, and close the upper and lower sides of a substantially cylindrical filter filter 28.
  • An opening 26 a is formed in the upper plate 26.
  • the opening 26a is used for suction during operation and for blowing in pulsed air during wiping off.
  • the filter body 28 is made of spunbond (a filter obtained by heat-bonding long fibers).
  • the filter body 28 is not limited to a star-shaped and pleated substantially cylindrical shape, but may be a simple cylindrical shape.
  • the packing 29 is located between the upper plate 26 and the partition plate 15. By causing the partition plate 15 and the upper plate 26 to be in close contact with each other by the packing 29, leakage of the granular material to the exhaust duct 14 is prevented.
  • the cage 30 that is a filter fixing member is made of, for example, a punching metal made of stainless steel having a thickness of 1 mm or less and an aperture ratio of about 50%.
  • the cage 30 has a substantially cylindrical shape and has substantially the same length (height) as the filter body 28.
  • the cage 30 is accommodated in the filter body 28, and the upper and lower ends of the cage 30 are fixed with a filler such as silicon.
  • the cage 30 may be made of a material other than iron such as stainless steel (for example, resin).
  • a plurality of fixtures 31 are arranged at equal intervals (for example, five locations) in the circumferential direction of the filter body 28.
  • positioning of fixtures 31 ... can select an appropriate number with the diameter dimension of the filter body 28.
  • FIG. 4 For example, as shown in FIG. 4, a recess 31a that opens in the outer peripheral direction so as to engage with the bands 32, 32, or the bands 32, 32 penetrate as shown in FIG. A slit 31b is formed.
  • the recess 31a or the slit 31b preferably has a size that does not cause backlash between the bands 32 and 32 and the recess 31a or the slit 31b.
  • the depth of the recess 31 a and the position where the slit 31 b is formed are set in the vicinity where the recess 31 a and the slit 31 b are in contact with the outer periphery of the filter filter 28 with the fixtures 31 attached to the filter filter 28.
  • the inner peripheral surfaces of the bands 32 and 32 attached to the recess 31 a and the slit 31 b can be brought into close contact with the outer peripheral surface of the filter body 28.
  • the recessed portions 31a are formed in the fixtures 31 ..., the workability of winding the bands 32, 32 is improved.
  • the slits 31b are formed in the fixtures 31 ..., the bands 32, 32 can be prevented from falling off the fixtures 31 ... including the time when the bands 32, 32 are wound. Since a plurality of fixtures 31 are arranged, it is possible to use a mixture of the fixtures 31 provided with the recesses 31a and the fixtures 31 formed with the slits 31b.
  • the material of the fixing device 31 is a woven fabric made of polyester (using a food hygiene law compliant product), and its thickness is about 0.5 to 1.5 mm.
  • the fixtures 31 are placed on the outer peripheral side peak portion of the filter filter body 28 in a folded state so as to protrude in the same direction as the outer peripheral side peak portion of the filter filter body 28.
  • the fixing tool 31 is welded to the filter body 28 at least the both edge parts along the ridgeline direction, and an outer peripheral side peak part.
  • the fixtures 31 are welded to the filter filter body 28 by an ultrasonic welding machine over the entire peripheral edge thereof.
  • the welding operation can be easily performed in a state where the fixtures 31 are folded on the outer peripheral side peak of the filter body 28. Further, a wide welding area can be secured, and a strong joining structure can be secured. Furthermore, since ultrasonic welding is a processing technique that instantaneously melts and joins joints with fine ultrasonic vibration and pressure, the fixtures 31 are welded to the outer peripheral side of the filter body 28. In this case, by adopting ultrasonic welding, if the same material is used for welding, the strength can be ensured to a level close to the strength of the base material. In addition, ultrasonic welding is not easily affected by the surrounding environment (temperature, humidity, etc.) of the workplace, and enables stable welding work to be performed.
  • the material of the bands 32 and 32 is a woven fabric made of polyester (using a product conforming to the Food Sanitation Law), and preferably has a width of 20 to 30 mm and a thickness of about 0.5 to 1.5 mm.
  • Two bands 32 and 32 are arranged in the vertical direction of the filter body 28 with an appropriate interval. Accordingly, the above-described fixtures 31 are also arranged at appropriate intervals in the vertical direction of the filter body 28. At this time, by disposing the fixing tool 31 up and down, the upper and lower two fixing tools 31 are not joined to the outer periphery of the same peak portion of the filter filter 28, and the outer peripheral side peak of the filter filter 28 is eliminated. The strength of the part can be ensured.
  • the number of the bands 32 and 32 can be suitably used according to the full length (height) of the filter apparatuses 16 and 16.
  • the wrap allowance (overlap allowance) of about 5 to 10 mm is secured between both ends of the bands 32 and 32.
  • the bands 32 and 32 are fastened by ultrasonic welding after bending the lap portions of the bands 32 and 32 inward of the filter body 28 (see FIG. 4).
  • the wrap margins at both ends of the bands 32 and 32 may be similarly secured by about 5 to 10 mm, and the lap portions may be ultrasonically welded in a state where they are overlapped with each other (see FIG. 5).
  • the filter devices 16, 16 of the present invention are attached to the granular material processing device 11, pulse air is sprayed to prevent clogging of the filter filter 28. And then pay off.
  • the pulse air is sprayed, the load in the direction in which the filter filter 28 tends to swell at the bands 32 and 32 wound around the outer periphery of the filter filter 28 or the joints between the bands 32 and 32 and the filter filter 28. It takes.
  • both ends of the bands 32 and 32 of the present invention, and the filter body 28 and the fixture 31 are joined with high strength by ultrasonic welding without using an adhesive. For this reason, it is possible not only to suppress peeling of these joints and dropping of the band, but also the peeled adhesive does not fall to the bottom 12a of the granulation tube 12. Accordingly, it is possible to prevent foreign substances such as an adhesive from being mixed into the collected powder deposited on the bottom 12a of the granulation cylinder 12. Further, since the gap is not generated in the joint portion such as a band due to the high-strength joining by the ultrasonic welding, the filter filter 28 can be easily cleaned.
  • the filter devices 16 and 16 of the present invention GMP (Good Manufacturing Practice) or the Food Sanitation Law is used for the purpose of hygiene or the purpose of reusing the collected powder deposited on the bottom 12a of the granulation cylinder 12.
  • GMP Good Manufacturing Practice
  • Food Sanitation Law is used for the purpose of hygiene or the purpose of reusing the collected powder deposited on the bottom 12a of the granulation cylinder 12.
  • a material that conforms to the standards is used, but other materials can be used as appropriate according to the purpose of use.
  • the use of the filter apparatus 16 and 16 which concerns on this invention is not limited to the granular material processing apparatus 11 mentioned above, For example, application to the dust collector etc. which are used for a general dust collection use is also possible. , Its uses are diverse.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
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  • Filtering Of Dispersed Particles In Gases (AREA)

Abstract

A filter device (16) provided with: a substantially cylindrical filtering body (28) having a pleated star shape when projected on a plan view plane; plates (26, 27) provided to the top and bottom of the filtering body (28); a cage (30) contained within the filtering body (28) and serving as a filtering body fixing member; fixing elements (31) arranged on the filtering body (28) at appropriate intervals in the circumferential direction thereof and fixed by welding to the filtering body (28), to the crests on the outer periphery thereof; and a band (32) annularly mounted to the outer periphery of the filtering body (28) and having opposite ends thereof welded together with the band (32) supported by the fixing elements (31).

Description

フィルタ装置及び粉粒体処理装置Filter device and granular material processing device
　本発明は、気体流により流動化された、粉体や粉粒体等の微細物を、気体と分離するフィルタに関し、特に、フィルタにて捕集した微細物を払い落とす際に、払い落とした微細物に接着剤のような異物が混入するのを防止する効果に優れたフィルタ装置、及び、該フィルタ装置を用いた粉粒体処理装置に関する。 The present invention relates to a filter that separates fine substances such as powders and powders, which have been fluidized by a gas flow, from gas, and in particular, when fine objects collected by the filter are removed. The present invention relates to a filter device excellent in the effect of preventing foreign matters such as an adhesive from being mixed into a fine object, and a granular material processing device using the filter device.
　従来から、医薬品や化粧品或いは食品等の製造分野では、粉体や粉粒体等の微細物から、造粒処理、コーティング処理、混合処理、乾燥処理等の各種処理を経て、様々な製品を製造している。このような製品製造工程においては、微細物を気体流によって流動化させて造粒処理等を行う流動層造粒装置などの粉粒体処理装置が使用されている（例えば、特許文献１参照）。 Conventionally, in the manufacturing field of pharmaceuticals, cosmetics, foods, etc., various products such as granulation, coating, mixing, and drying are manufactured from fine products such as powders and granules. is doing. In such a product manufacturing process, a granular material processing apparatus such as a fluidized bed granulating apparatus that performs a granulating process by fluidizing a fine substance by a gas flow is used (for example, see Patent Document 1). .
　粉粒体処理装置を用いて造粒処理等を実施する際には、流動化した粉粒体に、バインダやコーティング液等をスプレーにて供給する。粉粒体処理装置には、粉粒体の流動化のために気体が供給される一方、装置の排気から粉粒体を分離するためのフィルタ装置が設けられている。フィルタ装置は、気体流によって流動化された粉粒体を濾別し、気体だけを分離して粉粒体処理装置の外部へと排出する。 When carrying out granulation using a powder processing apparatus, a binder, coating liquid, etc. are supplied to the fluidized powder by spraying. The powder processing apparatus is provided with a filter device for separating the powder from the exhaust of the apparatus while gas is supplied for fluidization of the powder. The filter device separates the granular material fluidized by the gas flow, separates only the gas, and discharges it to the outside of the granular material processing device.
　フィルタ装置に設置されたフィルタ濾過体には、粉粒体処理装置の稼働に伴って捕集される粉体や粉粒体等の微細物によって、次第に目詰まりが発生してくる。従って、粉粒体処理装置では、フィルタ濾過体の目詰まりを防止するため、適宜、フィルタ内部に逆洗用パルスエアを噴射し、フィルタ濾過体に付着した微細物を払い落としている。 The filter filter installed in the filter device is gradually clogged with fine substances such as powder and particles collected with the operation of the powder processing apparatus. Therefore, in the granular material processing apparatus, in order to prevent clogging of the filter filter body, pulsed air for backwashing is appropriately sprayed inside the filter, and fine substances adhering to the filter filter body are removed.
　一方、フィルタ濾過体には、逆洗用パルスエアの噴射によりフィルタ濾過体が必要以上に膨らんでしまうことを防止するため、フィルタ濾過体の外周の複数個所に、帯状のバンドを巻き付け、固定したものが知られている（特許文献２参照）。バンドの両端部同士や、バンド内周面とフィルタ濾過体の外周とは（以下、「バンド両端部等」と称する。）、接着剤を用いて接着する方法が多く用いられている。接着剤としては、例えば、毒性が無く且つ不燃性の接着剤、主として、エチレン酢酸ビニル共重合物やポリオレフィン共重合物、ポリアミド、合成ゴム系等のホットメルト接着剤が使用される。 On the other hand, in order to prevent the filter filter body from bulging more than necessary due to the injection of backwashing pulse air, a band-like band is wound around and fixed to a plurality of locations on the outer periphery of the filter filter body. Is known (see Patent Document 2). A method of bonding using an adhesive is often used between both ends of the band, or between the inner peripheral surface of the band and the outer periphery of the filter body (hereinafter referred to as “band both ends or the like”). As the adhesive, for example, non-toxic and non-flammable adhesives, mainly hot-melt adhesives such as ethylene vinyl acetate copolymer, polyolefin copolymer, polyamide, and synthetic rubber are used.
　ホットメルト接着剤は、バンド両端部等を接着する際には、グルーガン等の工具を用いて過熱溶融した状態で接着箇所に塗布される。そして、ホットメルト接着剤が、冷却により固化することで接着が完了となる。
特開２００５－１９３１３１号公報 特開２００６－０００７５６号公報 The hot melt adhesive is applied to the bonding portion in a state of being overheated and melted using a tool such as a glue gun when bonding both ends of the band. Then, the hot melt adhesive is solidified by cooling to complete the bonding.
JP-A-2005-193131 JP 2006-000756 A
　ところが、上記の如く構成されたフィルタ装置にあっては、ホットメルト接着剤を用いて前記バンド両端部等を接着（固定）しているため、接着強度は、接着作業を行う周囲環境（温度や湿度等）や、接着剤の塗布量に依存する。従って、接着強度にばらつきが発生し易く、一定品質を確保することが難しい。しかも、接着強度にばらつきが発生すると、接着強度が弱い部分が生じ、その部分が剥がれ易いという問題が生じる。 However, in the filter device configured as described above, since the both ends of the band are bonded (fixed) using a hot melt adhesive, the bonding strength is the ambient environment (temperature and Humidity) and the amount of adhesive applied. Therefore, the adhesive strength tends to vary and it is difficult to ensure a certain quality. In addition, when the adhesive strength varies, there arises a problem that a portion having a weak adhesive strength is generated and the portion is easily peeled off.
　また、上述したように、フィルタ装置のフィルタ濾過体は、微細物の付着・捕集に伴う目詰まりの進行を防止するために、適宜、逆洗用パルスエアが噴射される。従って、この逆洗用パルスエアの繰り返し噴射に伴い、バンド両端部間等の接着箇所には、ホットメルト接着剤を引き剥がそうとする負荷が発生する。このため、その負荷によって、フィルタ濾過体から接着剤の一部が脱落し、バンドが剥がれてしまうおそれがある、という問題も生じていた。 Also, as described above, the backwashing pulsed air is appropriately sprayed on the filter body of the filter device in order to prevent clogging due to adhesion and collection of fine objects. Therefore, with the repeated jetting of the backwashing pulse air, a load for peeling off the hot-melt adhesive is generated at the bonding locations such as between the both ends of the band. For this reason, the load has also caused a problem that a part of the adhesive may fall off from the filter body and the band may be peeled off.
　さらに、ホットメルト接着剤の一部が脱落すると、その脱落した接着剤が、回収容器等に堆積した微細物内に混入してしまうおそれがある。接着剤が混入した回収粉体を再利用するためには、異物である接着剤を除去する必要がある。しかしながら、実際には、回収粉体に混入してしまった接着剤の除去作業は、非常に手間を要するうえ、費用も嵩むため、回収した微細物は廃棄処分をせざるを得なかった。また、医薬品や化粧品、食品等の高付加価値製品の分野で使用される粉体は、比較的高価な物が多い。このため、回収した微細物を再利用できるフィルタ装置が求められていた。 Furthermore, when a part of the hot melt adhesive is dropped, the dropped adhesive may be mixed into the fine matter deposited in the collection container or the like. In order to reuse the collected powder mixed with the adhesive, it is necessary to remove the adhesive which is a foreign substance. However, in practice, the operation of removing the adhesive mixed in the recovered powder is very laborious and expensive, and the recovered fines have to be disposed of. Moreover, many powders used in the field of high value-added products such as pharmaceuticals, cosmetics, and foods are relatively expensive. For this reason, the filter apparatus which can reuse the collect | recovered fine substance was calculated | required.
　そこで、本発明は、上記事情を考慮し、回収粉体内に、バンドやホットメルト接着剤のような異物が混入するのを防止し、回収粉体の再利用を可能とした、フィルタ装置及び粉粒体処理装置を提供することを目的とする。 Therefore, in consideration of the above circumstances, the present invention prevents a foreign substance such as a band or a hot-melt adhesive from entering the recovered powder, and enables the reuse of the recovered powder. An object is to provide a particle processing apparatus.
　本発明のフィルタ装置は、平面投影方向の断面形状が星型でプリーツ状に形成された略円筒形状のフィルタ濾過体と、該フィルタ濾過体の上下に配置されたプレートと、前記フィルタ濾過体の内部に収容された濾過体固定部材と、前記フィルタ濾過体の円周方向に適宜の間隔をおいて配置され且つ前記フィルタ濾過体の外周側山部に溶着固定された複数の固定具と、前記フィルタ濾過体の外周に環装され且つ前記固定具に支持された状態で両端部同士が溶着締結された帯状のバンドと、を備えていることを特徴とする。 The filter device of the present invention comprises a substantially cylindrical filter filter body having a star-shaped cross-sectional shape in a plane projection direction and formed in a pleat shape, plates disposed above and below the filter filter body, A filter body fixing member housed inside, a plurality of fixtures arranged at appropriate intervals in the circumferential direction of the filter filter body and welded and fixed to the outer peripheral side ridges of the filter filter body, And a belt-like band having both ends welded and fastened around the outer periphery of the filter body and supported by the fixture.
　本発明のフィルタ装置によれば、フィルタ濾過体の膨らみ防止効果を向上できるばかりでなく、回収粉体内への異物の混入を抑制でき、バンドのずれや曲がりも抑制できる。 According to the filter device of the present invention, not only can the bulge prevention effect of the filter body be improved, but also foreign matter can be prevented from entering the recovered powder, and band displacement and bending can also be suppressed.
　本発明のフィルタ装置において、前記バンドの両端部同士及び前記フィルタ濾過体の外周側山部と前記固定具とを超音波溶着で溶着しても良い。溶着方法として超音波溶着を使用することにより、溶着面積を最小限に留めてフィルタ濾過体の傷みを少なくできるばかりでなく、各接合部位の接合強度を強く確保でき、接合部にすき間が発生しないことでフィルタ濾過体の洗浄性も向上する。 In the filter device of the present invention, both ends of the band and the outer peripheral side ridges of the filter body and the fixture may be welded by ultrasonic welding. By using ultrasonic welding as the welding method, not only can the weld area be kept to a minimum and the damage to the filter filter can be reduced, but also the joining strength at each joining site can be secured strongly, and no gap is generated at the joining portion. This also improves the cleanability of the filter filter.
　また、前記固定具に、前記バンドが係合するように外周方向に開放した凹部、又は、前記バンドが貫通するスリットを形成しても良い。これにより、バンドの位置決めをより一層確実に行うことができ、バンドのずれや曲がりの発生、並びに、バンドの脱落を抑制できる。 Further, the fixing tool may be formed with a recess opened in the outer peripheral direction so that the band is engaged, or a slit through which the band passes. As a result, the band can be positioned more reliably, and the occurrence of band displacement and bending, and the loss of the band can be suppressed.
　さらに、前記固定具において、前記外周側山部と同方向に突出するように二つ折りとされ且つその稜線方向に沿う両縁部と前記外周側山部とを溶着しても良い。このように固定具を二つ折り形状とすることによって、フィルタ濾過体の外周側山部に載せた状態で固定具を溶着することができるばかりでなく、溶着作業が容易となる。しかも、フィルタ濾過体の外周側山部に沿って固定部を溶着できるので、溶着面積の増大や接合強度の確保が容易となり、固定具の小型化にも貢献できる。 Furthermore, in the fixing device, both edge portions that are folded in two so as to protrude in the same direction as the outer peripheral side peak portion and that extend along the ridge line direction and the outer peripheral side peak portion may be welded. Thus, by making a fixing tool into two fold shape, not only a fixing tool can be welded in the state mounted in the outer peripheral side peak part of a filter body but a welding operation | work becomes easy. In addition, since the fixing portion can be welded along the outer peripheral side peak portion of the filter body, it is easy to increase the welding area and secure the bonding strength, which can contribute to downsizing of the fixture.
　また、本発明の粉粒体処理装置は、請求項１乃至請求項４の何れかに記載のフィルタ装置を配置した略円筒形状の造粒筒と、ブロワーから導入されて清浄化した気体を所定温度に調整したうえで前記造粒筒内に供給して粉粒体を流動化させる給気ダクトと、前記造粒筒内に供給された気体を、前記フィルタ装置を経由した後に筒外へと排出する排気ダクトと、を備えていることを特徴とする。 Moreover, the granular material processing apparatus of this invention has predetermined | prescribed gas which was introduce | transduced from the substantially cylindrical granulation cylinder which has arrange | positioned the filter apparatus in any one of Claim 1 thru | or 4, and was purified from the blower. An air supply duct that fluidizes the powder by supplying it into the granulation cylinder after adjusting the temperature, and the gas supplied into the granulation cylinder after passing through the filter device to the outside of the cylinder And an exhaust duct for discharging.
　本発明の粉粒体処理装置によれば、医薬品や化粧品、食品等の高付加価値製品を製造・生産する分野で使用される比較的高価な回収粉体の再利用を可能とすることができ、コストメリットに貢献できる。 According to the granular material processing apparatus of the present invention, it is possible to recycle relatively expensive recovered powder used in the field of manufacturing and producing high value-added products such as pharmaceuticals, cosmetics, and foods. , Can contribute to cost merit.
　本発明のフィルタ装置によれば、回収粉体内に、ホットメルト接着剤のような異物が混入するのを防止でき、回収粉体の再利用が可能となる。 According to the filter device of the present invention, foreign matter such as hot melt adhesive can be prevented from being mixed in the recovered powder, and the recovered powder can be reused.
本発明の一実施形態に係るフィルタ装置を適用した粉粒体処理装置の説明図である。It is explanatory drawing of the granular material processing apparatus to which the filter apparatus which concerns on one Embodiment of this invention is applied. 本発明の一実施形態に係るフィルタ装置の説明図である。It is explanatory drawing of the filter apparatus which concerns on one Embodiment of this invention. 本発明の一実施形態に係るフィルタ装置の外観斜視図である。1 is an external perspective view of a filter device according to an embodiment of the present invention. 本発明の一実施形態に係るフィルタ装置における実施例１の要部の斜視図である。It is a perspective view of the principal part of Example 1 in the filter apparatus which concerns on one Embodiment of this invention. 本発明の一実施形態に係るフィルタ装置における実施例２の要部の斜視図である。It is a perspective view of the principal part of Example 2 in the filter apparatus which concerns on one Embodiment of this invention.
　１１　　粉粒体処理装置
　１２　　造粒筒
　１３　　給気ダクト
　１４　　排気ダクト
　１５　　仕切板
　１６　　フィルタ装置
　２６　　上プレート
　２６ａ　開口部
　２７　　下プレート
　２８　　フィルタ濾過体
　３０　　ケージ（濾過体固定部材）
　３１　　固定具
　３１ａ　凹部
　３１ｂ　スリット
　３２　　バンド DESCRIPTION OF SYMBOLS 11 Granule processing apparatus 12 Granulation cylinder 13 Air supply duct 14 Exhaust duct 15 Partition plate 16 Filter apparatus 26 Upper plate 26a Opening part 27 Lower plate 28 Filter filter body 30 Cage (filter body fixing member)
31 Fixing tool 31a Recess 31b Slit 32 Band
　次に、本発明のフィルタ装置に係る一実施形態を、医薬品や化粧品或いは食品向けの粉粒体処理装置に適用した場合について、図面を参照して説明する。 Next, a case where one embodiment of the filter device of the present invention is applied to a powder processing apparatus for pharmaceuticals, cosmetics or food will be described with reference to the drawings.
　尚、以下に示す実施形態は本発明の好適な具体例であり、技術的に好ましい種々の限定を付している場合もあるが、本発明の技術範囲は、特に本発明を限定する記載がない限りこれらの態様に限定されるものではない。図１は本発明の一実施形態に係るフィルタ装置を適用した粉粒体処理装置の説明図、図２は本発明の一実施形態に係るフィルタ装置の説明図、図３は本発明の一実施形態に係るフィルタ装置の外観斜視図である。 The following embodiments are preferred specific examples of the present invention and may have various technically preferable limitations. However, the technical scope of the present invention is not limited to the description of the present invention. As long as it is not limited to these embodiments. FIG. 1 is an explanatory view of a granular material processing apparatus to which a filter device according to an embodiment of the present invention is applied, FIG. 2 is an explanatory view of a filter device according to an embodiment of the present invention, and FIG. 3 is an embodiment of the present invention. It is an external appearance perspective view of the filter apparatus which concerns on a form.
　図１において、粉粒体処理装置１１は、底部１２ａから上向きに拡開する逆向きの截頭円錐部１２ｂを備えた略円筒形状の造粒筒１２を備える。造粒筒１２の底部１２ａには、造粒筒１２内と連通する給気ダクト１３が設けられている。造粒筒１２の上部１２ｃには、造粒筒１２内と連通する排気ダクト１４が設けられている。造粒筒１２の内部上方寄りには、仕切板１５が設けられている。仕切板１５には、複数（本実施の形態では一対）のフィルタ装置１６，１６が吊り下げられた状態で固定されている。造粒筒１２の底部１２ａにはまた、多孔板１７が配置されている。フィルタ装置１６，１６と多孔板１７との間には、スプレーノズル１８が配置されている。仕切板１５の上方には、パルスエア供給管１９が配管されている。 In FIG. 1, the granular material processing apparatus 11 includes a substantially cylindrical granulation tube 12 having a reverse truncated cone portion 12b that expands upward from a bottom portion 12a. An air supply duct 13 communicating with the inside of the granulation cylinder 12 is provided at the bottom 12 a of the granulation cylinder 12. An exhaust duct 14 communicating with the inside of the granulation cylinder 12 is provided in the upper part 12 c of the granulation cylinder 12. A partition plate 15 is provided near the upper inside of the granulation tube 12. A plurality (one pair in this embodiment) of filter devices 16 and 16 are fixed to the partition plate 15 in a suspended state. A perforated plate 17 is also disposed on the bottom 12 a of the granulation tube 12. A spray nozzle 18 is disposed between the filter devices 16 and 16 and the perforated plate 17. A pulse air supply pipe 19 is provided above the partition plate 15.
　給気ダクト１３の内部には、給気方向上流側に、清浄用フィルタ２０が配置されている。清浄用フィルタ２０よりも給気方向下流側には、熱交換器２１が配置されている。給気ダクト１３には、図示を略するブロアから気体が導入される。給気ダクト１３に導入された気体は、清浄用フィルタ２０にて清浄化された後に、熱交換器２１にて加熱又は冷却されて所定温度に調整される。温度調整された気体は、多孔板１７を通過して造粒筒１２の内部に供給され、原料の粉粒体を流動化する。造粒筒１２の内部に供給された気体は、フィルタ装置１６，１６を介して造粒筒１２の上部１２ｃへと流れ、排気ダクト１４から、筒外へと排出される。 A cleaning filter 20 is disposed inside the air supply duct 13 on the upstream side in the air supply direction. A heat exchanger 21 is arranged downstream of the cleaning filter 20 in the air supply direction. Gas is introduced into the air supply duct 13 from a blower (not shown). The gas introduced into the air supply duct 13 is cleaned by the cleaning filter 20 and then heated or cooled by the heat exchanger 21 to be adjusted to a predetermined temperature. The temperature-adjusted gas passes through the perforated plate 17 and is supplied to the inside of the granulating cylinder 12 to fluidize the raw material granular material. The gas supplied to the inside of the granulation cylinder 12 flows to the upper part 12c of the granulation cylinder 12 through the filter devices 16 and 16, and is discharged from the exhaust duct 14 to the outside of the cylinder.
　仕切板１５は、略円板状に形成されている。仕切板１５の周縁は、造粒筒１２の内面に接触した状態で固定され、造粒筒１２は、仕切板１５によって上下に仕切られる。仕切板１５には、フィルタ装置１６，１６の上面と対向して、払い落とし用パルスエア（圧縮空気）の吹込穴１５ａ，１５ａが設けられている。吹込穴１５ａ，１５ａは、フィルタ装置１６，１６の上面よりも狭い範囲に、一つ以上形成されている。 The partition plate 15 is formed in a substantially disc shape. The peripheral edge of the partition plate 15 is fixed in contact with the inner surface of the granulation tube 12, and the granulation tube 12 is partitioned up and down by the partition plate 15. The partition plate 15 is provided with blow-in holes 15 a and 15 a for pulse air (compressed air) for dropping off, facing the upper surfaces of the filter devices 16 and 16. One or more blow holes 15a, 15a are formed in a narrower range than the upper surfaces of the filter devices 16, 16.
　フィルタ装置１６，１６は、本実施の形態においては、二台設置されているが、フィルタ装置の設置数は、一台でも、二台以上の複数でも良い。フィルタ機能を高めるためには、複数のフィルタ装置１６，１６を設置することが好ましい。フィルタ装置１６，１６は、仕切板１５に、取付金具２２を介して、取付ボルト２３により、密着固定されている。なお、図示しないが、仕切板１５に固定されたリテーナー（取付金具）を介して、フィルタ装置１６，１６を仕切板１５に密着固定しても良い。この場合、フィルタ装置１６，１６の下方に取り付けられたプレートの中央の穴に、リテーナーの中心軸の下端を貫通させる。そして、リテーナーの端部にエンドキャップをネジ止めすることにより、フィルタ装置１６，１６を固定する。 In the present embodiment, two filter devices 16 and 16 are installed. However, the number of filter devices may be one or two or more. In order to enhance the filter function, it is preferable to install a plurality of filter devices 16 and 16. The filter devices 16, 16 are tightly fixed to the partition plate 15 with mounting bolts 23 via mounting brackets 22. Although not shown, the filter devices 16 and 16 may be tightly fixed to the partition plate 15 via a retainer (mounting bracket) fixed to the partition plate 15. In this case, the lower end of the central axis of the retainer is passed through a hole in the center of the plate attached below the filter devices 16 and 16. And the filter apparatuses 16 and 16 are fixed by screwing an end cap to the edge part of a retainer.
　スプレーノズル１８は、図示しない送液ポンプと接続されており、バインダ液やコーティング液等を、造粒筒１２の内部下方に向けて噴霧する。造粒筒１２内では、給気ダクト１３から、多孔板１７を通過して供給された気体流によって、粉粒体が流動化されている。スプレーノズル１８より、この流動化された粉粒体にバインダ液等が供給され、造粒筒１２の内部にて、造粒処理やコーティング処理が行われる。 The spray nozzle 18 is connected to a liquid feed pump (not shown), and sprays a binder liquid, a coating liquid, or the like toward the lower inside of the granulation cylinder 12. In the granulating cylinder 12, the granular material is fluidized by the gas flow supplied from the air supply duct 13 through the perforated plate 17. A binder liquid or the like is supplied from the spray nozzle 18 to the fluidized granular material, and granulation treatment or coating treatment is performed inside the granulation cylinder 12.
　パルスエア供給管１９は、図示しないパルスエア供給源から、造粒筒１２の内部にパルスエアを供給する。パルスエア供給管１９には、造粒筒１２の外部に配置されたバルブ２４と、仕切板１５の吹込穴１５ａ，１５ａに向けてパルスエアを噴射する一対のパルスジェットノズル２５，２５が設けられている。 The pulse air supply pipe 19 supplies pulse air into the granulation tube 12 from a pulse air supply source (not shown). The pulse air supply pipe 19 is provided with a valve 24 arranged outside the granulation cylinder 12 and a pair of pulse jet nozzles 25, 25 for injecting pulse air toward the blowing holes 15 a, 15 a of the partition plate 15. .
　一対のパルスジェットノズル２５，２５は、フィルタ装置１６，１６の内側に、適宜の時間間隔をおいてパルスエア（圧縮空気）を噴射し、フィルタ装置１６，１６に付着した粉粒体の払い落としを行う。尚、フィルタ装置１６，１６によって濾別された気体は、仕切板１５の吹込穴１５ａ，１５ａより排気ダクト１４を通過して外部に排出される。 The pair of pulse jet nozzles 25, 25 injects pulsed air (compressed air) at an appropriate time interval inside the filter devices 16, 16, and removes powder particles adhering to the filter devices 16, 16. Do. The gas filtered by the filter devices 16 and 16 passes through the exhaust duct 14 through the blow holes 15a and 15a of the partition plate 15, and is discharged to the outside.
　次に、本発明の一実施形態に係るフィルタ装置１６，１６の詳細を説明する。尚、以下の説明においては、各フィルタ装置１６，１６は、同一構成のため、一方のフィルタ装置１６についてのみ説明する。 Next, details of the filter devices 16 and 16 according to an embodiment of the present invention will be described. In the following description, since each filter device 16, 16 has the same configuration, only one filter device 16 will be described.
　図２及び図３に示すように、フィルタ装置１６には、上下一対のプレート２６，２７が設けられている。上下プレート２６，２７の間には、平面投影方向の断面（正断面）が、星型でプリーツ状に形成された略円筒形状のフィルタ濾過体２８が設けられている。上プレート２６の上面には、ゴム製のパッキン２９が設けられている。フィルタ濾過体２８の内側には、上下プレート２６，２７の間に保持された多孔質（又はメッシュ状）の略円筒形状のケージ３０が配置されている。フィルタ濾過体２８の外周には、複数の固定具３１…を介して装着された、上下一対のバンド３２，３２が設けられている。 2 and 3, the filter device 16 is provided with a pair of upper and lower plates 26 and 27. Between the upper and lower plates 26 and 27, there is provided a substantially cylindrical filter body 28 having a star-shaped cross section (normal cross section) formed in a pleat shape. A rubber packing 29 is provided on the upper surface of the upper plate 26. Inside the filter body 28, a porous (or mesh-shaped) cage 30 having a substantially cylindrical shape held between the upper and lower plates 26 and 27 is disposed. On the outer periphery of the filter body 28, a pair of upper and lower bands 32, 32 mounted via a plurality of fixtures 31 are provided.
　上プレート２６と下プレート２７は、ＡＢＳ等の合成樹脂材料によって成形されており、略円筒形状のフィルタ濾過体２８の上下を塞いでいる。上プレート２６には、開口部２６ａが形成されている。開口部２６ａは、稼動時の吸引と、払い落とし時のパルスエアの吹き込みに使用される。フィルタ濾過体２８は、スパンボンド（長繊維を熱溶着成形したフィルタ）で構成されている。尚、フィルタ濾過体２８は、その正断面形状が星型でプリーツ状の略円筒形状に限らず、単なる筒型等でも良い。パッキン２９は、上プレート２６と仕切板１５との間に位置している。パッキン２９によって、仕切板１５と上プレート２６とを密着状態とすることにより、排気ダクト１４への粉粒体の漏れを防止する。 The upper plate 26 and the lower plate 27 are formed of a synthetic resin material such as ABS, and close the upper and lower sides of a substantially cylindrical filter filter 28. An opening 26 a is formed in the upper plate 26. The opening 26a is used for suction during operation and for blowing in pulsed air during wiping off. The filter body 28 is made of spunbond (a filter obtained by heat-bonding long fibers). The filter body 28 is not limited to a star-shaped and pleated substantially cylindrical shape, but may be a simple cylindrical shape. The packing 29 is located between the upper plate 26 and the partition plate 15. By causing the partition plate 15 and the upper plate 26 to be in close contact with each other by the packing 29, leakage of the granular material to the exhaust duct 14 is prevented.
　濾過体固定部材であるケージ３０は、例えば、厚さ１ｍｍ以下のステンレス製で、開口率５０％程度のパンチングメタルで製作されている。ケージ３０、略円筒形状とされ、フィルタ濾過体２８とほぼ同一の長さ（高さ）を有している。ケージ３０は、フィルタ濾過体２８の内部に収容されており、ケージ３０の上下両端部は、シリコン等の充填剤により固定されている。尚、ケージ３０の材質は、ステンレス等の鉄製以外の材質（例えば、樹脂製）でも良い。 The cage 30 that is a filter fixing member is made of, for example, a punching metal made of stainless steel having a thickness of 1 mm or less and an aperture ratio of about 50%. The cage 30 has a substantially cylindrical shape and has substantially the same length (height) as the filter body 28. The cage 30 is accommodated in the filter body 28, and the upper and lower ends of the cage 30 are fixed with a filler such as silicon. The cage 30 may be made of a material other than iron such as stainless steel (for example, resin).
　固定具３１…は、フィルタ濾過体２８の周方向に、等間隔で複数（例えば、５箇所）配置されている。尚、固定具３１…の配置数は、フィルタ濾過体２８の直径寸法により適宜の数を選定できる。各固定具３１…には、例えば、図４に示すように、バンド３２，３２と係合するように外周方向に開放する凹部３１ａ、又は、図５に示すように、バンド３２，３２が貫通するスリット３１ｂ、が形成されている。凹部３１ａ又はスリット３１ｂは、バンド３２，３２の幅及び厚さを考慮して、バンド３２，３２と凹部３１ａ又はスリット３１ｂとの間でガタの発生がしない寸法とするのが好ましい。 A plurality of fixtures 31 are arranged at equal intervals (for example, five locations) in the circumferential direction of the filter body 28. In addition, the number of arrangement | positioning of fixtures 31 ... can select an appropriate number with the diameter dimension of the filter body 28. FIG. For example, as shown in FIG. 4, a recess 31a that opens in the outer peripheral direction so as to engage with the bands 32, 32, or the bands 32, 32 penetrate as shown in FIG. A slit 31b is formed. In consideration of the width and thickness of the bands 32 and 32, the recess 31a or the slit 31b preferably has a size that does not cause backlash between the bands 32 and 32 and the recess 31a or the slit 31b.
　凹部３１ａの深さや、スリット３１ｂの形成位置は、固定具３１…をフィルタ濾過体２８に装着した状態で、凹部３１ａやスリット３１ｂがフィルタ濾過体２８の外周に接する付近に設定する。これにより、凹部３１ａやスリット３１ｂに取り付けられたバンド３２，３２の内周面を、フィルタ濾過体２８の外周面に密着させることが可能となる。固定具３１…に凹部３１ａを形成した場合、バンド３２，３２の巻き付け作業性が向上される。固定具３１…にスリット３１ｂを形成した場合、バンド３２，３２の巻き付け作業時を含めて、固定具３１…からのバンド３２，３２の脱落を抑制できる。尚、固定具３１…は複数個配置されるため、凹部３１ａを備えた固定具３１…と、スリット３１ｂを形成した固定具３１…とを混在して使用することも可能である。 The depth of the recess 31 a and the position where the slit 31 b is formed are set in the vicinity where the recess 31 a and the slit 31 b are in contact with the outer periphery of the filter filter 28 with the fixtures 31 attached to the filter filter 28. As a result, the inner peripheral surfaces of the bands 32 and 32 attached to the recess 31 a and the slit 31 b can be brought into close contact with the outer peripheral surface of the filter body 28. When the recessed portions 31a are formed in the fixtures 31 ..., the workability of winding the bands 32, 32 is improved. When the slits 31b are formed in the fixtures 31 ..., the bands 32, 32 can be prevented from falling off the fixtures 31 ... including the time when the bands 32, 32 are wound. Since a plurality of fixtures 31 are arranged, it is possible to use a mixture of the fixtures 31 provided with the recesses 31a and the fixtures 31 formed with the slits 31b.
　固定具３１…の材質は、ポリエステル製の織布（食品衛生法適合品を使用）であり、その厚さは０．５～１．５ｍｍ程度である。固定具３１…は、フィルタ濾過体２８の外周側山部と同方向に突出するように、二つ折りとされた状態で、フィルタ濾過体２８の外周側山部に載せられる。そして、固定具３１は、少なくとも、その稜線方向に沿う両縁部と、外周側山部とが、フィルタ濾過体２８に溶着される。本実施の形態においては、固定具３１…は、その全周縁部に跨って、超音波溶着機により、フィルタ濾過体２８に溶着されている。 The material of the fixing device 31 is a woven fabric made of polyester (using a food hygiene law compliant product), and its thickness is about 0.5 to 1.5 mm. The fixtures 31 are placed on the outer peripheral side peak portion of the filter filter body 28 in a folded state so as to protrude in the same direction as the outer peripheral side peak portion of the filter filter body 28. And the fixing tool 31 is welded to the filter body 28 at least the both edge parts along the ridgeline direction, and an outer peripheral side peak part. In the present embodiment, the fixtures 31 are welded to the filter filter body 28 by an ultrasonic welding machine over the entire peripheral edge thereof.
　このように、固定具３１…を二つ折りとすることにより、フィルタ濾過体２８の外周側山部に載せた状態で、容易に溶着作業を行うことができる。また、溶着面積を広く確保でき、強固な接合構造を確保することが可能となる。さらに、超音波溶着は、接合箇所を、微細な超音波振動と加圧力によって、瞬時に溶融接合する加工技術であることから、固定具３１…を、フィルタ濾過体２８の外周側山部に溶着する際に、超音波溶着を採用することにより、同材質の溶着であれば、母材強度に近いレベルまで強度を高く確保できる。また、超音波溶着は、作業場周囲環境（温度や湿度等）に影響され難く、安定した溶着作業を行うことが可能となる。 Thus, by fixing the fixtures 31 in half, the welding operation can be easily performed in a state where the fixtures 31 are folded on the outer peripheral side peak of the filter body 28. Further, a wide welding area can be secured, and a strong joining structure can be secured. Furthermore, since ultrasonic welding is a processing technique that instantaneously melts and joins joints with fine ultrasonic vibration and pressure, the fixtures 31 are welded to the outer peripheral side of the filter body 28. In this case, by adopting ultrasonic welding, if the same material is used for welding, the strength can be ensured to a level close to the strength of the base material. In addition, ultrasonic welding is not easily affected by the surrounding environment (temperature, humidity, etc.) of the workplace, and enables stable welding work to be performed.
　バンド３２，３２の材質は、ポリエステル製の織布（食品衛生法適合品を使用）であり、幅２０～３０ｍｍ、厚み０．５～１．５ｍｍ程度が好ましい。バンド３２，３２は、フィルタ濾過体２８の上下方向に、適宜間隔を存して二本配置されている。従って、上述した固定具３１…も、フィルタ濾過体２８の上下方向に、適宜間隔を存して配置される。この際、固定具３１を、上下でずらして配置することにより、フィルタ濾過体２８の同じ山部の外周に上下二つの固定具３１…を接合することがなくなり、フィルタ濾過体２８の外周側山部の強度を確保することができる。尚、バンド３２，３２の本数は、フィルタ装置１６，１６の全長（高さ）に応じて適宜本数を用いることができる。 The material of the bands 32 and 32 is a woven fabric made of polyester (using a product conforming to the Food Sanitation Law), and preferably has a width of 20 to 30 mm and a thickness of about 0.5 to 1.5 mm. Two bands 32 and 32 are arranged in the vertical direction of the filter body 28 with an appropriate interval. Accordingly, the above-described fixtures 31 are also arranged at appropriate intervals in the vertical direction of the filter body 28. At this time, by disposing the fixing tool 31 up and down, the upper and lower two fixing tools 31 are not joined to the outer periphery of the same peak portion of the filter filter 28, and the outer peripheral side peak of the filter filter 28 is eliminated. The strength of the part can be ensured. In addition, the number of the bands 32 and 32 can be suitably used according to the full length (height) of the filter apparatuses 16 and 16.
　バンド３２，３２の両端部同士は、そのラップ代（重なり代）を５～１０ｍｍ程度確保する。バンド３２，３２は、両者のラップ部分を、フィルタ濾過体２８の内側方向に互いに折り曲げた上で、超音波溶着によって締結される（図４参照）。尚、バンド３２，３２の両端ラップ代を、同様に５～１０ｍｍ程度確保し、そのラップ部分を、互いに内外に重ね合わせた状態で超音波溶着しても良い（図５参照）。 The wrap allowance (overlap allowance) of about 5 to 10 mm is secured between both ends of the bands 32 and 32. The bands 32 and 32 are fastened by ultrasonic welding after bending the lap portions of the bands 32 and 32 inward of the filter body 28 (see FIG. 4). It should be noted that the wrap margins at both ends of the bands 32 and 32 may be similarly secured by about 5 to 10 mm, and the lap portions may be ultrasonically welded in a state where they are overlapped with each other (see FIG. 5).
　粉粒体処理装置１１では、上記の構成において、本発明のフィルタ装置１６，１６を、粉粒体処理装置１１に取り付けた後、フィルタ濾過体２８への目詰まり防止のために、パルスエアを噴き付けて払い落としを行う。パルスエア噴き付けの際、フィルタ濾過体２８の外周に巻き付けたバンド３２，３２や、バンド３２，３２とフィルタ濾過体２８との接合箇所には、フィルタ濾過体２８が膨らもうとする方向の負荷が掛かる。 In the granular material processing device 11, in the above configuration, after the filter devices 16, 16 of the present invention are attached to the granular material processing device 11, pulse air is sprayed to prevent clogging of the filter filter 28. And then pay off. When the pulse air is sprayed, the load in the direction in which the filter filter 28 tends to swell at the bands 32 and 32 wound around the outer periphery of the filter filter 28 or the joints between the bands 32 and 32 and the filter filter 28. It takes.
　この際、本発明のバンド３２，３２の両端部同士、並びに、フィルタ濾過体２８と固定具３１…とは、超音波溶着によって、接着剤を使用することなく、高強度で接合されている。このため、これらの接合部の剥がれや、バンドの脱落等を抑制することができるばかりでなく、剥がれた接着剤が、造粒筒１２の底部１２ａに落ちることもない。従って、造粒筒１２の底部１２ａに堆積した回収粉体中への、接着剤のような異物の混入も抑制できる。また、超音波溶着による高強度な接合により、バンド等の接合部にすき間が発生しないため、フィルタ濾過体２８の洗浄も容易となる。 At this time, both ends of the bands 32 and 32 of the present invention, and the filter body 28 and the fixture 31 are joined with high strength by ultrasonic welding without using an adhesive. For this reason, it is possible not only to suppress peeling of these joints and dropping of the band, but also the peeled adhesive does not fall to the bottom 12a of the granulation tube 12. Accordingly, it is possible to prevent foreign substances such as an adhesive from being mixed into the collected powder deposited on the bottom 12a of the granulation cylinder 12. Further, since the gap is not generated in the joint portion such as a band due to the high-strength joining by the ultrasonic welding, the filter filter 28 can be easily cleaned.
　ところで、本発明のフィルタ装置１６，１６では、衛生上の目的や、造粒筒１２の底部１２ａに堆積した回収粉体を再利用する目的で、ＧＭＰ（Ｇｏｏｄ　Ｍａｎｕｆａｃｔｕｒｉｎｇ　Ｐｒａｃｔｉｃｅ）や、食品衛生法の基準に適合した材質を使用しているが、その使用目的等に応じて、適宜、他の材料を用いることもできる。また、本発明に係るフィルタ装置１６，１６の用途は、上述した粉粒体処理装置１１には限定されず、例えば、一般的な集塵用途に使用される集塵機等への適用も可能であり、その用途は多岐にわたる。 By the way, in the filter devices 16 and 16 of the present invention, GMP (Good Manufacturing Practice) or the Food Sanitation Law is used for the purpose of hygiene or the purpose of reusing the collected powder deposited on the bottom 12a of the granulation cylinder 12. A material that conforms to the standards is used, but other materials can be used as appropriate according to the purpose of use. Moreover, the use of the filter apparatus 16 and 16 which concerns on this invention is not limited to the granular material processing apparatus 11 mentioned above, For example, application to the dust collector etc. which are used for a general dust collection use is also possible. , Its uses are diverse.

Claims (5)

  1. 　平面投影方向の断面形状が星型でプリーツ状に形成された略円筒形状のフィルタ濾過体と、
    　該フィルタ濾過体の上下に配置されたプレートと、
    　前記フィルタ濾過体の内部に収容された濾過体固定部材と、
    　前記フィルタ濾過体の円周方向に適宜の間隔をおいて配置され、且つ、前記フィルタ濾過体の外周側山部に溶着固定された複数の固定具と、
    　前記フィルタ濾過体の外周に環装され、且つ、前記固定具に支持された状態で両端部同士が溶着締結された帯状のバンドと、を備えていることを特徴とするフィルタ装置。     A substantially cylindrical filter body formed in a pleated shape with a cross-sectional shape in a planar projection direction, and
    Plates disposed above and below the filter body;
    A filter body fixing member housed inside the filter body;
    A plurality of fixtures arranged at appropriate intervals in the circumferential direction of the filter filter, and welded and fixed to the outer peripheral side ridges of the filter filter;
    A filter device comprising: a belt-like band that is mounted around an outer periphery of the filter body and is welded and fastened at both ends while being supported by the fixture.
  2. 　前記バンドの両端部同士、及び、前記フィルタ濾過体の外周側山部と前記固定具とは、超音波溶着で溶着されていることを特徴とする請求項１に記載のフィルタ装置。 The filter device according to claim 1, wherein both end portions of the band and the outer peripheral side ridge portion of the filter body and the fixture are welded by ultrasonic welding.
  3. 　前記固定具には、前記バンドが係合するように外周方向に開放した凹部、又は、前記バンドが貫通するスリット、が形成されていることを特徴とする請求項１又は請求項２に記載のフィルタ装置。 The recessed part opened to the outer peripheral direction so that the said band may engage with the said fixing tool, or the slit which the said band penetrates is formed, The Claim 1 or Claim 2 characterized by the above-mentioned. Filter device.
  4. 　前記固定具は、前記フィルタ濾過体の前記外周側山部と同方向に突出するように二つ折りとされ、且つ、その稜線方向に沿う両縁部と前記外周側山部とが溶着されていることを特徴とする請求項１乃至請求項３に記載のフィルタ装置。 The fixture is folded in two so as to protrude in the same direction as the outer peripheral side peak of the filter body, and both edge portions along the ridge line direction and the outer peripheral side peak are welded. The filter device according to claim 1, wherein the filter device is a filter device.
  5. 　請求項１乃至請求項４の何れか１項に記載のフィルタ装置を配置した略円筒形状の造粒筒と、
    　ブロワーから導入されて清浄化した気体を、所定温度に調整した上で前記造粒筒内に供給して粉粒体を流動化させる給気ダクトと、
    　前記造粒筒内に供給された気体を、前記フィルタ装置を経由した後に筒外へと排出する排気ダクトと、を備えていることを特徴とする粉粒体処理装置。     A substantially cylindrical granulation cylinder in which the filter device according to any one of claims 1 to 4 is disposed;
    An air supply duct that fluidizes the granular material by supplying the purified gas introduced from the blower to a predetermined temperature after adjusting to a predetermined temperature;
    An exhaust duct that exhausts the gas supplied into the granulation cylinder to the outside after passing through the filter device.
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