WO2003061972A1 - Damping solution circulator and damping solution circulating method - Google Patents

Damping solution circulator and damping solution circulating method Download PDF

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Publication number
WO2003061972A1
WO2003061972A1 PCT/JP2003/000177 JP0300177W WO03061972A1 WO 2003061972 A1 WO2003061972 A1 WO 2003061972A1 JP 0300177 W JP0300177 W JP 0300177W WO 03061972 A1 WO03061972 A1 WO 03061972A1
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Prior art keywords
dampening
damping solution
circulating
potential
solution
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PCT/JP2003/000177
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French (fr)
Japanese (ja)
Inventor
Seiichi Mizuno
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S. T. Engineering Co., Ltd.
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Application filed by S. T. Engineering Co., Ltd. filed Critical S. T. Engineering Co., Ltd.
Publication of WO2003061972A1 publication Critical patent/WO2003061972A1/en

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    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/30—Treatment of water, waste water, or sewage by irradiation
    • C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
    • A61L2/02—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using physical phenomena
    • A61L2/08—Radiation
    • A61L2/10—Ultraviolet radiation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F7/00—Rotary lithographic machines
    • B41F7/20—Details
    • B41F7/24—Damping devices
    • B41F7/32—Ducts, containers, or like supply devices for liquids

Definitions

  • the present invention relates to a dampening solution circulating apparatus and a dampening solution circulating method for circulating dampening solution used in offset printing.
  • the fountain solution contains impurities such as paper dust, dust, oil and powder.
  • a fountain solution circulating device is connected to the watercraft of the printing unit.
  • the dampening water circulating system collects dampening water in the watercraft, filters it through a porous filter medium such as sponge filter, and regenerates and supplies fresh dampening water.
  • the pacifier in the air penetrates into the dampening water, even if the dampening water circulating device is used, the continuous use of the dampening water produces a bad smell. Therefore, in order to prevent the generation of offensive odor due to the pacteria, there is an apparatus in which an ultraviolet lamp is installed in the dampening water circulating device and the patters in the dampening water are killed by irradiating ultraviolet rays.
  • the filter used for the dampening water circulation device is usually about 25 to 50 m even with a fine filter.
  • the dampening solution after filtration is turbid, and the transparency is not so high. Therefore, since the light of the UV lamp does not sufficiently reach the dampening water, it cannot be said that the sterilizing effect of the UV irradiation is sufficiently exerted.
  • a dampening water circulating treatment apparatus and dampening water circulating apparatus which improve the transparency of dampening water and sufficiently disperse ultraviolet rays from an ultraviolet lamp or the like to enhance the sterilizing effect.
  • a ring treatment method is provided. Disclosure of the invention
  • the dampening water circulation treatment device of the present invention is a dampening water circulation treatment device that circulates and purifies dampening water used for offset printing, and adsorbs a zero potential in the middle of a circulation path that circulates dampening water. It is characterized by comprising a potential adsorption filter device utilizing the action, and further comprising an ultraviolet irradiation device for irradiating the dampening solution with ultraviolet light at a stage subsequent to the potential adsorption filter device.
  • the dampening solution circulation treatment method of the present invention is a dampening solution circulation treatment method for circulating and purifying dampening solution used for offset printing, wherein the dampening solution is filtered by the adsorption action of the Zee-potential, It is characterized by irradiating ultraviolet rays.
  • Fine particles of impurities such as paper dust, dust, oil and powder contained in the fountain solution that is, suspensions of the fountain solution and a diameter of about 0.4 to 10 m that affect the transparency
  • the fine particle component cannot be removed by a filter made of a usual porous filter medium.
  • these fine particle components generally show a negative potential, they can be adsorbed and removed by the adsorption action of a positive zero-night potential.
  • the fine particles contained in the dampening solution that is, the components for suspending the dampening solution are adsorbed and removed by the potential adsorption filter device. Since the transparency of water can be improved, the ultraviolet rays irradiated by the ultraviolet irradiation device at the subsequent stage can sufficiently spread to the dampening water, and the sterilizing effect of the ultraviolet rays can be enhanced. Further, since the dampening solution does not become turbid even when used for a long period of time, it can be recycled without being discarded, and the running cost of the dampening solution can be reduced. Moreover, in this way by performing the offset printing using the purified dampening water, a brief description of the c drawing can improve the print quality
  • FIG. 1 is a system diagram of a dampening water circulation treatment device according to an embodiment of the present invention.
  • FIG. 2 is a partially cutaway perspective view of a potential adsorption cartridge housed in a housing of the potential adsorption filter device shown in FIG. 1, and
  • FIG. 3 is a perspective view of the ultraviolet irradiation device shown in FIG. BEST MODE FOR CARRYING OUT THE INVENTION
  • FIG. 1 is a system diagram of a dampening water circulation treatment device according to an embodiment of the present invention.
  • the dampening solution circulating treatment apparatus 1 introduces dampening solution used for an offset rotary printing press from an inlet 8a (upstream side) and draws it out from an outlet 8b (downstream side).
  • the circulation paths 9a, 9b, 9c, and 9d are circulated.
  • a pump device 4 for forcibly circulating dampening water is circulated between the circulation paths 9a and 9b, and a potential adsorption filter device 2 that utilizes zeta potential adsorption is circulated between the circulation paths 9b and 9c.
  • An ultraviolet irradiation device 3 for irradiating the dampening solution with ultraviolet light is disposed between the roads 9c and 9d.
  • the dampening water circulation treatment device 1 reduces the pressure difference between the circulation paths 9 b and 9 d outside the potential adsorption filter device 2 and the ultraviolet irradiation device 3, that is, on the inlet 8 a side and the outlet 8 b side.
  • a differential pressure transmitter 5 as a differential pressure detector that detects and issues a detection signal, and a rotating light 6 as an alarm device that issues an alarm according to the detection level of the detection signal of the differential pressure transmitter 5 are provided.
  • FIG. 2 is a partially cutaway perspective view of a potential adsorption cartridge accommodated in a housing of the potential adsorption filter device 2 shown in FIG.
  • the potential attraction filter device 2 accommodates a potential attraction cartridge 20 as a replaceable potential attraction filter in a housing.
  • the potential attraction force 20 is made of polypropylene, which consists of a medium 21 composed mainly of resin and cellulose, a polypropylene separator 22 and an edge seal 23 sandwiching a polypropylene ring seal 24. Assembled with core 25.
  • a certain potential difference is generated at the interface where different phases are in contact, and the part of the electric double layer generated at the particle interface that does not play a dynamic role (fixed layer) and plays a dynamic role There is a part (diffusion layer).
  • the electrical phenomenon that occurs at the interface only when there is relative motion between different phases is called electrokinetic phenomenon, and the potential existing there is called the electrokinetic potential or zeta potential.
  • the zeta potential is a physical phenomenon due to the characteristics of fine particles, similar to the Tyndall phenomenon and Brownian motion. Generally, microparticles and microorganisms in a liquid show a negative potential.
  • Fine particles such as ink, paper powder, and oil contained in the dampening solution also show a negative potential, whereas the media 21 in the potential adsorption filter device 2 has a property of having a positive zeta potential, so These fine particles, which cannot be removed even by a membrane filter of this kind, can be adsorbed and removed. Further, according to such a potential adsorption action, it is possible to remove the fine particle component without applying pressure to the dampening solution passing through the potential adsorption filter device 2.
  • the differential pressure transmitter 5 detects the differential pressure between circulation path 9 b, 9 d, the differential pressure 2. a 2 kg Z cm 2 greater When this happens, the revolving light 6 is turned on and an alarm is issued. Since the pressure difference of the medium 21 in the potential attraction filter device 2 rises sharply at the limit point of its adsorption capacity, the increase in the pressure difference is detected, and the operator is notified of the time to replace the potential attraction filter device 2 by notifying the operator. However, the flow rate of the dampening solution is prevented from deviating from the set value.
  • FIG. 3 is a perspective view of the ultraviolet irradiation device 3 shown in FIG.
  • the ultraviolet irradiation device 3 shown in FIG. 3 has an inlet flange 31 connected to the circulation path 9 c and an outlet flange 32 connected to the circulation path 9 d at both ends of a hollow body 30. Further, an ultraviolet irradiation unit 33 is provided. The ultraviolet irradiation unit 33 inserts an ultraviolet lamp 34 into the body 30 and irradiates the dampening solution passing through the body 30 with ultraviolet rays. The ultraviolet irradiation unit 33 is detachable from the body 30, and maintenance is performed by periodically replacing the ultraviolet lamp 34.
  • the dampening water circulation treatment apparatus 1 having the above configuration is used by being connected to a watercraft 12 of an offset rotary printing press.
  • the watercraft 1 2 is the plate of the web offset press 1 6
  • a part of the damping part 11 provided above is provided, and the damping part 11 is provided with a plurality of rollers 13, 14, and 15 in order from the watercraft 12 to the plate 16.
  • the dampening water circulation treatment device 1 is connected to the watercraft 12 by connecting lines 10a and 10b.
  • the connecting line 10a is connected to the inlet 8a of the dampening water circulation treatment device 1, and the connecting line 10b is connected to the outlet 8b.
  • the dampening water in the watercraft 12 is forcibly sent into the circulation path 9a by the pump device 4.
  • the dampening water in the watercraft 1 2 is introduced through the connection 10 a
  • the liquid enters the circulation path 9a from 8a, and is guided into the potential adsorption filter device 2 through the circulation path 9b.
  • the potential adsorption filter device 2 fine particles such as ink, paper powder, and oil contained in the dampening solution are adsorbed and removed by the zeta potential adsorbing action.
  • the fine particle component can be removed without applying pressure to the dampening solution passing through the potential adsorption filter device 2.
  • the fountain solution guided into the ultraviolet irradiation device 3 through the circulation path 9c is sterilized by being irradiated with ultraviolet rays by the ultraviolet lamp 34, and the circulation path 9d and the connection path 10b are passed through. It is returned to the watercraft 1 through 2.
  • the fine particle component contained in the dampening water is adsorbed and removed by the potential adsorption filter device 2, and then the ultraviolet light is irradiated by the ultraviolet irradiation device 3 to sterilize.
  • the transparency of the dampening solution can be improved by adsorbing and removing the components that suspend the dampening solution by the potential adsorption filter device 2, so that the ultraviolet light irradiated by the ultraviolet irradiation device 3 at the subsequent stage can dampen the dampening water.
  • Water has become more widely used, and it is possible to increase the sterilizing effect of ultraviolet rays. Therefore, according to the dampening water circulation treatment device 1 in the present embodiment, the circulation paths 9a to 9
  • Components such as BOD, CO D. norhex value and SS are reduced while maintaining a predetermined flow rate by the potential adsorption filter device 2 and ultraviolet irradiation device 3 provided in the middle of 9 d, and further sterilized. Since the dampening solution does not become turbid even when used for a long period of time, it can be recycled without being discarded.
  • the dampening solution circulating apparatus and the dampening solution circulating method of the present invention are suitable for circulating dampening solution used in offset printing.

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  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Organic Chemistry (AREA)
  • Epidemiology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Toxicology (AREA)
  • Mechanical Engineering (AREA)
  • Hydrology & Water Resources (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Physical Water Treatments (AREA)
  • Rotary Presses (AREA)
  • Filtering Materials (AREA)
  • Filtration Of Liquid (AREA)

Abstract

A damping solution circulator and a damping solution circulating method in which sterilization effect is enhanced by enhancing the transparency of damping solution thereby spreading UV-rays from a UV lamp, or the like, sufficiently. The damping solution circulator (1) comprises a potential adsorption filter (2) utilizing the absorbing action of zeta potential provided in the middle of a passage for circulating the damping solution, and a UV-ray irradiator (3) disposed at the post-stage of the potential adsorption filter (2) and irradiating the damping solution with UV-rays. Since components suspending in the damping solution are adsorbed through the potential adsorption filter (2) and removed, transparency of the damping solution can be enhanced and since UV-rays irradiated from the UV-ray irradiator (3) at the post-stage is spread sufficiently into the damping solution, sterilization effect of UV-rays can be enhanced.

Description

明 細 書 湿し水循環処理装置および湿し水循環処理方法 技術分野  Description Document dampening water circulation treatment device and dampening water circulation treatment method
本発明は、オフセット印刷に用いられる湿し水を循環処理する湿し水循環処理装 置およぴ湿し水循環処理方法に関する。 背景技術  The present invention relates to a dampening solution circulating apparatus and a dampening solution circulating method for circulating dampening solution used in offset printing. Background art
オフセット印刷では、高品質な印刷を行うために湿し水の管理は極めて重要であ る。 印刷中、 湿し水には、 紙粉、 粉塵、 油やパウダー等の不純物が入り込む。 この ように不純物が含まれた湿し水を浄化するため、印刷ュニットの水舟には湿し水循 環装置が接続される。湿し水循環装置は、水舟内の湿し水を回収してスポンジフィ ル夕等の多孔性濾材により濾過し、 新鮮な湿し水に再生して供給するものである。 また、湿し水には空気中のパクテリァが侵入することから、湿し水循環装置を用 いても湿し水を連続的に使用すると悪臭を発生するようになる。 したがって、 この パクテリアによる悪臭の発生を防止するため、湿し水循環装置に紫外線ランプを設 け、紫外線を照射することによって湿し水中のパクテリァを死滅させるようにした ものがある。  In offset printing, fountain solution management is extremely important for high quality printing. During printing, the fountain solution contains impurities such as paper dust, dust, oil and powder. In order to purify the fountain solution containing such impurities, a fountain solution circulating device is connected to the watercraft of the printing unit. The dampening water circulating system collects dampening water in the watercraft, filters it through a porous filter medium such as sponge filter, and regenerates and supplies fresh dampening water. In addition, since the pacifier in the air penetrates into the dampening water, even if the dampening water circulating device is used, the continuous use of the dampening water produces a bad smell. Therefore, in order to prevent the generation of offensive odor due to the pacteria, there is an apparatus in which an ultraviolet lamp is installed in the dampening water circulating device and the patters in the dampening water are killed by irradiating ultraviolet rays.
ところが、 通常、 湿し水循環装置に用いられるフィルタは、 細かい目のものであ つても 2 5〜5 0 m程度である。このようなフィルタを用いた湿し水循環装置で は、 濾過後の湿し水は濁っており、 透明度があまり高くない。 したがって、 紫外線 ランプの光が湿し水中に充分に行き渡らないため、紫外線照射による殺菌効果を充 分に発揮できているとはいえない。  However, the filter used for the dampening water circulation device is usually about 25 to 50 m even with a fine filter. In a dampening solution circulating apparatus using such a filter, the dampening solution after filtration is turbid, and the transparency is not so high. Therefore, since the light of the UV lamp does not sufficiently reach the dampening water, it cannot be said that the sterilizing effect of the UV irradiation is sufficiently exerted.
そこで、 本発明においては、 湿し水の透明度を向上し、 紫外線ランプ等からの紫 外線を充分に行き渡らせて殺菌効果を高めた湿し水循環処理装置および湿し水循 環処理方法を提供する。 発明の開示 Therefore, in the present invention, a dampening water circulating treatment apparatus and dampening water circulating apparatus which improve the transparency of dampening water and sufficiently disperse ultraviolet rays from an ultraviolet lamp or the like to enhance the sterilizing effect. A ring treatment method is provided. Disclosure of the invention
本発明の湿し水循環処理装置は、オフセット印刷に用いられる湿し水を循環させ 浄化処理する湿し水循環処理装置であって、湿し水を循環させる循環路の途中にゼ 一夕電位の吸着作用を利用した電位吸着フィルタ装置を備え、さらに電位吸着フィ ル夕装置の後段に湿し水へ紫外線を照射する紫外線照射装置を備えたことを特徴 とするものである。 また、 本発明の湿し水循環処理方法は、 オフセット印刷に用い られる湿し水を循環させ浄化処理する湿し水循環処理方法であって、湿し水をゼー 夕電位の吸着作用により濾過した後、 紫外線を照射することを特徴とする。  The dampening water circulation treatment device of the present invention is a dampening water circulation treatment device that circulates and purifies dampening water used for offset printing, and adsorbs a zero potential in the middle of a circulation path that circulates dampening water. It is characterized by comprising a potential adsorption filter device utilizing the action, and further comprising an ultraviolet irradiation device for irradiating the dampening solution with ultraviolet light at a stage subsequent to the potential adsorption filter device. Further, the dampening solution circulation treatment method of the present invention is a dampening solution circulation treatment method for circulating and purifying dampening solution used for offset printing, wherein the dampening solution is filtered by the adsorption action of the Zee-potential, It is characterized by irradiating ultraviolet rays.
湿し水に含まれる紙粉、 粉塵、 油やパウダー等の不純物のうちの微粒子成分、 す なわち湿し水を懸濁させ、その透明度に影響を与える直径 0. 4〜1 0 m程度の 微粒子成分は、 通常の多孔性濾材からなるフィルタでは除去できない。 しかし、 こ れらの微粒子成分は一般にマイナスの電位を示すため、プラスのゼ一夕電位の吸着 作用によって吸着し、 除去することが可能である。  Fine particles of impurities such as paper dust, dust, oil and powder contained in the fountain solution, that is, suspensions of the fountain solution and a diameter of about 0.4 to 10 m that affect the transparency The fine particle component cannot be removed by a filter made of a usual porous filter medium. However, since these fine particle components generally show a negative potential, they can be adsorbed and removed by the adsorption action of a positive zero-night potential.
したがって、本発明の湿し水循環処理装置によれば、電位吸着フィルタ装置によ つて湿し水に含まれる微粒子成分、すなわち、湿し水を懸濁させる成分を吸着して 除去することで湿し水の透明度を向上させることができるため、後段の紫外線照射 装置によって照射する紫外線が湿し水へ充分に行き渡るようになり、紫外線による 殺菌効果を高めることができる。 また、 この湿し水は、 長期間にわたって使用して も濁ることがないため、廃棄することなくリサイクルすることが可能となり、湿し 水のランニングコストを抑えることが可能となる。 また、 こうして精製された湿し 水を用いてオフセット印刷を行うことにより、印刷品質を向上させることができる c 図面の簡単な説明 Therefore, according to the dampening solution circulating treatment apparatus of the present invention, the fine particles contained in the dampening solution, that is, the components for suspending the dampening solution are adsorbed and removed by the potential adsorption filter device. Since the transparency of water can be improved, the ultraviolet rays irradiated by the ultraviolet irradiation device at the subsequent stage can sufficiently spread to the dampening water, and the sterilizing effect of the ultraviolet rays can be enhanced. Further, since the dampening solution does not become turbid even when used for a long period of time, it can be recycled without being discarded, and the running cost of the dampening solution can be reduced. Moreover, in this way by performing the offset printing using the purified dampening water, a brief description of the c drawing can improve the print quality
図 1は、本発明の実施の形態における湿し水循環処理装置の系統図であり、 図 2 は、図 1に示す電位吸着フィル夕装置のハウジング内に収容される電位吸着カート リッジの一部切り欠き斜視図であり、 図 3は、 図 1に示す紫外線照射装置の斜視図 である。 発明を実施するための最良の形態 FIG. 1 is a system diagram of a dampening water circulation treatment device according to an embodiment of the present invention. FIG. 2 is a partially cutaway perspective view of a potential adsorption cartridge housed in a housing of the potential adsorption filter device shown in FIG. 1, and FIG. 3 is a perspective view of the ultraviolet irradiation device shown in FIG. BEST MODE FOR CARRYING OUT THE INVENTION
図 1は本発明の実施の形態における湿し水循環処理装置の系統図である。  FIG. 1 is a system diagram of a dampening water circulation treatment device according to an embodiment of the present invention.
本発明の実施の形態における湿し水循環処理装置 1は、オフセッ ト輪転印刷機に 用いられる湿し水を導入口 8 a (上流側） から導入し、 導出口 8 b (下流側） から 導出することにより循環路 9 a , 9 b , 9 c , 9 dを循環させるものである。 循環 路 9 a , 9 b間には湿し水を強制的に循環させるポンプ装置 4を、 循環路 9 b , 9 c間にはゼータ電位の吸着作用を利用した電位吸着フィルタ装置 2を、循環路 9 c， 9 d間には湿し水へ紫外線を照射する紫外線照射装置 3をそれぞれ配置している。 さらに、湿し水循環処理装置 1は、電位吸着フィルタ装置 2および紫外線照射装 置 3よりも外側、すなわち導入口 8 a側と導出口 8 b側の循環路 9 b， 9 d間の差 圧を検知して検知信号を発する差圧検知装置としての差圧発信機 5と、この差圧発 信機 5の検知信号の検知レベルに応じて警報を発する警報装置としての回転灯 6 とを備える。  The dampening solution circulating treatment apparatus 1 according to the embodiment of the present invention introduces dampening solution used for an offset rotary printing press from an inlet 8a (upstream side) and draws it out from an outlet 8b (downstream side). Thus, the circulation paths 9a, 9b, 9c, and 9d are circulated. A pump device 4 for forcibly circulating dampening water is circulated between the circulation paths 9a and 9b, and a potential adsorption filter device 2 that utilizes zeta potential adsorption is circulated between the circulation paths 9b and 9c. An ultraviolet irradiation device 3 for irradiating the dampening solution with ultraviolet light is disposed between the roads 9c and 9d. In addition, the dampening water circulation treatment device 1 reduces the pressure difference between the circulation paths 9 b and 9 d outside the potential adsorption filter device 2 and the ultraviolet irradiation device 3, that is, on the inlet 8 a side and the outlet 8 b side. A differential pressure transmitter 5 as a differential pressure detector that detects and issues a detection signal, and a rotating light 6 as an alarm device that issues an alarm according to the detection level of the detection signal of the differential pressure transmitter 5 are provided.
図 2は図 1に示す電位吸着フィルタ装置 2のハウジング内に収容される電位吸 着カートリッジの一部切り欠き斜視図である。  FIG. 2 is a partially cutaway perspective view of a potential adsorption cartridge accommodated in a housing of the potential adsorption filter device 2 shown in FIG.
電位吸着フィルタ装置 2は、ハウジング内に交換可能な電位吸着フィルタとして 電位吸着カートリッジ 2 0を収容したものである。 電位吸着力一トリッジ 2 0は、 主に樹脂、 セルロースによって構成されたメディア 2 1、 ポリプロピレン製セパレ 一夕 2 2およびエッジシール 2 3からなるセルを、ポリプロピレン製リングシール 2 4を挟みながらポリプロピレン製芯 2 5で組み立てたものである。  The potential attraction filter device 2 accommodates a potential attraction cartridge 20 as a replaceable potential attraction filter in a housing. The potential attraction force 20 is made of polypropylene, which consists of a medium 21 composed mainly of resin and cellulose, a polypropylene separator 22 and an edge seal 23 sandwiching a polypropylene ring seal 24. Assembled with core 25.
—般に異相の接触する界面にはある電位差を生じ、粒子界面に生じた電気二重層 による電位のうち、 動的な役割を演じない部分 （固定層） と、 動的な役割を演ずる 部分 （拡散層） がある。 異相間において、 相対運動がある場合にのみ、 その界面に 起こる電気的な現象を界面動電現象といい、そこに存在する電位を界面動電位また はゼータ電位といわれる。 ゼータ電位は、 チンダル現象やブラウン運動と同様、 微 細粒子の特性による物理現象であり、一般に液体中で微粒子や微生物等は、 マイナ スの電位を示す。 In general, a certain potential difference is generated at the interface where different phases are in contact, and the part of the electric double layer generated at the particle interface that does not play a dynamic role (fixed layer) and plays a dynamic role There is a part (diffusion layer). The electrical phenomenon that occurs at the interface only when there is relative motion between different phases is called electrokinetic phenomenon, and the potential existing there is called the electrokinetic potential or zeta potential. The zeta potential is a physical phenomenon due to the characteristics of fine particles, similar to the Tyndall phenomenon and Brownian motion. Generally, microparticles and microorganisms in a liquid show a negative potential.
湿し水に含まれるインキ、紙粉や油などの微粒子もマイナスの電位を示し、 これ に対して電位吸着フィルタ装置 2内のメディア 2 1は、プラスのゼータ電位を持つ 性質があるため、通常のメンブランフィルタによっても除去できないこれらの微粒 子を吸着し、 除去することができる。 また、 このような電位吸着作用によれば、 電 位吸着フィルタ装置 2を通過させる湿し水に圧力をかけることなく微粒子成分を 除去することが可能である。  Fine particles such as ink, paper powder, and oil contained in the dampening solution also show a negative potential, whereas the media 21 in the potential adsorption filter device 2 has a property of having a positive zeta potential, so These fine particles, which cannot be removed even by a membrane filter of this kind, can be adsorbed and removed. Further, according to such a potential adsorption action, it is possible to remove the fine particle component without applying pressure to the dampening solution passing through the potential adsorption filter device 2.
なお、本実施形態における湿し水循環処理装置 1では、差圧発信機 5によって循 環路 9 b , 9 d間の差圧を検知し、 この差圧が 2. 2 k g Z c m2超となったとき に回転灯 6を点灯させ警報を発するようにしている。電位吸着フィルタ装置 2内の メディア 2 1は、その吸着能力の限界点となると差圧が急上昇するため、 この差圧 の上昇を検知し、電位吸着フィルタ装置 2の交換時期をオペレータに知らせること によって、 湿し水の流量が設定値から外れるのを防止するようにしている。 In dampening in the present embodiment water circulating processing apparatus 1, the differential pressure transmitter 5 detects the differential pressure between circulation path 9 b, 9 d, the differential pressure 2. a 2 kg Z cm 2 greater When this happens, the revolving light 6 is turned on and an alarm is issued. Since the pressure difference of the medium 21 in the potential attraction filter device 2 rises sharply at the limit point of its adsorption capacity, the increase in the pressure difference is detected, and the operator is notified of the time to replace the potential attraction filter device 2 by notifying the operator. However, the flow rate of the dampening solution is prevented from deviating from the set value.
図 3は図 1に示す紫外線照射装置 3の斜視図である。  FIG. 3 is a perspective view of the ultraviolet irradiation device 3 shown in FIG.
図 3に示す紫外線照射装置 3は、循環路 9 cに接続する導入口フランジ 3 1およ び循環路 9 dに接続する導出口フランジ 3 2を両端部に備えた中空の胴体 3 0の 途中に、紫外線照射ュニット 3 3を備えたものである。紫外線照射ュニッ ト 3 3は、 紫外線ランプ 3 4を胴体 3 0内に挿入し、胴体 3 0内を通過する湿し水に紫外線を 照射するものである。 また、紫外線照射ュニット 3 3は胴体 3 0から着脱可能であ り、 定期的に紫外線ランプ 3 4を交換するなどしてメンテナンスを行う。  The ultraviolet irradiation device 3 shown in FIG. 3 has an inlet flange 31 connected to the circulation path 9 c and an outlet flange 32 connected to the circulation path 9 d at both ends of a hollow body 30. Further, an ultraviolet irradiation unit 33 is provided. The ultraviolet irradiation unit 33 inserts an ultraviolet lamp 34 into the body 30 and irradiates the dampening solution passing through the body 30 with ultraviolet rays. The ultraviolet irradiation unit 33 is detachable from the body 30, and maintenance is performed by periodically replacing the ultraviolet lamp 34.
上記構成の湿し水循環処理装置 1は、 図 1に示すように、 オフセット輪転印刷機 の水舟 1 2に接続して用いる。 ここで、水舟 1 2はオフセット輪転印刷機の版 1 6 上に設ける湿し部 1 1の一部を構成し、湿し部 1 1は水舟 1 2から版 1 6へ順に複 数のローラ 1 3， 1 4 , 1 5を備える。 湿し水循環処理装置 1は、 水舟 1 2と連結 路 1 0 a， 1 0 bによって接続する。連結路 1 0 aは湿し水循環処理装置 1の導入 口 8 aに、 連結路 1 0 bは導出口 8 bにそれぞれ接続する。 As shown in FIG. 1, the dampening water circulation treatment apparatus 1 having the above configuration is used by being connected to a watercraft 12 of an offset rotary printing press. Here, the watercraft 1 2 is the plate of the web offset press 1 6 A part of the damping part 11 provided above is provided, and the damping part 11 is provided with a plurality of rollers 13, 14, and 15 in order from the watercraft 12 to the plate 16. The dampening water circulation treatment device 1 is connected to the watercraft 12 by connecting lines 10a and 10b. The connecting line 10a is connected to the inlet 8a of the dampening water circulation treatment device 1, and the connecting line 10b is connected to the outlet 8b.
以上の構成において、水舟 1 2内の湿し水は、 ポンプ装置 4によって強制的に循 環路 9 a内に送り込まれる。水舟 1 2内の湿し水は、連結路 1 0 aを介して導入口 In the above configuration, the dampening water in the watercraft 12 is forcibly sent into the circulation path 9a by the pump device 4. The dampening water in the watercraft 1 2 is introduced through the connection 10 a
8 aより循環路 9 a内に入り、循環路 9 bを通して電位吸着フィルタ装置 2内へと 導かれる。電位吸着フィルタ装置 2内ではゼータ電位の吸着作用によって、湿し水 に含まれるインキ、 紙粉や油などの微粒子成分が吸着、 除去される。 The liquid enters the circulation path 9a from 8a, and is guided into the potential adsorption filter device 2 through the circulation path 9b. In the potential adsorption filter device 2, fine particles such as ink, paper powder, and oil contained in the dampening solution are adsorbed and removed by the zeta potential adsorbing action.
このように電位吸着作用により微粒子成分を吸着、除去させることにより、電位 吸着フィルタ装置 2を通過させる湿し水に圧力をかけることなく微粒子成分を除 去させることが可能となる。 さらに、循環路 9 cを介して紫外線照射装置 3内に導 かれた湿し水は、紫外線ランプ 3 4によって紫外線が照射されることにより殺菌さ れ、 循環路 9 dおよび連結路 1 0 bを介して水舟 1 2内へと戻される。  By adsorbing and removing the fine particle component by the potential adsorption action in this way, the fine particle component can be removed without applying pressure to the dampening solution passing through the potential adsorption filter device 2. Further, the fountain solution guided into the ultraviolet irradiation device 3 through the circulation path 9c is sterilized by being irradiated with ultraviolet rays by the ultraviolet lamp 34, and the circulation path 9d and the connection path 10b are passed through. It is returned to the watercraft 1 through 2.
このように本実施形態における湿し水循環処理装置 1では、電位吸着フィルタ装 置 2によって湿し水に含まれる微粒子成分を吸着して除去した後、紫外線照射装置 3によって紫外線を照射し殺菌する。すなわち、電位吸着フィルタ装置 2によって 湿し水を懸濁させる成分を吸着して除去することで湿し水の透明度を向上させる ことができるため、後段の紫外線照射装置 3によって照射する紫外線が湿し水へ充 分に行き渡るようになり、紫外線による殺菌効果を高めることが可能となっている。 したがって、 本実施形態における湿し水循環処理装置 1によれば、循環路 9 a〜 As described above, in the dampening solution circulating treatment apparatus 1 of the present embodiment, the fine particle component contained in the dampening water is adsorbed and removed by the potential adsorption filter device 2, and then the ultraviolet light is irradiated by the ultraviolet irradiation device 3 to sterilize. In other words, the transparency of the dampening solution can be improved by adsorbing and removing the components that suspend the dampening solution by the potential adsorption filter device 2, so that the ultraviolet light irradiated by the ultraviolet irradiation device 3 at the subsequent stage can dampen the dampening water. Water has become more widely used, and it is possible to increase the sterilizing effect of ultraviolet rays. Therefore, according to the dampening water circulation treatment device 1 in the present embodiment, the circulation paths 9a to 9
9 dの途中に備えられた電位吸着フィルタ装置 2と紫外線照射装置 3とによって、 所定の流量を維持したまま B O D、 C O D. ノルへキ値および S S等の成分が低減 され、 さらに殺菌された湿し水は、長期間にわたつて使用しても濁ることがないた め、 廃棄することなくリサイクルすることが可能となる。 Components such as BOD, CO D. norhex value and SS are reduced while maintaining a predetermined flow rate by the potential adsorption filter device 2 and ultraviolet irradiation device 3 provided in the middle of 9 d, and further sterilized. Since the dampening solution does not become turbid even when used for a long period of time, it can be recycled without being discarded.
その結果、湿し水の廃液が発生することがなく、廃液処理を外部に委託する必要 もなくなるので、オフセット印刷に用いる湿し水のランニングコストを抑えること が可能となる。 また、 こうして精製された湿し水を用いてオフセット印刷を行うこ とにより、 印刷品質を向上させることができる。 産業上の利用可能性 As a result, no fountain solution waste liquid is generated and it is necessary to outsource waste liquid treatment. This eliminates the running cost of the dampening solution used for offset printing. Further, by performing offset printing using the fountain solution thus purified, print quality can be improved. Industrial applicability
以上のように、 本発明の湿し水循環処理装置および湿し水循環処理方法は、 オフセット印刷に用いられる湿し水を循環処理するのに適している。  As described above, the dampening solution circulating apparatus and the dampening solution circulating method of the present invention are suitable for circulating dampening solution used in offset printing.

Claims

求 の 範 囲 Range of request
1 .オフセット印刷に用いられる湿し水を循環させ浄化処理する湿し水循環処理装 置であって、前記湿し水を循環させる循環路の途中にゼ一タ電位の吸着作用を利用 した電位吸着フィルタ装置を備え、さらに同電位吸着フィルタ装置の後段に前記湿 し水へ紫外線を照射する紫外線照射装置を備えたことを特徴とする湿し水循環処 1. A dampening solution circulating apparatus for circulating and cleaning a dampening solution used for offset printing, wherein potential adsorption is performed in the circulation path for circulating the dampening solution using a zeta potential adsorbing action. A dampening solution circulating process, comprising: a filter device; and an ultraviolet irradiation device that irradiates the dampening solution with ultraviolet light at a subsequent stage of the same potential adsorption filter device.
2.オフセット印刷に用いられる湿し水を循環させ浄化処理する湿し水循環処理方 法であって、前記湿し水をゼ一タ電位の吸着作用により濾過した後、紫外線を照射 することを特徴とする湿し水循環処理方法。 2. A fountain solution circulating treatment method for circulating and cleaning a fountain solution used for offset printing, wherein the fountain solution is filtered by zeta potential adsorption and then irradiated with ultraviolet light. And a dampening water circulation treatment method.
PCT/JP2003/000177 2002-01-18 2003-01-14 Damping solution circulator and damping solution circulating method WO2003061972A1 (en)

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US20100147174A1 (en) * 2007-02-05 2010-06-17 Mitsuru Takei Device for making damping solution by reducing surface tension of water used for offset printing method, which is lithographic printing method
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JP5523734B2 (en) * 2009-04-22 2014-06-18 アルプス工業株式会社 Drain water purification device
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JPH0390940U (en) * 1989-12-28 1991-09-17
JP2000351193A (en) * 1999-06-10 2000-12-19 St Engineering Kk Damping water circulating treatment apparatus and method

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0390940U (en) * 1989-12-28 1991-09-17
JP2000351193A (en) * 1999-06-10 2000-12-19 St Engineering Kk Damping water circulating treatment apparatus and method

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