JP2012127030A - Drying device for wet paper and used paper recycling apparatus - Google Patents

Drying device for wet paper and used paper recycling apparatus Download PDF

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JP2012127030A
JP2012127030A JP2010280658A JP2010280658A JP2012127030A JP 2012127030 A JP2012127030 A JP 2012127030A JP 2010280658 A JP2010280658 A JP 2010280658A JP 2010280658 A JP2010280658 A JP 2010280658A JP 2012127030 A JP2012127030 A JP 2012127030A
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wet paper
drying
paper
drying roller
peripheral surface
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Akira Wada
和田　　晃
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Duplo Seiko Corp
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/64—Paper recycling

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Abstract

PROBLEM TO BE SOLVED: To provide a drying device for a wet paper, which can reduce the quantity of heat necessary for the heating in heating means and can efficiently dry the wet paper, and to provide a used paper recycling apparatus provided with the drying device for the wet paper.SOLUTION: In the drying device V for the wet paper which comprises: a conveyor belt 16 for conveying the wet paper in a wet state; and a drying roller 50 which winds the conveyor belt 16 around the outer peripheral surface and has heating means 63 for heating the wet paper provided therein, and heats the wet paper conveyed by the conveyor belt 16 by using heating means 62 and dries the wet paper, the drying device V for the wet paper further has a covering member 53 for covering the outer peripheral surface of the drying roller 50 provided at a position that is in the outer peripheral surface of the drying roller 50 and the vicinity of a portion at which the conveyor belt 16 is wound.

Description

本発明は湿紙の乾燥装置及び古紙再生処理装置に関するものである。   The present invention relates to a wet paper drying apparatus and a used paper recycling apparatus.

従来、紙原料としてのパルプ懸濁液を抄紙し、得られた湿紙を乾燥する湿紙の乾燥装置が知られており、下記特許文献１には、乾燥用のシリンダーの外周面であって、帯状の湿紙が巻回されていない外周面露出部分に対向した位置に、該外周面露出部分を覆う状態に円弧状断熱蓋を配設した帯材乾燥装置に関する技術が開示されている。 Conventionally, there has been known a wet paper drying apparatus for making a pulp suspension as a paper raw material and drying the obtained wet paper. Patent Document 1 below describes an outer peripheral surface of a drying cylinder. A technique relating to a belt material drying apparatus is disclosed in which an arc-shaped heat insulating lid is disposed in a state of covering an outer peripheral surface exposed portion at a position facing the outer peripheral surface exposed portion where the belt-shaped wet paper is not wound.

特許第２５１０１１９号公報Japanese Patent No. 2510119

しかしながら、上記特許文献１に記載の帯材乾燥装置は、円弧状断熱蓋が、乾燥用のシリンダーの帯状の湿紙が巻回されていない外周面露出部分にのみ配設したので、シリンダーの帯状の湿紙が巻回されている部分から、外方への放熱により、シリンダーの加熱に多大な熱量が必要となる。 However, in the belt material drying apparatus described in Patent Document 1, the arc-shaped heat insulating lid is disposed only on the exposed portion of the outer peripheral surface where the belt-shaped wet paper of the cylinder for drying is not wound. A large amount of heat is required for heating the cylinder due to heat radiation outward from the portion where the wet paper web is wound.

本発明は上記した課題を解決するものであり、加熱手段の加熱に要する熱量を抑えることができ、湿紙を効率よく乾燥することの可能な湿紙の乾燥装置及び該湿紙の乾燥装置を備えた古紙再生処理装置の提供を目的とする。 The present invention solves the above-described problems, and provides a wet paper web drying apparatus and a wet paper web drying apparatus capable of suppressing the amount of heat required for heating by the heating means and efficiently drying the wet paper web. An object of the present invention is to provide a used paper recycling apparatus.

上記目的を達成するために、第１の発明は、湿潤状態にある湿紙を搬送する搬送ベルトと、前記搬送ベルトが外周面に巻回されるとともに、前記湿紙を加熱する加熱手段を内部に設けた乾燥ローラとを備え、前記搬送ベルトにより搬送される湿紙を加熱手段により加熱し、乾燥させる湿紙の乾燥装置において、前記乾燥ローラの外周面であって、前記搬送ベルトが巻回された部分の近傍位置に、前記乾燥ローラの外周面を覆う覆い部材が配設されてなる湿紙の乾燥装置である。   In order to achieve the above object, a first invention includes a conveying belt that conveys a wet paper in a wet state, and a heating means that heats the wet paper while the conveying belt is wound around an outer peripheral surface. A wet paper web drying apparatus that heats the wet paper web transported by the transport belt by a heating means and dries the wet paper web, wherein the transport belt is wound around the outer peripheral surface of the drying roller. In the wet paper drying apparatus, a covering member that covers the outer peripheral surface of the drying roller is disposed in the vicinity of the formed portion.

また、第２の発明は、前記第１の発明において、覆い部材と乾燥ローラとの間に形成された空間に向けて空気を送る送風手段を設けてなるものである。 Moreover, 2nd invention provides the ventilation means which sends air toward the space formed between the covering member and the drying roller in said 1st invention.

そして、第３の発明は、前記第２の発明において、覆い部材は、乾燥ローラの外周面に沿って延在する円弧状曲面部を有し、前記円弧状曲面部と乾燥ローラの外周面との距離が、送風手段による空気の流れの上流側が広く、下流側が狭く形成されているものである。 In a third aspect based on the second aspect, the covering member has an arcuate curved surface portion extending along the outer circumferential surface of the drying roller, and the arcuate curved surface portion and the outer circumferential surface of the drying roller Is formed such that the upstream side of the air flow by the blowing means is wide and the downstream side is narrow.

更に、第４の発明は、前記第２又は第３の発明において、覆い部材と乾燥ローラとの間に形成された空間内の空気を、外部へ排出する排気手段を設けたものである。   Furthermore, a fourth invention is the above-mentioned second or third invention, wherein an exhaust means for discharging the air in the space formed between the covering member and the drying roller to the outside is provided.

更に、第５の発明は、古紙を離解してパルプ懸濁液を製造する再生パルプ製造部と、再生パルプ製造部で製造されたパルプ懸濁液を抄紙し湿紙を形成する湿紙形成部と、湿紙形成部で形成された湿紙を脱水する脱水部と、脱水部で脱水された湿紙を乾燥する前記第１乃至第５のうちいずれか一つの湿紙の乾燥装置とを備えた古紙再生処理装置である。 Further, the fifth invention includes a recycled pulp manufacturing section that disaggregates waste paper to produce a pulp suspension, and a wet paper forming section that forms wet paper by making the pulp suspension manufactured by the recycled pulp manufacturing section. A dehydrating unit that dehydrates the wet paper formed in the wet paper forming unit, and a wet paper drying device of any one of the first to fifth that dries the wet paper dehydrated in the dehydrating unit. Used paper recycling processing equipment.

第１の発明によれば、乾燥ローラの外周面であって、前記搬送ベルトが巻回された部分の近傍位置に、乾燥ローラの外周面を覆う覆い部材が配設されてなるので、乾燥ローラの外周面から外方へ熱が放出され、乾燥ローラの表面温度が低下するのを抑制することができる。よって、加熱手段の加熱に要する熱量を抑えることができ、湿紙を効率よく乾燥させることができる。 According to the first aspect of the present invention, since the covering member that covers the outer peripheral surface of the drying roller is disposed in the vicinity of the outer peripheral surface of the drying roller and in the vicinity of the portion around which the conveyor belt is wound, It is possible to suppress the heat from being released outward from the outer peripheral surface of the toner and the surface temperature of the drying roller from being lowered. Therefore, the amount of heat required for heating by the heating means can be suppressed, and the wet paper can be efficiently dried.

また、第２の発明によれば、覆い部材と乾燥ローラとの間に形成された空間に向けて空気を送る送風手段を設けてなるので、送風手段によって覆い部材と乾燥ローラとの間の空間に、空気の流通路を形成し、加熱により高湿度となり、覆い部材により加熱ローラの近傍に閉じ込められた空気を乾燥ローラの近傍から移動させることができ、効率よく湿紙の乾燥を行える。 According to the second aspect of the invention, the air blowing means for sending air toward the space formed between the covering member and the drying roller is provided, so the space between the covering member and the drying roller by the air blowing means. In addition, air flow passages are formed, and the humidity is increased by heating, and the air trapped in the vicinity of the heating roller by the covering member can be moved from the vicinity of the drying roller, so that the wet paper can be efficiently dried.

そして、第３の発明によれば、覆い部材は、乾燥ローラの外周面に沿って延在する円弧状曲面部を有し、前記円弧状曲面部と乾燥ローラの外周面との距離が、送風手段による空気の流れの上流側が広く、下流側が狭く形成されているので、覆い部材と乾燥ローラとの間の空間を流れる空気の流速が段々と速くなり、加速される。よって、湿紙を加熱することで湿紙から蒸発した水分を、乾燥ローラの近傍から素早く移動させることができ、乾燥効率をより向上させることができる。   According to the third aspect of the invention, the covering member has an arcuate curved surface portion extending along the outer peripheral surface of the drying roller, and the distance between the arcuate curved surface portion and the outer peripheral surface of the drying roller is an air blower. Since the upstream side of the air flow by the means is wide and the downstream side is narrow, the flow velocity of the air flowing through the space between the covering member and the drying roller is gradually increased and accelerated. Therefore, the moisture evaporated from the wet paper by heating the wet paper can be quickly moved from the vicinity of the drying roller, and the drying efficiency can be further improved.

更に、第４の発明によれば、覆い部材と乾燥ローラとの間に形成された空間内の空気を、外部へ排出する排気手段を設けたので、乾燥ローラの周囲の空気の湿度を低下させることができ、一旦蒸発した水分が結露し、乾燥後の湿紙に再付着したために再生紙の品質を低下させるといった不具合の発生を防止できる。 Furthermore, according to the fourth aspect of the invention, the exhaust means for discharging the air in the space formed between the covering member and the drying roller to the outside is provided, so that the humidity of the air around the drying roller is reduced. It is possible to prevent the occurrence of problems such as deteriorating the quality of recycled paper due to condensation of moisture once evaporated and reattaching to the wet paper after drying.

更に、第５の発明によれば、請求項１または請求項２に記載の張力調整装置と、請求項３または請求項４に記載の蛇行補正装置とを備えたので、張力調整装置により吸水ベルトの張力を調整しつつ、蛇行補正装置により吸水ベルトの蛇行を補正することができ、吸水ベルトに過大な力をかけることなく適正に走行させ、湿紙を脱水することができる。   Furthermore, according to the fifth invention, the tension adjusting device according to claim 1 or 2 and the meandering correcting device according to claim 3 or 4 are provided, so that the water absorbing belt is used by the tension adjusting device. The meandering correction device can correct the meandering of the water-absorbing belt while adjusting the tension of the water-absorbing belt, so that the water-absorbing belt can be properly run without applying excessive force, and the wet paper web can be dehydrated.

更に、第６の発明によれば、古紙を離解してパルプ懸濁液を製造する再生パルプ製造部と、再生パルプ製造部で製造されたパルプ懸濁液を抄紙し湿紙を形成する湿紙形成部と、湿紙形成部で形成された湿紙を脱水する脱水部と、脱水部で脱水された湿紙を乾燥する前記第１乃至５のいずれかの湿紙の乾燥装置とを備えた古紙再生処理装置であるので、古紙から得られた湿紙を、効率よく乾燥し、再生紙を製造することが可能である。 Furthermore, according to the sixth invention, a recycled pulp manufacturing section that disintegrates waste paper to produce a pulp suspension, and a wet paper that forms a wet paper by making a pulp suspension manufactured by the recycled pulp manufacturing section. A forming unit; a dehydrating unit that dehydrates the wet paper formed in the wet paper forming unit; and the wet paper drying apparatus according to any one of the first to fifth aspects that dries the wet paper dehydrated in the dehydrating unit. Since it is a used paper recycling apparatus, wet paper obtained from used paper can be efficiently dried to produce recycled paper.

本発明の一実施形態に係る古紙再生処理装置の構成概略図である。1 is a schematic configuration diagram of a used paper recycling processing apparatus according to an embodiment of the present invention. 前記古紙再生処理装置の抄紙部の概略構成を示す縦断面図である。It is a longitudinal cross-sectional view which shows schematic structure of the paper making part of the said used paper reproduction | regeneration processing apparatus. 前記抄紙部の乾燥部の構成を示す拡大図である。It is an enlarged view which shows the structure of the drying part of the said papermaking part. 前記乾燥部の拡大斜視図である。It is an expansion perspective view of the said drying part. 本発明の他の実施形態に係る古紙再生処理装置の乾燥部の構成を示す拡大図である。It is an enlarged view which shows the structure of the drying part of the used paper reproduction | regeneration processing apparatus which concerns on other embodiment of this invention.

以下、本発明の実施の形態を図面に基づいて説明する。図１は、本発明にかかる湿紙の乾燥装置を備えた古紙再生処理装置の概略構成図である。図１において、古紙再生処理装置１００は、再生パルプ製造部１、脱墨部２、抄紙部３、仕上部４及び各部を制御する制御部８を備えてなる。 Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a schematic configuration diagram of a used paper recycling apparatus provided with a wet paper drying apparatus according to the present invention. In FIG. 1, a used paper recycling apparatus 100 includes a recycled pulp manufacturing unit 1, a deinking unit 2, a paper making unit 3, a finishing unit 4, and a control unit 8 that controls each unit.

尚、以下では、本発明の湿紙の乾燥装置Ｖを、古紙６を原料として再生紙７を製造する古紙再生処理装置１００の抄紙部３に用いた場合について記載するが、必ずしもこれに限定されず、木材等の他のパルプ原料を用いた製紙装置の抄紙部に用いても構わない。 In the following description, the wet paper drying apparatus V according to the present invention is used for the paper making unit 3 of the used paper recycling apparatus 100 for producing the recycled paper 7 using the used paper 6 as a raw material. However, the present invention is not necessarily limited thereto. Alternatively, it may be used for a paper making section of a paper making apparatus using other pulp raw materials such as wood.

再生パルプ製造部１は、古紙１０を離解してパルプ懸濁液を製造するものであり、脱墨部２は、再生パルプ製造部１において製造されたパルプ懸濁液を脱墨するものであり、抄紙部３は、脱墨部２において得られた脱墨後のパルプ懸濁液を抄紙して湿紙を形成し、得られた湿紙を脱水し、乾燥するものであり、仕上部４は、抄紙部３において得られた仕上げ前の再生紙７を裁断等することにより仕上げを行って定型サイズの再生紙７を得るものである。制御部８は古紙再生処理装置１００全体の動作を制御する。再生パルプ製造部１及び脱墨部２は、それぞれ公知の再生パルプ製造装置及び脱墨装置を利用可能である。 The regenerated pulp manufacturing unit 1 disintegrates the waste paper 10 to manufacture a pulp suspension, and the deinking unit 2 deinks the pulp suspension manufactured in the regenerated pulp manufacturing unit 1. The paper making section 3 is for making a wet paper by making a paper suspension of the deinked pulp obtained in the deinking section 2, dehydrating the dried wet paper, and drying it. Is to finish the recycled paper 7 before finishing obtained in the paper making section 3 to obtain a standard size recycled paper 7 by cutting or the like. The control unit 8 controls the operation of the used paper recycling processing apparatus 100 as a whole. The regenerated pulp manufacturing unit 1 and the deinking unit 2 can use known regenerated pulp manufacturing devices and deinking devices, respectively.

図２は、抄紙部３を構成する抄紙装置Ｓの縦断面図である。尚、以下では、図２に示す抄紙装置Ｓの右側を「前側」、左側を「後側」、図２の紙面の手前を「右側」、紙面の奥側を「左側」として説明することとする。抄紙部３は、湿紙形成部１１、脱水部１４及び乾燥部１５がケーシング４１内に収容されてなる。湿紙形成部１１は、ヘッドボックス１２とワイヤー部１３とを有する。ケーシング４１内には、左右一対の側板３７，３８が配設されており、この側板３７，３８が各部を構成するほとんどのローラを、回動自在に軸支している。 FIG. 2 is a longitudinal sectional view of the paper making apparatus S constituting the paper making unit 3. In the following, the right side of the paper making apparatus S shown in FIG. 2 will be described as “front side”, the left side as “rear side”, the front side of the paper surface of FIG. 2 as “right side”, and the back side of the paper surface as “left side”. To do. The paper making unit 3 includes a wet paper web forming unit 11, a dehydrating unit 14, and a drying unit 15 housed in a casing 41. The wet paper web forming unit 11 includes a head box 12 and a wire unit 13. In the casing 41, a pair of left and right side plates 37, 38 are disposed, and these side plates 37, 38 pivotally support most of the rollers constituting each part.

ヘッドボックス１２は、脱墨後のパルプ懸濁液を抄紙ワイヤー２３上に均一に供給するためのものであり、パルプ懸濁液を貯留する貯留部１８と、貯留部１８に貯留するパルプ懸濁液を抄紙ワイヤー２３上に流出させる流出部１９と、貯留部１８の底部に形成されたパルプ懸濁液の流入部２０とを有する。 The head box 12 is for uniformly supplying the pulp suspension after deinking onto the papermaking wire 23. The head suspension 12 stores the pulp suspension and the pulp suspension stored in the storage unit 18. It has the outflow part 19 which makes a liquid flow out on the papermaking wire 23, and the inflow part 20 of the pulp suspension formed in the bottom part of the storage part 18. As shown in FIG.

ワイヤー部１３は、複数のローラ２４に掛け渡され、展張された無端状の抄紙ワイヤー２３を備えている。抄紙ワイヤー２３の上側の往路軌道の下方には、パルプ懸濁液を水切りする複数の縦板２６が、抄紙ワイヤー２３の走行方向に所定間隔で配置されており、各縦板２６は抄紙ワイヤー２３の走行方向と交差する方向に向けて、且つ、抄紙ワイヤー２３の下面に摺動接触させて配置されている。これにより、縦板２６が抄紙ワイヤー２３の網目から流下する白水を下方へと導くようになっている。 The wire unit 13 includes an endless paper-making wire 23 that is stretched over a plurality of rollers 24. Below the forward path of the papermaking wire 23, a plurality of vertical plates 26 for draining the pulp suspension are arranged at predetermined intervals in the traveling direction of the papermaking wire 23. Are arranged so as to be in sliding contact with the lower surface of the papermaking wire 23 in a direction crossing the traveling direction. Thereby, the vertical plate 26 guides the white water flowing down from the mesh of the papermaking wire 23 downward.

また、縦板２６の下方には、該縦板２６より、または抄紙ワイヤー２３の網目から直接流下する白水を受ける受水部２７を設けている。受水部２７は、下方に設置された白水タンク２９に接続されている。白水タンク２９は、内部に収容する白水を再生パルプ製造部１及び脱墨部２に送るための図示しない配管及びポンプを備え、受水部２７において回収した白水を再利用可能に構成している。 A water receiving portion 27 is provided below the vertical plate 26 for receiving white water flowing directly from the vertical plate 26 or from the mesh of the papermaking wire 23. The water receiving unit 27 is connected to a white water tank 29 installed below. The white water tank 29 includes a pipe and a pump (not shown) for sending white water stored therein to the regenerated pulp manufacturing unit 1 and the deinking unit 2, and is configured so that the white water collected in the water receiving unit 27 can be reused. .

脱水部１４は、湿紙の脱水装置Ｄにより構成され、該湿紙の脱水装置Ｄは、吸水ベルト３１と、複数のローラ３２と、脱水ローラ対４３とを備えている。吸水ベルト３１は、湿潤状態にある湿紙を搬送するものであり、フェルト、毛布等の吸水性の素材により無端状に形成され、複数のローラ３２の間に掛け渡されてなる。吸水ベルト３１は下方に配設された抄紙ワイヤー２３及び上方に配設された乾燥部１５の搬送ベルト１６に所定箇所でそれぞれ当接しており、この当接部分において、順次湿紙を転移するようになっている。 The dewatering unit 14 includes a wet paper web dewatering device D. The wet paper web dewatering device D includes a water absorbing belt 31, a plurality of rollers 32, and a dewatering roller pair 43. The water-absorbing belt 31 conveys wet paper in a wet state, is formed endlessly with a water-absorbing material such as felt or a blanket, and is stretched between a plurality of rollers 32. The water absorbing belt 31 is in contact with the paper making wire 23 disposed below and the conveying belt 16 of the drying unit 15 disposed above at predetermined positions, respectively, and the wet paper webs are sequentially transferred at the contact portion. It has become.

脱水ローラ対４３は、吸水ベルト３１と搬送ベルト１６との当接箇所に設置されている。脱水ローラ対４３は吸水ベルト３１と搬送ベルト１６を表裏方向に挟持し、両ベルト間の湿紙を押圧して脱水しつつ、湿紙を吸水ベルト３１から搬送ベルト１６に転移させるものである。脱水ローラ対４３は吸水ベルト３１の内方に設置された第１脱水ローラ４５と、搬送ベルト１６の内方であって、第１脱水ローラ４５の対向位置に設置された第２脱水ローラ４６とからなる。 The dewatering roller pair 43 is installed at a contact point between the water absorption belt 31 and the conveyance belt 16. The dewatering roller pair 43 holds the water absorption belt 31 and the conveyance belt 16 in the front and back directions, and transfers the wet paper from the water absorption belt 31 to the conveyance belt 16 while pressing and dehydrating the wet paper between both belts. The dewatering roller pair 43 includes a first dewatering roller 45 installed on the inner side of the water absorbing belt 31, and a second dewatering roller 46 installed on the inner side of the transport belt 16 and facing the first dewatering roller 45. Consists of.

第２脱水ローラ４６は図示しない駆動部に連結され、駆動部の駆動により、第２脱水ローラ４６が回転駆動される。第２脱水ローラ４６の回転によって、吸水ベルト３１及び搬送ベルト１６を走行させるとともに、吸水ベルト３１及び搬送ベルト１６を介して、第２脱水ローラ４６に所定圧力で転接する第１脱水ローラ４５を従動回転させる。 The second dehydrating roller 46 is connected to a driving unit (not shown), and the second dehydrating roller 46 is rotationally driven by driving of the driving unit. As the second dewatering roller 46 rotates, the water absorbing belt 31 and the conveying belt 16 are caused to travel, and the first dehydrating roller 45 that is in rolling contact with the second dewatering roller 46 at a predetermined pressure is driven via the water absorbing belt 31 and the conveying belt 16. Rotate.

乾燥部１５は、湿紙の乾燥装置Ｖにより構成され、該湿紙の乾燥装置Ｖは、搬送ベルト１６と、挟持用ベルト４８と、乾燥ローラ５０と、複数のローラ５１と、覆い部材５３と、カレンダー部５４と、送風手段５６と、排気手段５５とを備えている。搬送ベルト１６は、乾燥ローラ５０及び複数のローラ５１の間に掛け渡されている。挟持用ベルト４８は、乾燥ローラ５０及び複数のローラ５７に掛け渡されている。搬送ベルト１６と挟持用ベルト４８とは、乾燥ローラ５０に巻回された範囲を含む所定箇所で重ね合わされて走行し、この搬送ベルト１６と挟持用ベルト４８との間で、湿潤状態にある湿紙を挟持して搬送する。搬送ベルト１６及び挟持用ベルトの材質は特に限定されず、例えば、布、耐熱樹脂または金属等とする。 The drying unit 15 includes a wet paper drying device V. The wet paper drying device V includes a transport belt 16, a sandwiching belt 48, a drying roller 50, a plurality of rollers 51, and a covering member 53. , A calendar section 54, an air blowing means 56, and an exhaust means 55. The conveyor belt 16 is stretched between the drying roller 50 and the plurality of rollers 51. The clamping belt 48 is stretched around the drying roller 50 and the plurality of rollers 57. The conveyor belt 16 and the sandwiching belt 48 are overlapped at a predetermined location including a range wound around the drying roller 50 and travel between the conveyor belt 16 and the sandwiching belt 48 in a wet state. The paper is nipped and conveyed. The material of the conveyance belt 16 and the sandwiching belt is not particularly limited, and is, for example, cloth, heat resistant resin, metal, or the like.

図３は、乾燥ローラ５０及びその周辺の構成を示す拡大図、図４は搬送ベルト１６、乾燥ローラ５０、支持ローラ６１、覆い部材５３、送風手段５６、排気手段５５の拡大斜視図である。図３，４に示すように、乾燥ローラ５０は、中空円筒状に形成された筒体５８を備え、該筒体５８の筒心Ｃに直交する左右の側面は、円盤形状の蓋体５９により閉塞されている。また、筒体５９は、３個の支持ローラ６１により回転自在に支持されている。筒体５８の内周面には、加熱手段６２を備えており、該加熱手段６２は、柔軟で可撓性を有し、シート状に形成されたシリコンラバーヒータ等の加熱体により構成され、該加熱体が、乾燥ローラの内周面に全周に亘って貼着されている。 FIG. 3 is an enlarged view showing the configuration of the drying roller 50 and its surroundings, and FIG. 4 is an enlarged perspective view of the conveying belt 16, the drying roller 50, the support roller 61, the covering member 53, the blowing unit 56, and the exhausting unit 55. As shown in FIGS. 3 and 4, the drying roller 50 includes a cylindrical body 58 formed in a hollow cylindrical shape, and left and right side surfaces perpendicular to the cylindrical center C of the cylindrical body 58 are formed by a disc-shaped lid body 59. It is blocked. The cylindrical body 59 is rotatably supported by the three support rollers 61. A heating means 62 is provided on the inner peripheral surface of the cylindrical body 58. The heating means 62 is made of a heating body such as a silicon rubber heater that is soft and flexible and formed into a sheet shape. The heating body is adhered to the inner peripheral surface of the drying roller over the entire circumference.

また、図３に示すように、乾燥ローラ５０の前側には、筒体５８の表面温度を検出する温度センサ６６を設けている。本実施形態では、温度センサ６６が、筒体５８の表面に摺接し、筒体５８の温度を検出する構成としたが、筒体５８に非接触のセンサを用いてもよい。 As shown in FIG. 3, a temperature sensor 66 that detects the surface temperature of the cylinder 58 is provided on the front side of the drying roller 50. In the present embodiment, the temperature sensor 66 is configured to slidably contact the surface of the cylinder 58 and detect the temperature of the cylinder 58, but a non-contact sensor may be used for the cylinder 58.

筒体５８は、後側の半円部分に、搬送ベルト１６及び挟持用ベルト４８が重ね合わされた状態で巻回されている。そして、筒体５８は、搬送ベルト１６及び挟持用ベルト４８が図示しない各々の駆動部によってそれぞれ走行駆動されることにより、従動して回転するようになっている。 The cylindrical body 58 is wound in a state where the conveyance belt 16 and the sandwiching belt 48 are overlapped with each other on the rear semicircle portion. The cylindrical body 58 is driven and rotated by the transport belt 16 and the clamping belt 48 being driven and driven by respective drive units (not shown).

覆い部材５３は、乾燥ローラ５０の筒体５８の外周面であって、搬送ベルト１６及び挟持用ベルト４８が巻回された部分の近傍位置に配設されている。より詳しくは、覆い部材５３は、搬送ベルト１６及び挟持用ベルト４８が巻回されている部分の筒体５８の上半分を覆うよう乾燥ローラ５０の外周面に近接して設置されている。 The covering member 53 is disposed on the outer peripheral surface of the cylinder 58 of the drying roller 50 and in the vicinity of the portion around which the conveyance belt 16 and the sandwiching belt 48 are wound. More specifically, the covering member 53 is disposed in the vicinity of the outer peripheral surface of the drying roller 50 so as to cover the upper half of the cylindrical body 58 where the conveyance belt 16 and the sandwiching belt 48 are wound.

覆い部材５３は、筒体５８の筒心Ｃ方向の長さより長く形成され、乾燥ローラ５０の外周面に沿って延設された円弧状曲面部６８を有する。ここで、乾燥ローラ５０は常に回転しているので、乾燥ローラ５０の外周面のうち、覆い部材５３により覆われる部位は、常に変化していることとなる。覆い部材５３は、左右の側壁３７，３８に螺子６９により固定されている。この覆い部材５３は、金属製薄板や耐熱性合成樹脂等を加工して形成される。 The covering member 53 has an arcuate curved surface 68 that is formed longer than the length of the cylindrical body 58 in the cylinder center C direction and that extends along the outer peripheral surface of the drying roller 50. Here, since the drying roller 50 is always rotating, the portion of the outer peripheral surface of the drying roller 50 that is covered by the covering member 53 is constantly changing. The covering member 53 is fixed to the left and right side walls 37 and 38 by screws 69. The covering member 53 is formed by processing a metal thin plate, a heat resistant synthetic resin, or the like.

カレンダー部５４は、覆い部材５３の設置位置の下方に設けられている。カレンダー部５４は、乾燥ローラ５０の外周面に対向して設置され、挟持用ベルト４８を挟持用ベルト退避機構７４により湿紙から離間させた状態で、搬送ベルト１６との間で湿紙を挟むプレスローラ７３を有する。プレスローラ７３は、湿紙に当接するプレス位置と、湿紙から離間する退避位置とに亘って変位可能に構成されている。 The calendar portion 54 is provided below the installation position of the covering member 53. The calendar unit 54 is installed to face the outer peripheral surface of the drying roller 50, and sandwiches the wet paper with the conveying belt 16 in a state where the holding belt 48 is separated from the wet paper by the holding belt retracting mechanism 74. A press roller 73 is provided. The press roller 73 is configured to be displaceable between a press position that contacts the wet paper and a retracted position that is separated from the wet paper.

送風手段５６は、乾燥ローラ５０の後方位置であって、覆い部材５３の下端縁より下方位置に配設されている。送風手段５６は、左右幅方向に並設された複数の軸流ファンにより構成される。送風手段５６は、覆い部材５３と乾燥ローラ５０との間の空間６３へ向けて下方から空気を送るようになっている。この結果、覆い部材５３と乾燥ローラ５０との間の空間６３は、送風手段５６からの空気の流通路となっている。 The blower 56 is disposed behind the drying roller 50 and below the lower edge of the cover member 53. The air blowing means 56 is composed of a plurality of axial fans arranged in parallel in the left-right width direction. The blower 56 sends air from below toward the space 63 between the covering member 53 and the drying roller 50. As a result, the space 63 between the covering member 53 and the drying roller 50 is an air flow path from the blower 56.

排気手段５５は、乾燥ローラ５０の真上となるケーシング４１の上面に設けられている。排気手段５５は、左右幅方向に並設された複数の軸流ファンにより構成される。排気手段５５は、乾燥ローラ５０の上方に滞留する湿度の高い空気をケーシング４１の上面より上方ヘと排出する。また、送風手段５６から覆い部材５３と乾燥ローラ５０との間の空間６３へ送られ、該空間６３内を上方へと円弧状に流れた結果、高湿度となった空気も、覆い部材５３の上端縁から流出した際に、排気手段５５により、ケーシング４１の上面より外部ヘ排出することができる。 The exhaust means 55 is provided on the upper surface of the casing 41 that is directly above the drying roller 50. The exhaust means 55 is composed of a plurality of axial fans arranged in parallel in the left-right width direction. The exhaust means 55 discharges the high-humidity air staying above the drying roller 50 upward from the upper surface of the casing 41. Further, air that has been sent to the space 63 between the covering member 53 and the drying roller 50 from the air blowing means 56 and flows upward in an arc shape in the space 63, resulting in high humidity is also present in the covering member 53. When it flows out from the upper edge, it can be discharged from the upper surface of the casing 41 to the outside by the exhaust means 55.

（仕上部）
図１に示す仕上部４は、帯状の紙を所定のシートサイズにカットする裁断刃（図示省略）を備えている。 (Finish)
The finishing section 4 shown in FIG. 1 includes a cutting blade (not shown) that cuts strip-shaped paper into a predetermined sheet size.

（作用）
本実施形態にかかる製紙装置１００の作用につき以下に説明する。まず、再生パルプ製造部１において所定量の古紙１０を所定量の水とともに所定時間攪拌することで、パルプ懸濁液を製造する。次に、得られたパルプ懸濁液を脱墨部２へ送り、脱墨処理を行って、脱墨後のパルプ懸濁液を得る。脱墨後のパルプ懸濁液に対し、脱墨部２においてまたは脱墨部２から抄紙部３への流通経路の途中位置で加水し、抄紙に適する所定のパルプ濃度に調製し、抄紙部３のヘッドボックス１２へ送る。 (Function)
The operation of the paper making apparatus 100 according to the present embodiment will be described below. First, a pulp suspension is manufactured by stirring a predetermined amount of used paper 10 together with a predetermined amount of water in the recycled pulp manufacturing unit 1 for a predetermined time. Next, the obtained pulp suspension is sent to the deinking section 2, and deinking processing is performed to obtain a pulp suspension after deinking. The pulp suspension after deinking is hydrated in the deinking section 2 or in the middle of the distribution path from the deinking section 2 to the papermaking section 3 to prepare a predetermined pulp concentration suitable for papermaking, and the papermaking section 3 To the head box 12.

ヘッドボックス１２では、パルプ懸濁液が流入部２０から貯留部１８に流入され、流出部１９から抄紙ワイヤー２３上に流出される。抄紙ワイヤー２３上に供給されたパルプ懸濁液のうち液体分が抄紙ワイヤー２３の網目を通り抜け、縦板２６により下方の受水部２７へと導かれ、受水部２７で受水された後、白水タンク２９内に収容される。白水タンク２９内の白水は、再生パルプ製造部１や脱墨部２等へ送られ、再利用される。抄紙ワイヤー２３上に残存した再生パルプにより、水分を比較的多く含んだ繊維の層である湿紙が形成される。 In the head box 12, the pulp suspension flows from the inflow portion 20 into the storage portion 18, and flows out from the outflow portion 19 onto the papermaking wire 23. After the liquid suspension in the pulp suspension supplied onto the papermaking wire 23 passes through the mesh of the papermaking wire 23 and is guided to the lower water receiving portion 27 by the vertical plate 26 and received by the water receiving portion 27. The white water tank 29 is accommodated. The white water in the white water tank 29 is sent to the recycled pulp manufacturing unit 1, the deinking unit 2, etc. and reused. The recycled pulp remaining on the papermaking wire 23 forms a wet paper which is a fiber layer containing a relatively large amount of moisture.

抄紙ワイヤー２３上の湿紙が吸水ベルト３１との当接部３０に至ると、抄紙ワイヤー２３から吸水ベルト３１へと転移される。吸水ベルト３１は、湿潤状態にある湿紙を担持しつつ走行することで、湿紙に含まれる水分を吸水ベルト３１側に吸収させ、脱水する。更に、脱水ローラ対４３の設置位置で、脱水ローラ対４３により湿紙を挟持押圧し、脱水するとともに、搬送ベルト１６に転移する。 When the wet paper on the paper making wire 23 reaches the contact portion 30 with the water absorbing belt 31, it is transferred from the paper making wire 23 to the water absorbing belt 31. The water absorption belt 31 travels while carrying wet paper in a wet state, thereby absorbing water contained in the wet paper to the water absorption belt 31 side and dehydrating. Further, the wet paper web is sandwiched and pressed by the dewatering roller pair 43 at the installation position of the dewatering roller pair 43, dehydrated, and transferred to the conveying belt 16.

吸水ベルト３１から搬送ベルト１６に転移した湿紙は、挟持用ベルト４８との間に挟持され、加熱手段６２によって加熱された乾燥ローラ５０に、搬送ベルト１６を介して当接されることで乾燥が行われ、仕上げ前の帯状の再生紙７が得られる。尚、乾燥ローラ５０は、温度センサ６６によって温度が検出され、所定温度に維持されている。 The wet paper transferred from the water absorption belt 31 to the transport belt 16 is sandwiched between the sandwich belt 48 and dried by being brought into contact with the drying roller 50 heated by the heating means 62 via the transport belt 16. Is performed, and a belt-shaped recycled paper 7 before finishing is obtained. The temperature of the drying roller 50 is detected by a temperature sensor 66 and is maintained at a predetermined temperature.

この湿紙の乾燥の際、カレンダー部５４では、プレスローラ７３を退避位置からプレス位置へ移動し、プレスローラ７３により湿紙を搬送ベルト１６及び乾燥ローラ５０に押し当ててプレスすることで、得られる再生紙７の平坦度を高める。 When drying the wet paper, the calendar unit 54 moves the press roller 73 from the retracted position to the press position, and presses the wet paper against the transport belt 16 and the drying roller 50 by the press roller 73 to obtain the wet paper. The flatness of the recycled paper 7 is increased.

乾燥ローラ５０の近傍位置には、覆い部材５３が配設されているので、乾燥ローラ５０の外周面から外方へ熱が放出され、乾燥ローラ５０の表面温度が低下するのを抑制することができる。よって、加熱手段６２の加熱に要する熱量を抑えることができ、湿紙を効率よく乾燥させることができる。 Since the covering member 53 is disposed in the vicinity of the drying roller 50, it is possible to prevent heat from being released outwardly from the outer peripheral surface of the drying roller 50, thereby reducing the surface temperature of the drying roller 50. it can. Therefore, the amount of heat required for heating by the heating means 62 can be suppressed, and the wet paper can be efficiently dried.

また、湿紙の乾燥の際、制御部８が、送風手段５６を駆動した場合には、覆い部材５３と乾燥ローラ５０との間の空間６３に、空気を送り、乾燥ローラ５０の外周面に沿って空気の流れを生じさせることができる。これにより、乾燥ローラ５０からの放熱で温められ、また湿紙から水分が蒸発することで湿度が高くなった空気が、覆い部材５３と乾燥ローラ５０との間の空間６３を上方へ流通する。これにより、覆い部材５３を設けることで湿度が高くなった乾燥ローラ５０の周囲の空気を流通させ、湿度を低下させることができ、湿紙をより効率よく乾燥することができる。 Further, when the control unit 8 drives the blower 56 when drying the wet paper, air is sent to the space 63 between the covering member 53 and the drying roller 50, and the air is fed to the outer peripheral surface of the drying roller 50. Along the air flow can be generated. As a result, the air heated by the heat radiation from the drying roller 50 and having increased humidity due to the evaporation of moisture from the wet paper flows upward in the space 63 between the covering member 53 and the drying roller 50. Thereby, by providing the covering member 53, the air around the drying roller 50 whose humidity has been increased can be circulated, the humidity can be lowered, and the wet paper can be dried more efficiently.

更に、制御部８が、排気手段５５を駆動した場合には、乾燥ローラ５０の上方の空間に滞留する空気を、ケーシング４１の外部へ排出することができる。また、制御部８が、送風手段５６と排気手段５５の両者とも同時に駆動した場合、送風手段５６より覆い部材５３と乾燥ローラ５０との間の空間６３へ送られ、該空間６３を円弧を描いて上方へ流通した空気を、排気手段５５によりケーシング４１の外方ヘ排出することができる。これにより、加熱により高湿度となった乾燥ローラ５０の周囲の空気を、乾燥ローラ５０の近傍から移動させ、外部に排出することができる。 Further, when the controller 8 drives the exhaust means 55, the air staying in the space above the drying roller 50 can be discharged to the outside of the casing 41. When the control unit 8 drives both the blowing unit 56 and the exhausting unit 55 at the same time, the control unit 8 sends the air to the space 63 between the covering member 53 and the drying roller 50 from the blowing unit 56, and draws an arc in the space 63. Then, the air circulated upward can be discharged to the outside of the casing 41 by the exhaust means 55. Thereby, the air around the drying roller 50 that has become highly humid due to heating can be moved from the vicinity of the drying roller 50 and discharged to the outside.

これにより、ケーシング４１内の湿度を低下させることができ、ケーシング４１内で一旦水蒸気となった水分が、ローラ５１、５７等に付着し、結露するのを防止することができる。通常、ケーシング４１内が高湿度となった場合には、ローラ５１，５７等に水蒸気が付着し結露してしまうことがある。この場合には、ローラ５１，５７から搬送ベルト１６や挟持用ベルト４８に、結露した水分が転移し、更には、乾燥途中の湿紙に付着することがあり、得られる再生紙７の品質を低下させる不具合が生じることがある。しかし、排気手段５５を駆動することで、ケーシング４１内の湿度を低く抑えることができるので、かかる不具合を防止できる。 Thereby, the humidity in the casing 41 can be reduced, and moisture once converted into water vapor in the casing 41 can be prevented from adhering to the rollers 51, 57 and the like and dew condensation. Normally, when the inside of the casing 41 becomes high humidity, water vapor may adhere to the rollers 51, 57 and the like, resulting in condensation. In this case, the condensed moisture may be transferred from the rollers 51 and 57 to the conveying belt 16 or the clamping belt 48, and may further adhere to the wet paper during drying. Deterioration may occur. However, since the humidity in the casing 41 can be kept low by driving the exhaust means 55, such a problem can be prevented.

乾燥部１５で得られた仕上げ前の帯状の再生紙７を、仕上部４に送り、裁断刃で所定のシートサイズに裁断して再生紙７が完成する。裁断刃により裁断された再生紙７の端材は、図１に示すように再生パルプ製造部１に戻され、再度再生紙７の製造に利用される。 The unfinished belt-shaped recycled paper 7 obtained in the drying unit 15 is sent to the finishing section 4 and cut into a predetermined sheet size with a cutting blade, whereby the recycled paper 7 is completed. The end material of the recycled paper 7 cut by the cutting blade is returned to the recycled pulp manufacturing unit 1 as shown in FIG. 1 and used again for manufacturing the recycled paper 7.

（第２の実施形態）
図５は、第２の実施形態にかかる湿紙の乾燥装置Ｖａの乾燥ローラ５０及びその周辺の構成を示す拡大図である。上記第１の実施形態では、覆い部材５３が乾燥ローラ５０の外周面に略平行に設置され、円弧状曲面部６８と乾燥ローラ５０の外周面との距離Ｓ（図３参照）が、いずれの箇所でも略同程度とされた。一方、本第２の実施形態では、円弧状曲面部６８ａと乾燥ローラ５０の外周面との間が、送風手段５６ａによる空気の流れの上流側の距離Ｌが長く、下流側の距離Ｍが短く形成されている。 (Second Embodiment)
FIG. 5 is an enlarged view showing the configuration of the drying roller 50 and its surroundings of the wet paper web drying device Va according to the second embodiment. In the first embodiment, the covering member 53 is installed substantially parallel to the outer peripheral surface of the drying roller 50, and the distance S (see FIG. 3) between the arcuate curved surface portion 68 and the outer peripheral surface of the drying roller 50 is any. The location was almost the same. On the other hand, in the second embodiment, the distance L on the upstream side of the air flow by the blower 56a is long and the distance M on the downstream side is short between the arcuate curved surface portion 68a and the outer peripheral surface of the drying roller 50. Is formed.

また、送風手段５６ａを第１の実施形態におけるプロペラファン等の軸流ファンに替えてシロッコファンやターボファン等の輻流ファンを用いている。 In addition, a radiant fan such as a sirocco fan or a turbo fan is used in place of the axial flow fan such as the propeller fan in the first embodiment as the blowing means 56a.

本第２の実施形態に係る湿紙の乾燥装置Ｖａによって湿紙を乾燥する際、制御部８が、送風手段５６ａを駆動し、覆い部材５３ａと乾燥ローラ５０との間の空間６３ａに空気を送る。覆い部材５３ａは、円弧状曲面部６８ａと乾燥ローラ５０の外周面との間が、送風手段５６ａによる空気の流れの上流側の距離Ｌが広く、下流側の距離Ｍが狭くなるよう設置されているので、この空間６３ａを流れる空気の流速が段々と速くなり、加速される。特に、送風手段５６ａに輻流ファンを用いているので、軸流ファンを用いる場合より風圧を高く維持することができ、空間６３ａを流れる空気の流速を十分に加速させることができる。これにより、湿紙を加熱することで湿紙から蒸発した水分を、覆い部材５３ａと乾燥ローラ５０との間の空間６３ａから素早く移動させることができ、乾燥効率をより向上させることができる。 When the wet paper web is dried by the wet paper web drying device Va according to the second embodiment, the control unit 8 drives the blower 56a to supply air to the space 63a between the covering member 53a and the drying roller 50. send. The covering member 53a is installed between the arcuate curved surface portion 68a and the outer peripheral surface of the drying roller 50 so that the upstream distance L of the air flow by the blower 56a is wide and the downstream distance M is narrow. Therefore, the flow velocity of the air flowing through the space 63a is gradually increased and accelerated. In particular, since the radiant fan is used for the blower 56a, the wind pressure can be maintained higher than when an axial fan is used, and the flow velocity of the air flowing through the space 63a can be sufficiently accelerated. Thereby, the moisture evaporated from the wet paper by heating the wet paper can be quickly moved from the space 63a between the covering member 53a and the drying roller 50, and the drying efficiency can be further improved.

そして、制御部８が排気手段５５を駆動することで、覆い部材５３の上端縁より前方へ流れ出た空気は、排気手段５５に吸引され、ケーシング４１の外方へ排出される。 Then, when the control unit 8 drives the exhaust unit 55, the air flowing forward from the upper end edge of the cover member 53 is sucked into the exhaust unit 55 and discharged to the outside of the casing 41.

尚、上記実施形態では、古紙再生処理装置１００に脱墨部２を設けたが、脱墨部２を省略しても構わない。また、送風手段５６及び排気手段５５は、ともに左右幅方向に並設された複数の軸流ファンまたは輻流ファンにより構成したが、送風手段５６及び排気手段５５は、いずれも必ずしも設ける必要はない。また、軸流ファンとしたところをシロッコファンやターボファン等としてもよく、斜流ファン等他の送風機を用いても構わない。 In the above embodiment, the deinking unit 2 is provided in the used paper recycling processing apparatus 100, but the deinking unit 2 may be omitted. Moreover, although the air blower 56 and the exhaust means 55 are both configured by a plurality of axial fans or radial fans arranged in parallel in the left-right width direction, it is not always necessary to provide the air blower 56 and the exhaust means 55. . Further, the axial flow fan may be a sirocco fan, a turbo fan, or the like, or another blower such as a mixed flow fan may be used.

また、覆い部材５３は、金属製薄板や耐熱性合成樹脂等を加工して形成されたが、他の構成であってもよく、また必要により、金属製薄板や耐熱性合成樹脂等を加工して形成された覆い部材５３の表裏いずれか又は双方の面に、発泡スチロール等の多孔質材料等からなる断熱材層を設けても構わない（図示省略）。また、送風手段５６は、覆い部材５３，５３ａと乾燥ローラ５０との間に形成された空間６３，６３ａに向けて空気を送ることとしたが、これに限定されず、例えば、カレンダー部に向けて送風する等、湿紙の乾燥装置のケーシング内の空気を流通させるよう他の部分に向けて送風してもよい。 In addition, the covering member 53 is formed by processing a metal thin plate or a heat-resistant synthetic resin. However, the cover member 53 may have other configurations, and if necessary, the metal thin plate or the heat-resistant synthetic resin may be processed. A heat insulating material layer made of a porous material such as polystyrene foam or the like may be provided on either or both of the front and back surfaces of the covering member 53 (not shown). Moreover, although the air blowing means 56 decided to send air toward the space 63, 63a formed between the covering members 53, 53a and the drying roller 50, it is not limited to this. For example, the air in the casing of the wet paper web drying device may be blown toward another portion.

Ｖ，Ｖａ 湿紙の乾燥装置
１ 再生パルプ製造部
１１ 湿紙形成部
１４ 脱水部
１５ 乾燥部
１６ 搬送ベルト
５０ 乾燥ローラ
５３，５３ａ 覆い部材
５５ 排気手段
５６，５６ａ 送風手段
６２ 加熱手段
６８，６８ａ 円弧状曲面部 V, Va Wet paper drying device 1 Recycled pulp manufacturing section 11 Wet paper forming section 14 Dewatering section 15 Drying section 16 Conveying belt 50 Drying rollers 53, 53a Cover member 55 Exhaust means 56, 56a Blow means 62 Heating means 68, 68a Circles Arc surface

Claims (5)

湿潤状態にある湿紙を搬送する搬送ベルトと、
前記搬送ベルトが外周面に巻回されるとともに、前記湿紙を加熱する加熱手段を内部に設けた乾燥ローラとを備え、
前記搬送ベルトにより搬送される湿紙を加熱手段により加熱し、乾燥させる湿紙の乾燥装置において、
前記乾燥ローラの外周面であって、前記搬送ベルトが巻回された部分の近傍位置に、前記乾燥ローラの外周面を覆う覆い部材が配設されてなることを特徴とする湿紙の乾燥装置。 A transport belt for transporting wet paper in a wet state;
The conveyor belt is wound around an outer peripheral surface, and includes a drying roller provided with heating means for heating the wet paper,
In the wet paper drying apparatus that heats and dries the wet paper transported by the transport belt by a heating means,
A wet paper drying apparatus, wherein a covering member that covers the outer peripheral surface of the drying roller is disposed at a position on the outer peripheral surface of the drying roller, in the vicinity of a portion around which the conveyor belt is wound. . 覆い部材と乾燥ローラとの間に形成された空間に向けて空気を送る送風手段を設けてなる請求項１に記載の湿紙の乾燥装置。 2. The wet paper web drying apparatus according to claim 1, further comprising air blowing means for sending air toward a space formed between the covering member and the drying roller. 覆い部材は、乾燥ローラの外周面に沿って延在する円弧状曲面部を有し、
前記円弧状曲面部と乾燥ローラの外周面との距離が、送風手段による空気の流れの上流側が広く、下流側が狭く形成されている請求項２に記載の湿紙の乾燥装置。 The covering member has an arcuate curved surface portion extending along the outer peripheral surface of the drying roller,
3. The wet paper web drying apparatus according to claim 2, wherein a distance between the arcuate curved surface portion and the outer peripheral surface of the drying roller is formed so that the upstream side of the air flow by the blower is wide and the downstream side is narrow. 覆い部材と乾燥ローラとの間に形成された空間内の空気を、外部へ排出する排気手段を設けた請求項２または請求項３に記載の湿紙乾燥装置。 4. The wet paper web drying apparatus according to claim 2, further comprising exhaust means for exhausting air in a space formed between the cover member and the drying roller to the outside. 古紙を離解してパルプ懸濁液を製造する再生パルプ製造部と、
再生パルプ製造部で製造されたパルプ懸濁液を抄紙し湿紙を形成する湿紙形成部と、
湿紙形成部で形成された湿紙を脱水する脱水部と、
脱水部で脱水された湿紙を乾燥する請求項１乃至請求項５のいずれか一項に記載の湿紙の乾燥装置とを備えた古紙再生処理装置。 Regenerated pulp manufacturing department that disaggregates waste paper to produce pulp suspension;
A wet paper web forming section for paper making a pulp suspension produced in the recycled pulp production department to form a wet paper;
A dewatering unit for dewatering the wet paper formed in the wet paper forming unit;
A used paper recycling apparatus comprising the wet paper drying device according to any one of claims 1 to 5, wherein the wet paper dehydrated by the dewatering unit is dried.
JP2010280658A 2010-12-16 2010-12-16 Drying device for wet paper and used paper recycling apparatus Pending JP2012127030A (en)

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JPS6283899U (en) * 1985-11-12 1987-05-28
JPS62117896A (en) * 1985-11-12 1987-05-29 三菱重工業株式会社 Dryer
JPH03174084A (en) * 1989-12-01 1991-07-29 Valmet Paper Mach Inc Method and device in paper machine
JPH05156589A (en) * 1991-12-03 1993-06-22 Mitsubishi Heavy Ind Ltd Drier of paper machine
JP2010242263A (en) * 2009-04-07 2010-10-28 Duplo Seiko Corp Recycled pulp manufacturing device, waste paper processing device, and waste paper processing method

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Publication number Priority date Publication date Assignee Title
JPS6283899U (en) * 1985-11-12 1987-05-28
JPS62117896A (en) * 1985-11-12 1987-05-29 三菱重工業株式会社 Dryer
JPH03174084A (en) * 1989-12-01 1991-07-29 Valmet Paper Mach Inc Method and device in paper machine
JPH05156589A (en) * 1991-12-03 1993-06-22 Mitsubishi Heavy Ind Ltd Drier of paper machine
JP2010242263A (en) * 2009-04-07 2010-10-28 Duplo Seiko Corp Recycled pulp manufacturing device, waste paper processing device, and waste paper processing method

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