JP6117683B2 - Papermaking screen device - Google Patents

Papermaking screen device Download PDF

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Publication number
JP6117683B2
JP6117683B2 JP2013248797A JP2013248797A JP6117683B2 JP 6117683 B2 JP6117683 B2 JP 6117683B2 JP 2013248797 A JP2013248797 A JP 2013248797A JP 2013248797 A JP2013248797 A JP 2013248797A JP 6117683 B2 JP6117683 B2 JP 6117683B2
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Japan
Prior art keywords
stirring member
raw material
tank
papermaking raw
rotor body
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JP2013248797A
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JP2014148777A (en
Inventor
川 雅 紀 相
川 雅 紀 相
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Aikawa Iron Works Co Ltd
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Aikawa Iron Works Co Ltd
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Application filed by Aikawa Iron Works Co Ltd filed Critical Aikawa Iron Works Co Ltd
Priority to JP2013248797A priority Critical patent/JP6117683B2/en
Priority to US14/140,246 priority patent/US20140190646A1/en
Priority to TW102148415A priority patent/TW201433673A/en
Priority to KR1020140000035A priority patent/KR101924348B1/en
Priority to EP14150389.6A priority patent/EP2754749A1/en
Priority to CA2838518A priority patent/CA2838518C/en
Priority to CN201410007668.9A priority patent/CN103924473A/en
Publication of JP2014148777A publication Critical patent/JP2014148777A/en
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Publication of JP6117683B2 publication Critical patent/JP6117683B2/en
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    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
    • D21D5/00—Purification of the pulp suspension by mechanical means; Apparatus therefor
    • D21D5/02—Straining or screening the pulp
    • D21D5/16—Cylinders and plates for screens
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
    • D21D5/00—Purification of the pulp suspension by mechanical means; Apparatus therefor
    • D21D5/02—Straining or screening the pulp
    • D21D5/023—Stationary screen-drums
    • D21D5/026—Stationary screen-drums with rotating cleaning foils

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Paper (AREA)
  • Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)

Description

本発明は、製紙用スクリーン装置に係り、特に、省エネルギーと精選効果をバランス良く達成することができる製紙用スクリーン装置に関する。     The present invention relates to a papermaking screen device, and more particularly to a papermaking screen device that can achieve energy saving and a selective effect in a balanced manner.

従来、円筒形状の製紙用ローターの両端面を除く側面に平行に撹拌部材を設け、製紙
原料の流れに対し、該撹拌部材の前部で加圧を生じ、撹拌部材の後部で負圧を生じさせ、
バスケットの目洗い作用を起こして精選させる製紙用スクリーン装置がある（特許文献１
参照）。
この製紙用スクリーン装置にあっては、精選力は良好なものの、製紙原料が撹拌部材
に対し直角に、しかも、縦長に、製紙原料流れの抵抗を受けるため、動力を要するという
問題点があった。
この問題点を改善するものとして、円筒形状の製紙用ローターの両端面を除く側面に
、製紙原料流れに対して下がり勾配となる直線状の撹拌部材を設け、製紙原料の流れに対
し、該撹拌部材の前部で加圧を生じ、撹拌部材の後部で負圧を生じさせ、スクリーンの目
洗い作用を起こして精選させる製紙用スクリーン装置がある（特許文献２参照）。
この製紙用スクリーン装置にあっては、撹拌部材が斜めになることで、製紙原料流れ
が撹拌部材の傾斜に合わせ、抵抗を受け流す形となるため、動力の点では改善された。 Conventionally, a stirring member has been provided in parallel to the side surfaces excluding both end faces of a cylindrical papermaking rotor, and pressure is generated at the front of the stirring member and negative pressure is generated at the rear of the stirring member with respect to the flow of the papermaking raw material. Let
There is a paper-making screen device that causes the basket to be washed and is selected (Patent Document 1).
reference).
This papermaking screen device has a problem that it requires power because the papermaking raw material receives resistance of the papermaking raw material flow at a right angle to the agitating member and vertically, although the fine selection power is good. .
In order to remedy this problem, a linear stirring member having a downward gradient with respect to the papermaking raw material flow is provided on the side surfaces excluding both end faces of the cylindrical papermaking rotor, and the stirring is performed with respect to the papermaking raw material flow. There is a papermaking screen device in which pressure is generated at the front of the member, negative pressure is generated at the rear of the stirring member, and the screen is washed to be selected (see Patent Document 2).
In this papermaking screen device, since the stirring member is inclined, the flow of the papermaking raw material conforms to the inclination of the stirring member and receives resistance, so that the power is improved.

特開２００５−１７１４４９号公報JP 2005-171449 A 特開２００８−２２３１５１号公報JP 2008-223151 A

しかしながら、後者の製紙用スクリーン装置の撹拌部材は、製紙原料流れに対して下
がり勾配、つまり、斜め方向に直線状に形成されているため、撹拌部材に衝突した製紙原
料は斜め方向に直線状に導かれるため、下流側への流れが強くなり、スクリーンを通過し
ない製紙原料がリジェクト側へと強制的に送られるが、リジェクト側は流量調整バルブで
流量を制限しているため、原料流れが上流側に戻ってくる現象が起こっている。そのため
、スクリーンを通過できなかった異物も再度、上流側に戻ることなりスクリーンを通過し
てしまうため、精選力が十分でないという問題点があった。 However, since the stirring member of the latter papermaking screen device is formed in a downward gradient with respect to the flow of the papermaking raw material, that is, in a straight line in the oblique direction, the papermaking raw material colliding with the stirring member is linear in the oblique direction. As a result, the flow to the downstream side becomes stronger and the papermaking raw material that does not pass through the screen is forcibly sent to the reject side, but the flow rate is restricted by the flow adjustment valve on the reject side, so the raw material flow is upstream. The phenomenon of returning to the side is happening. For this reason, the foreign matter that could not pass through the screen again returns to the upstream side and passes through the screen, resulting in a problem that the selective power is not sufficient.

本発明は、上記の問題点を考慮してなされたもので、省エネルギーと精選効果をバラ
ンス良く達成することができる製紙用スクリーン装置を提供することを目的とする。 The present invention has been made in consideration of the above-described problems, and an object of the present invention is to provide a papermaking screen device that can achieve energy saving and a selective effect in a balanced manner.

請求項１記載のスクリーン装置は、製紙原料を受け入れる槽と、この槽を一次室と二次室に仕切るスクリーンと、前記槽の前記一次室に連通して前記槽に前記製紙原料を供給する製紙原料供給通路と、前記一次室に連通し、前記スクリーンを通過しない異物を含む前記製紙原料を前記槽の外へ排出する異物排出通路と、前記二次室に連通し、前記スクリーンを通過した前記製紙原料を前記槽の外へ排出する製紙原料排出通路と、 前記スクリーンの内側である前記一次室に回転自在に設けられ、前記一次室内の前記製紙原料を攪拌する円筒形状のローター本体とを備え、このローター本体の両端面を除く側面に設けられ、側面視、階段状の撹拌部材を有し、前記階段状の撹拌部材は、製紙原料流れに対して、下がり勾配に形成され、単一の撹拌部材は、長手方向の両端に対し中間部の幅が広い略三日月形状部材であり、前記階段状の撹拌部材は、複数個の前記単一の撹拌部材からなり、前記単一の撹拌部材の長手方向が前記円筒形状のローター本体の両端面に略平行で、且つ、前記単一の撹拌部材を隣接して階段状に複数形成し、更に、隣接する前記単一の撹拌部材は、製紙原料流れに対して上流の前記単一の撹拌部材の前記ローター本体の回転方向に対する先端部が下流の前記単一の撹拌部材の前記ローター本体の回転方向に対する先端部より前に位置し、前記単一の撹拌部材に設けられた雄ねじは前記円筒形状の前記ローター本体の孔を貫通し、前記円筒形状のローター本体内に位置する雌ネジに螺合して締め付けられ固定されているものである。 The screen device according to claim 1 is a papermaking machine that receives a papermaking raw material, a screen that partitions the tank into a primary chamber and a secondary chamber, and a papermaking material that communicates with the primary chamber of the tank and supplies the papermaking raw material to the tank. A raw material supply passage, a foreign matter discharge passage communicating with the primary chamber and containing the foreign matter that does not pass through the screen and discharging the papermaking raw material out of the tank, and a secondary chamber communicated with the secondary chamber and passed through the screen. a papermaking material discharge passage for discharging the papermaking material to the outside of the tub, rotatably provided in said primary chamber which is inside the screen, and b Ta body cylindrical stirring the papermaking material in the primary chamber comprising, provided on a side surface except for both end surfaces of the rotor body has a side view, stepped stirring member, the stepped stirring member, to the papermaking raw material flows, is formed in a downward slope, single Stirring The member is a substantially crescent shaped member having a wide intermediate portion with respect to both ends in the longitudinal direction, and the step-like stirring member includes a plurality of the single stirring members, and the length of the single stirring member The direction is substantially parallel to both end faces of the cylindrical rotor body, and a plurality of the single agitating members are formed adjacent to each other in a staircase pattern. The tip of the single stirring member upstream of the single stirring member with respect to the rotation direction of the rotor body is located before the tip of the single stirring member downstream of the single stirring member with respect to the rotation direction of the rotor body. The male screw provided in the stirring member passes through the hole of the cylindrical rotor main body, and is screwed and fixed to the female screw located in the cylindrical rotor main body .

また、請求項２記載のスクリーン装置は、製紙原料を受け入れる槽と、この槽を一次室と二次室に仕切るスクリーンと、前記槽の前記一次室に連通して前記槽に前記製紙原料を供給する製紙原料供給通路と、前記一次室に連通し、前記スクリーンを通過しない異物を含む前記製紙原料を前記槽の外へ排出する異物排出通路と、前記二次室に連通し、前記スクリーンを通過した前記製紙原料を前記槽の外へ排出する製紙原料排出通路と、前記スクリーンの内側である前記一次室に回転自在に設けられ、前記一次室内の前記製紙原料を攪拌する円筒形状のローター本体とを備え、このローター本体の両端面を除く側面に設けられ、側面視、階段状の撹拌部材を有し、前記階段状の撹拌部材は、製紙原料流れに対して、下がり勾配に形成され、単一の撹拌部材は、長手方向の両端に対し中間部の幅が広い略三日月形状部材であり、前記階段状の撹拌部材は、複数個の前記単一の撹拌部材からなり、前記単一の撹拌部材の長手方向が前記円筒形状のローター本体の両端面に略平行で、且つ、前記単一の撹拌部材を隣接して階段状に複数形成し、更に、隣接する前記単一の撹拌部材は、製紙原料流れに対して上流の前記単一の撹拌部材の前記ローター本体の回転方向に対する先端部が下流の前記単一の撹拌部材の前記ローター本体の回転方向に対する先端部より前に位置し、前記円筒形状のローター本体内に設けられた雄ねじは前記円筒形状のローター本体の孔を貫通し、前記単一の撹拌部材に設けられた雌ネジに螺合して締め付けられ固定されているものである。 The screen device according to claim 2 is a tank for receiving a papermaking raw material, a screen for partitioning the tank into a primary chamber and a secondary chamber, and communicating with the primary chamber of the tank to supply the papermaking raw material to the tank. A papermaking material supply passage that communicates with the primary chamber, the foreign material discharge passage that discharges the papermaking material containing foreign matter that does not pass through the screen, and the secondary chamber that communicates with the secondary chamber. A papermaking raw material discharge passage for discharging the papermaking raw material to the outside of the tank, a cylindrical rotor main body that is rotatably provided in the primary chamber inside the screen, and stirs the papermaking raw material in the primary chamber; Provided on the side surface excluding both end faces of the rotor body, and has a stair-like stirrer member in a side view, and the stair-like stirrer member is formed in a descending gradient with respect to the papermaking raw material flow. one Stirring member is a longitudinal substantially crescent shaped member width of the intermediate portion is wide with respect to both ends of the stepped stirring member comprises a plurality of said single agitating member, the single agitating member A longitudinal direction is substantially parallel to both end faces of the cylindrical rotor body, and a plurality of the single agitating members are formed adjacent to each other in a stepped manner. tip relative rotational direction of the rotor body of the single agitating member upstream is positioned before the tip relative to the rotation direction of the rotor body downstream of said single agitating member relative to the flow, the cylindrical The male screw provided in the rotor main body passes through the hole of the cylindrical rotor main body, and is screwed and fixed to the female screw provided in the single stirring member.

また、請求項３記載のスクリーン装置は、製紙原料を受け入れる槽と、この槽を一次室と二次室に仕切るスクリーンと、前記槽の前記一次室に連通して前記槽に前記製紙原料を供給する製紙原料供給通路と、前記一次室に連通し、前記スクリーンを通過しない異物を含む前記製紙原料を前記槽の外へ排出する異物排出通路と、前記二次室に連通し、前記スクリーンを通過した前記製紙原料を前記槽の外へ排出する製紙原料排出通路と、前記スクリーンの内側である前記一次室に回転自在に設けられ、前記一次室内の前記製紙原料を攪拌する円筒形状のローター本体とを備え、このローター本体の両端面を除く側面に設けられ、側面視、階段状の撹拌部材を有し、前記階段状の撹拌部材は、製紙原料流れに対して、下がり勾配に形成され、単一の撹拌部材は、長手方向の両端に対し中間部の幅が広い略三日月形状部材であり、前記階段状の撹拌部材は、複数個の前記単一の撹拌部材からなり、前記単一の撹拌部材の長手方向が前記円筒形状のローター本体の両端面に略平行で、且つ、前記単一の撹拌部材を隣接して階段状に複数形成し、更に、隣接する前記単一の撹拌部材は、製紙原料流れに対して上流の前記単一の撹拌部材の前記ローター本体の回転方向に対する先端部が下流の前記単一の撹拌部材の前記ローター本体の回転方向に対する先端部より前に位置しているものである。 The screen device according to claim 3 is a tank for receiving a papermaking raw material, a screen for partitioning the tank into a primary chamber and a secondary chamber, and communicating with the primary chamber of the tank to supply the papermaking raw material to the tank. A papermaking material supply passage that communicates with the primary chamber, the foreign material discharge passage that discharges the papermaking material containing foreign matter that does not pass through the screen, and the secondary chamber that communicates with the secondary chamber. A papermaking raw material discharge passage for discharging the papermaking raw material to the outside of the tank, a cylindrical rotor main body that is rotatably provided in the primary chamber inside the screen, and stirs the papermaking raw material in the primary chamber; Provided on the side surface excluding both end faces of the rotor body, and has a stair-like stirrer member in a side view, and the stair-like stirrer member is formed in a descending gradient with respect to the papermaking raw material flow. one Stirring member is a longitudinal substantially crescent shaped member width of the intermediate portion is wide with respect to both ends of the stepped stirring member comprises a plurality of said single agitating member, the single agitating member longitudinal direction substantially parallel to both end surfaces of the rotor body of the cylindrical and said plurality forming a single stirring member adjacent stepped further said single stirring member adjacent papermaking material those tip relative rotational direction of the rotor body of the single agitating member upstream relative to the flow is positioned in front of the distal end portion with respect to the rotational direction of the rotor body downstream of said single agitating member is there.

請求項１記載のスクリーン装置によれば、円筒形状のローター本体と、このローター
本体の両端面を除く側面に設けられ、側面視、階段状の撹拌部材とを備えた製紙用ロータ
ーであって、前記階段状の撹拌部材は、製紙原料流れに対して、下がり勾配に形成されて
いるため、階段状の撹拌部材で撹拌された製紙原料は、衝突抵抗をある程度受け流す形と
なり、動力を抑えられ、傾斜形状の撹拌部材より、下流側への強制流れが抑えられ、小ブ
ロック単位で精選作用を起こし、１段目（前段）で、精選されない製紙原料は下流側の隣
接する撹拌部材へと導かれ、下流側の隣接する撹拌部材と、この撹拌部材に対向するスク
リーンの部位とで、効率良く精選することができ、省エネルギー効果も期待出来るスクリ
ーン装置を得ることができる。 According to the screen device of claim 1, a paper-making rotor provided with a cylindrical rotor main body and side surfaces excluding both end surfaces of the rotor main body, and provided with stirrer members in a side view, stepwise, Since the stair-like stirrer is formed in a descending gradient with respect to the papermaking raw material flow, the papermaking raw material stirred by the staircase-like stirrer becomes a form that receives a certain amount of collision resistance, and power is suppressed. The forced flow to the downstream side is suppressed by the slanted stirrer, and a fine selection is performed in units of small blocks. In the first stage (previous stage), the papermaking raw material not selected is guided to the adjacent stirrer on the downstream side. In addition, it is possible to obtain a screen device that can be efficiently selected with an adjacent stirring member on the downstream side and a portion of the screen facing the stirring member, and that can also be expected to save energy.

また、請求項１記載のスクリーン装置によれば、隣接する単一の撹拌部材は、製紙原料流れに対して上流の前記単一の撹拌部材のローター本体の回転方向に対する先端部が下流の前記単一の撹拌部材のローター本体の回転方向に対する先端部より前に位置し、前記単一の撹拌部材に設けられた雄ねじは前記円筒形状のローター本体の孔を貫通し、前記円筒形状のローター本体内に位置する雌ネジに螺合して締め付けられ固定されているため、溶接による取り付けに比べ、円筒形状のローター本体の変形もなく、しかも、階段状の撹拌部材が損傷した場合、階段状の撹拌部材全体を交換するのではなく、損傷した単一の撹拌部材のみを迅速且つ容易に取り換えることができる。 Further, according to the screen apparatus of claim 1, wherein adjacent contact single stirring member, the papermaking raw material flows the tip relative to the rotational direction of the rotor body of the single agitating member upstream downstream of the single One stirring member is positioned in front of the tip of the rotor body in the rotation direction, and a male screw provided in the single stirring member passes through a hole in the cylindrical rotor body, and the inside of the cylindrical rotor body Since it is screwed into and fixed to the female screw located at, the cylindrical rotor body is not deformed compared to mounting by welding, and if the stirrer is damaged, the staircase Rather than replacing the entire member, only a single damaged stirring member can be replaced quickly and easily.

また、請求項２記載のスクリーン装置によれば、隣接する単一の撹拌部材は、製紙原料流れに対して上流の前記単一の撹拌部材のローター本体の回転方向に対する先端部が下流の前記単一の撹拌部材のローター本体の回転方向に対する先端部より前に位置し、前記円筒形状のローター本体内に設けられた雄ねじは前記円筒形状のローター本体の孔を貫通し、前記単一の撹拌部材に設けられた雌ネジに螺合して締め付けられ固定されているため、溶接による取り付けに比べ、円筒形状のローター本体の変形もなく、しかも、階段状の撹拌部材が損傷した場合、階段状の撹拌部材全体を交換するのではなく、損傷した単一の撹拌部材のみを迅速且つ容易に取り換えることができる。 Further, according to the screen apparatus of claim 2, adjacent contact single stirring member, the papermaking raw material flows the tip relative to the rotational direction of the rotor body of the single agitating member upstream downstream of the single A single stirring member is positioned in front of the tip of the rotor body in the rotational direction of the rotor body, and a male screw provided in the cylindrical rotor body passes through a hole in the cylindrical rotor body, and the single stirring member Since the cylindrical rotor body is not deformed compared to the attachment by welding, and the stair-like stirring member is damaged, the stair-like stirrer is damaged. Rather than replacing the entire stirring member, only a single damaged stirring member can be replaced quickly and easily.

また、請求項３記載のスクリーン装置によれば、隣接する単一の撹拌部材は、製紙原料流れに対して上流の前記単一の撹拌部材のローター本体の回転方向に対する先端部が下流の前記単一の撹拌部材のローター本体の回転方向に対する先端部より前に位置しているため、階段状の撹拌部材が損傷した場合、階段状の撹拌部材全体を交換するのではなく、損傷した単一の撹拌部材のみを効率良く取り換えることができる。
Further, according to the screen apparatus according to claim 3, adjacent contact single stirring member, the papermaking raw material flows the tip relative to the rotational direction of the rotor body of the single agitating member upstream downstream of the single Since one stirrer member is positioned before the tip of the rotor body in the rotation direction, if the staircase stirrer member is damaged, the entire staircase stirrer member is not replaced. Only the stirring member can be replaced efficiently.

図１は、本発明の一実施例のスクリーン装置の概略的断面図である。FIG. 1 is a schematic cross-sectional view of a screen device according to an embodiment of the present invention. 図２は、図１の製紙用ローターの概略的正面図である。FIG. 2 is a schematic front view of the papermaking rotor of FIG. 図３は、図２の製紙用ローターの概略的平面図である。FIG. 3 is a schematic plan view of the papermaking rotor of FIG. 図４は、図２の製紙用ローターと異なる他の実施例の製紙用ローターの概略的正面図である。FIG. 4 is a schematic front view of a papermaking rotor of another embodiment different from the papermaking rotor of FIG. 図５は、図４の製紙用ローターと異なる他の実施例の製紙用ローターの概略的正面図である。FIG. 5 is a schematic front view of a papermaking rotor of another embodiment different from the papermaking rotor of FIG. 図６は、図１のスクリーン装置と異なる他の実施例のスクリーン装置の概略的断面図である。FIG. 6 is a schematic cross-sectional view of a screen device of another embodiment different from the screen device of FIG. 図７は、図５の製紙用ローターと異なる他の実施例の製紙用ローターの概略的正面図である。FIG. 7 is a schematic front view of a papermaking rotor of another embodiment different from the papermaking rotor of FIG. 図８は、図７の製紙用ローターの概略的平面図である。FIG. 8 is a schematic plan view of the papermaking rotor of FIG. 図９は、図７の９−９線による概略的断面図である。FIG. 9 is a schematic cross-sectional view taken along line 9-9 of FIG. 図１０は、図７の一部を拡大して示す概略的一部正面図である。FIG. 10 is a schematic partial front view showing a part of FIG. 7 in an enlarged manner. 図１１（ａ）は、図９を分解して示す概略的分解断面図であり、図１１（ｂ）は、図１１（ａ）の単一の撹拌部材とローター本体との間に薄板材を介在させる場合の概略的分解断面図である。FIG. 11A is a schematic exploded cross-sectional view showing FIG. 9 in an exploded manner, and FIG. 11B shows a thin plate material between the single stirring member and the rotor body of FIG. It is a schematic exploded sectional view in the case of interposing. 図１２は、図１１（ａ）と異なる他の実施例の概略的分解断面図である。FIG. 12 is a schematic exploded cross-sectional view of another embodiment different from FIG.

本発明の一実施例の製紙用スクリーン装置及び製紙用ローターを、図面を参照して説
明する。
Ａはスクリーン装置で、スクリーン装置Ａは、製紙原料を受け入れる槽１と、この槽
１を一次室１１と二次室１２に仕切るスクリーン２と、スクリーン２の内側である一次室
１１に回転自在に設けられ、一次室１１内の製紙原料を攪拌する円筒形状の製紙用ロータ
ー６とを有する。 A papermaking screen device and a papermaking rotor according to an embodiment of the present invention will be described with reference to the drawings.
A is a screen device. The screen device A is freely rotatable to a tank 1 that receives papermaking raw materials, a screen 2 that partitions the tank 1 into a primary chamber 11 and a secondary chamber 12, and a primary chamber 11 that is inside the screen 2. And a cylindrical papermaking rotor 6 that stirs the papermaking raw material in the primary chamber 11.

スクリーン２は、例えば、円筒形状の側面に製紙原料を通過させる複数の開口部２１
［開口部２１は、例えば、棒状の長手形状部材を隙間（長手形状の隙間）を有して環状に
並設した場合の隙間、円筒形状の側面に設けた丸孔、スリット（例えば、細長い長方形状
の隙間）］を有したもので、底面部２２を開放して槽１内に立設して固定されている。 The screen 2 has, for example, a plurality of openings 21 through which a papermaking raw material passes through a cylindrical side surface.
[Opening 21 is, for example, a gap when rod-like long members are arranged in a ring shape with a gap (longitudinal gap), a round hole provided in a cylindrical side surface, a slit (for example, an elongated rectangle) The bottom portion 22 is opened and is fixed upright in the tank 1.

また、上述した製紙用ローター６は、図１乃至図３に示すように、円筒形状のロータ
ー本体６０と、このローター本体６０の両端面を除く側面６０ａに突出するように設けら
れた、側面視、階段状の撹拌部材６１とを備えている。
階段状の撹拌部材６１は、例えば、４つの部材を側面６０ａに、個々の部材毎に側面
６０ａに溶接してローター本体６０と一体化しても良いし、また、４つの部材を一体化し
て一部材に構成した撹拌部材６１を側面６０ａに溶接してローター本体６０と一体化して
も良い。 Further, as shown in FIGS. 1 to 3, the papermaking rotor 6 described above is provided so as to protrude from a cylindrical rotor body 60 and side surfaces 60 a excluding both end faces of the rotor body 60. And a stair-like stirring member 61.
For example, the stirrer-like stirring member 61 may be integrated with the rotor body 60 by welding four members to the side surface 60a and each member to the side surface 60a. The stirring member 61 formed as a member may be integrated with the rotor body 60 by welding to the side surface 60a.

階段状の撹拌部材６１は、製紙原料流れＸに対して、下がり勾配に形成されている。階段状の撹拌部材６１の単一の撹拌部材（各撹拌部材）は、長手方向の両端に対し中間部の幅が広い略三日月形状部材であり、例えば、６１ａ、６１ｂ、６１ｃ、６１ｄの４段で
構成されている。
階段状の撹拌部材６１は、複数個の単一の撹拌部材（各撹拌部材、例えば、６１ａ、６１ｂ、６１ｃ、６１ｄ）からなり、前記単一の撹拌部材の長手方向が円筒形状のローター本体６０の両端面に略平行で、且つ、前記単一の撹拌部材を隣接して階段状に複数形成し、更に、隣接する単一の撹拌部材６１ａ、６１ｂは、製紙原料流れに対して上流の単一の撹拌部材６１ａのローター本体６０の回転方向Ｙに対する先端部（衝突面）Ａが下流の単一の撹拌部材６１ｂのローター本体６０の回転方向Ｙに対する先端部（衝突面）Ｂより前に位置している。
また、同様に、隣接する単一の撹拌部材６１ｂ、６１ｃは、製紙原料流れＸに対して上流の単一の撹拌部材６１ｂのローター本体６０の回転方向Ｙに対する先端部（衝突面）Ｂが下流の単一の撹拌部材６１ｃのローター本体６０の回転方向Ｙに対する先端部（衝突面）Ｃより前に位置している。
また、同様に、隣接する単一の撹拌部材６１ｃ、６１ｄは、製紙原料流れＸに対して上流の単一の撹拌部材６１ｃのローター本体６０の回転方向Ｙに対する先端部（衝突面）Ｃが下流の単一の撹拌部材６１ｄのローター本体６０の回転方向Ｙに対する先端部（衝突面）Ｄより前に位置している。 The step-like stirring member 61 is formed in a descending gradient with respect to the papermaking raw material flow X. The single stirrer (each stirrer) of the stair-shaped stirrer 61 is a substantially crescent-shaped member having a wide middle portion with respect to both ends in the longitudinal direction. For example, four steps of 61a, 61b, 61c, 61d It consists of
The stirrer-shaped stirring member 61 is composed of a plurality of single stirring members (each stirring member, for example, 61a, 61b, 61c, 61d), and the longitudinal direction of the single stirring member is a cylindrical rotor body 60. A plurality of the single agitating members are formed adjacent to each other in a step shape, and the adjacent single agitating members 61a and 61b are arranged upstream of the papermaking raw material flow. The tip portion (collision surface) A of one stirring member 61a with respect to the rotation direction Y of the rotor body 60 is positioned before the tip portion (collision surface) B of the single stirring member 61b on the downstream side with respect to the rotation direction Y of the rotor body 60. doing.
Similarly, the adjacent single agitating members 61b and 61c have the downstream end portion (collision surface) B with respect to the rotation direction Y of the rotor body 60 of the single agitating member 61b upstream with respect to the papermaking raw material flow X. The single agitating member 61c is positioned in front of the front end portion (collision surface) C with respect to the rotation direction Y of the rotor body 60.
Similarly, the adjacent single agitating members 61c and 61d have downstream end portions (impact surfaces) C with respect to the rotational direction Y of the rotor body 60 of the single agitating member 61c upstream of the papermaking raw material flow X. The single stirring member 61d is positioned in front of the front end portion (collision surface) D with respect to the rotation direction Y of the rotor body 60.

なお、階段状の撹拌部材６１の段数は、４段に限らず、２段、３段、５段、６段等でも良い。また、各撹拌部材６１ａ、６１ｂ、６１ｃ、６１ｄの衝突面Ａ、Ｂ、Ｃ、Ｄは、図２記載のように、ローター本体６０の両端面を除く側面６０ａに平行となっているが、図４、図５記載のように傾斜するように形成しても良い。
また、製紙用ローター３は、図示しないモーターから動力伝達部材７（例えば、ベル
ト）を介して回転するようになっている。 Note that the number of steps of the stair-like stirring member 61 is not limited to four, but may be two, three, five, six, or the like. Further, the collision surfaces A, B, C, and D of the stirring members 61a, 61b, 61c, and 61d are parallel to the side surfaces 60a except for both end surfaces of the rotor body 60 as shown in FIG. 4. You may form so that it may incline like FIG.
The papermaking rotor 3 rotates from a motor (not shown) via a power transmission member 7 (for example, a belt).

３は、槽１の一次室１１に連通して槽１に製紙原料を供給する製紙原料供給通路で、
４は、一次室１１に連通し、スクリーン２を通過しない異物を含む製紙原料を槽１の外へ
排出する異物排出通路で、５は、二次室２２に連通し、スクリーン２を通過した製紙原料
を槽１の外へ排出する製紙原料排出通路である。 3 is a papermaking raw material supply passage that communicates with the primary chamber 11 of the tank 1 and supplies the papermaking raw material to the tank 1.
4 is a foreign matter discharge passage that communicates with the primary chamber 11 and discharges a papermaking raw material containing foreign matter that does not pass through the screen 2 to the outside of the tank 1. 5 is a papermaking passage that communicates with the secondary chamber 22 and passes through the screen 2. This is a papermaking raw material discharge passage for discharging the raw material out of the tank 1.

従って、製紙原料は一次室１１内に供給される。一次室１１内の製紙原料は、下流側
に行くにつれて、階段状の撹拌部材６１に衝突し、階段状の撹拌部材６１に衝突した製紙
原料は、階段状の撹拌部材６１を構成する各撹拌部材６１ａ、６１ｂ、６１ｃ、６１ｄに
逐次衝突し、衝突抵抗をある程度受け流す形となり、動力を抑えられ、傾斜形状の撹拌部
材より、下流側への強制流れが抑えられ、小ブロック単位で精選作用を起こし、１段目（
前段）で、精選されない製紙原料は下流側の隣接する撹拌部材へと導かれ、下流側の隣接
する撹拌部材と、この撹拌部材に対向するスクリーンの部位とで、効率良く精選すること
ができる。
その結果、精選効率を高めて、スクリーン２により精選された製紙原料は、製紙原料
排出通路５を介して槽１の外へと排出され、スクリーン２を通過できない異物を含む製紙
原料は、異物排出通路４を介して槽１の外へと排出されることとなる。
なお、製紙原料は、製紙用ローター３の回転に伴い各撹拌部材６１ａ、６１ｂ、６１
ｃ、６１ｄも回転し、各撹拌部材６１ａ、６１ｂ、６１ｃ、６１ｄの前部で、スクリーン
２に対し加圧を生じさせると共に、各撹拌部材６１ａ、６１ｂ、６１ｃ、６１ｄの後部で
、スクリーン２に対し負圧を生じさせて、スクリーン２に対し、目洗いの作用を行い製紙
原料を精選していく。 Accordingly, the papermaking raw material is supplied into the primary chamber 11. The papermaking raw material in the primary chamber 11 collides with the stair-like stirrer 61 as it goes downstream, and the papermaking raw material that collided with the stair-like stirrer 61 corresponds to each stirrer constituting the stepped stirrer 61. It collides with 61a, 61b, 61c, 61d in sequence, and receives a certain amount of collision resistance. The power is suppressed, and the forced flow to the downstream side is suppressed by the slanted stirring member, and the selective action is performed in units of small blocks. 1st stage (
In the first stage), the papermaking raw material that is not selected is led to the adjacent stirring member on the downstream side, and can be efficiently selected using the adjacent stirring member on the downstream side and the portion of the screen facing the stirring member.
As a result, the papermaking raw material selected by the screen 2 with a high selection efficiency is discharged out of the tank 1 through the papermaking raw material discharge passage 5, and the papermaking raw material containing foreign matters that cannot pass through the screen 2 is discharged as foreign matters. It will be discharged out of the tank 1 through the passage 4.
The papermaking raw materials are mixed with the stirring members 61a, 61b, 61 as the papermaking rotor 3 rotates.
c and 61d also rotate, and pressure is applied to the screen 2 at the front part of each stirring member 61a, 61b, 61c and 61d, and at the rear part of each stirring member 61a, 61b, 61c and 61d, On the other hand, a negative pressure is generated, and the screen 2 is screened to select the papermaking raw material.

上述した実施例のスクリーン装置Ａは、製紙原料を下方より流入させるタイプのスク
リーンであるが、本願発明にあっては、これに限らず、製紙原料を上方より流入させる図
６記載のスクリーン装置も同様に適用でき（図６に上述した実施例と同一部分に同一符号
を付してその説明を省略する。）、また、上述した実施例のスクリーン装置Ａの槽１は立
設しているが、本願発明にあっては、これに限らず、図示しないが、スクリーン装置Ａの
槽１を横臥するタイプのスクリーンでも同様に適用できるものである。 The screen device A of the embodiment described above is a type of screen in which the papermaking raw material is allowed to flow from below. However, in the present invention, the screen device illustrated in FIG. It can be applied in the same way (the same reference numerals are assigned to the same parts as those in the embodiment described above in FIG. 6 and the description thereof is omitted), and the tank 1 of the screen device A in the embodiment described above is erected. The invention of the present application is not limited to this, and although not shown in the drawings, the present invention can be similarly applied to a screen of a type lying on the tank 1 of the screen device A.

上述した実施例の階段状の撹拌部材６１は、例えば、４つの部材を側面６０ａに、個々の部材毎に側面６０ａに溶接してローター本体６０と一体化したが、本願発明にあっては、これに限らず、雄ねじと雌ネジによる固定でも良い（図７乃至図１２）。     For example, the stair-like stirring member 61 of the embodiment described above is integrated with the rotor body 60 by welding four members to the side surface 60a and for each individual member to the side surface 60a. Not limited to this, it may be fixed by a male screw and a female screw (FIGS. 7 to 12).

即ち、階段状の撹拌部材６１は、上述の実施例と同様、製紙原料流れＸに対して、下がり勾配に形成され，階段状の撹拌部材６１の単一の撹拌部材（各撹拌部材）は、長手方向の両端に対し中間部の幅が広い略三日月形状部材であり、例えば、６１ａ、６１ｂ、６１ｃ、６１ｄの４段で構成されている。
階段状の撹拌部材６１は、複数個の単一の撹拌部材（各撹拌部材、例えば、６１ａ、６１ｂ、６１ｃ、６１ｄ）からなり、前記単一の撹拌部材の長手方向が円筒形状のローター本体６０の両端面に略平行で、且つ、前記単一の撹拌部材を隣接して階段状に複数形成し、更に、隣接する単一の撹拌部材６１ａ、６１ｂは、製紙原料流れＸに対して上流の単一の撹拌部材６１ａのローター本体６０の回転方向Ｙに対する先端部（衝突面）Ａが下流の単一の撹拌部材６１ｂのローター本体６０の回転方向Ｙに対する先端部（衝突面）Ｂより前に位置している。
また、同様に、隣接する単一の撹拌部材６１ｂ、６１ｃは、製紙原料流れＸに対して上流の単一の撹拌部材６１ｂのローター本体６０の回転方向Ｙに対する先端部（衝突面）Ｂが下流の単一の撹拌部材６１ｃのローター本体６０の回転方向Ｙに対する先端部（衝突面）Ｃより前に位置している。
また、同様に、隣接する単一の撹拌部材６１ｃ、６１ｄは、製紙原料流れＸに対して上流の単一の撹拌部材６１ｃのローター本体６０の回転方向Ｙに対する先端部（衝突面）Ｃが下流の単一の撹拌部材６１ｄのローター本体６０の回転方向Ｙに対する先端部（衝突面）Ｄより前に位置している。
そして、図９、図１０、図１１（ａ）に示すように、前記単一の撹拌部材６１ｄに設けられた雄ねじ６１ｄＡは円筒形状のローター本体６０の孔６０ｈを貫通し、円筒形状のローター本体６０内に位置する雌ネジＭａに螺合して締め付けられ固定されている。 That is, the stair-like stirring member 61 is formed in a descending gradient with respect to the papermaking raw material flow X as in the above-described embodiment, and the single stirring member (each stirring member) of the stair-like stirring member 61 is: It is a substantially crescent shaped member having a wide intermediate portion with respect to both ends in the longitudinal direction, and is composed of, for example, four stages 61a, 61b, 61c, and 61d.
The stirrer-shaped stirring member 61 is composed of a plurality of single stirring members (each stirring member, for example, 61a, 61b, 61c, 61d), and the longitudinal direction of the single stirring member is a cylindrical rotor body 60. And a plurality of the single stirring members adjacent to each other are formed in a stepped manner, and the adjacent single stirring members 61a and 61b are upstream of the papermaking raw material flow X. The tip (impact surface) A of the single stirring member 61a with respect to the rotation direction Y of the rotor body 60 is ahead of the tip (impact surface) B of the downstream single stirring member 61b with respect to the rotation direction Y of the rotor body 60. positioned.
Similarly, the adjacent single agitating members 61b and 61c have the downstream end portion (collision surface) B with respect to the rotation direction Y of the rotor body 60 of the single agitating member 61b upstream with respect to the papermaking raw material flow X. The single agitating member 61c is positioned in front of the front end portion (collision surface) C with respect to the rotation direction Y of the rotor body 60.
Similarly, the adjacent single agitating members 61c and 61d have downstream end portions (impact surfaces) C with respect to the rotational direction Y of the rotor body 60 of the single agitating member 61c upstream of the papermaking raw material flow X. The single stirring member 61d is positioned in front of the front end portion (collision surface) D with respect to the rotation direction Y of the rotor body 60.
As shown in FIGS. 9, 10, and 11A, the male screw 61dA provided in the single stirring member 61d passes through the hole 60h of the cylindrical rotor body 60, and the cylindrical rotor body. It is fixed by being screwed into a female screw Ma located in 60.

単一の撹拌部材６１ａ、６１ｂ、６１ｃは、単一の撹拌部材６１ｄと同様、それぞれ単一の撹拌部材６１ａ、６１ｂ、６１ｃに設けられた雄ねじ(図示しないが、雄ねじ６１ｄＡと同様のものである。）は円筒形状のローター本体６０の孔(図示しないが、孔６０ｈと同様のものである。）６０ｈを貫通し、円筒形状のローター本体６０内に位置する雌ネジ(図示しないが、雌ネジＭａと同様のものである。）Ｍａに螺合して締め付けられ固定されている。図９乃至図１２に示すＷは、ワッシャーである。
なお、図７乃至図１１（ａ）記載の実施例にあっては、上述の実施例（図１乃至図６）と同一部分に同一符号を付して説明の一部を省略する。 The single stirring members 61a, 61b, and 61c are male screws (not shown, but similar to the male screw 61dA) provided on the single stirring members 61a, 61b, and 61c, respectively, similarly to the single stirring member 61d. .) Is a female screw (not shown, female screw not shown) that penetrates through the hole (not shown, but is similar to the hole 60h) of the cylindrical rotor main body 60 and is located in the cylindrical rotor main body 60. It is the same as Ma.) It is screwed into Ma and fastened and fixed. W shown in FIGS. 9 to 12 is a washer.
In the embodiment shown in FIGS. 7 to 11A, the same parts as those in the above-described embodiment (FIGS. 1 to 6) are denoted by the same reference numerals, and a part of the description is omitted.

図７乃至図１１（ａ）の階段状の撹拌部材６１の固定は、溶接による取り付けに比べ、円筒形状のローター本体６０の変形もなく、しかも、階段状の撹拌部材６１が損傷した場合、階段状の撹拌部材６１全体を交換するのではなく、損傷した単一の撹拌部材のみを迅速且つ容易に取り換えることができることとなる。また、 図１１（ｂ）に示すように、単一の撹拌部材６１ｄとローター本体６０との間に薄板材Ｔを介在させ、スクリーン２とのクリアランス調整を図ることもできる。     The fixing of the stair-like stirring member 61 in FIGS. 7 to 11 (a) is not caused by deformation of the cylindrical rotor body 60 as compared with attachment by welding. Instead of replacing the entire stirring member 61, only a single damaged stirring member can be replaced quickly and easily. Moreover, as shown in FIG.11 (b), the thin board | plate material T can be interposed between the single stirring member 61d and the rotor main body 60, and clearance adjustment with the screen 2 can also be aimed at.

また、図１１（ａ）に示すように、単一の撹拌部材６１ｄに設けられた雄ねじ６１ｄＡは円筒形状のローター本体６０の孔６０ｈを貫通し、円筒形状のローター本体６０内に位置する雌ネジＭｄに螺合して締め付けられ固定されているが、本願発明にあっては、これに限らず、図１２に示すように、円筒形状のローター本体６０内に設けられた雄ねじＶは円筒形状のローター本体６０の孔６０ｈを貫通し、単一の撹拌部材６１ｄに設けられた雌ネジＭｂに螺合して締め付けられ固定するようにしても良い。     Further, as shown in FIG. 11A, the male screw 61dA provided in the single stirring member 61d passes through the hole 60h of the cylindrical rotor body 60 and is located in the cylindrical rotor body 60. In the present invention, the present invention is not limited to this, and as shown in FIG. 12, the male screw V provided in the cylindrical rotor body 60 has a cylindrical shape. The hole 60h of the rotor main body 60 may be passed through and screwed into the female screw Mb provided in the single stirring member 61d to be fastened and fixed.

Ａ スクリーン装置
１ 槽
１１ 一次室
１２ 二次室
２ スクリーン
３ 製紙原料供給通路
４ 異物排出通路
５ 製紙原料排出通路
６０ ローター本体
６１ 階段状の突起 A Screen device 1 Tank 11 Primary chamber 12 Secondary chamber 2 Screen 3 Papermaking raw material supply passage 4 Foreign matter discharge passage 5 Papermaking raw material discharge passage 60 Rotor body 61 Step-like projection

Claims (3)

製紙原料を受け入れる槽と、
この槽を一次室と二次室に仕切るスクリーンと、
前記槽の前記一次室に連通して前記槽に前記製紙原料を供給する製紙原料供給通路と
、
前記一次室に連通し、前記スクリーンを通過しない異物を含む前記製紙原料を前記槽
の外へ排出する異物排出通路と、
前記二次室に連通し、前記スクリーンを通過した前記製紙原料を前記槽の外へ排出す
る製紙原料排出通路と、
前記スクリーンの内側である前記一次室に回転自在に設けられ、前記一次室内の前記
製紙原料を攪拌する円筒形状のローター本体とを備え、
このローター本体の両端面を除く側面に設けられ、側面視、階段状の撹拌部材を有し
、
前記階段状の撹拌部材は、製紙原料流れに対して、下がり勾配に形成され、
単一の撹拌部材は、長手方向の両端に対し中間部の幅が広い略三日月形状部材であり、
前記階段状の撹拌部材は、複数個の前記単一の撹拌部材からなり、前記単一の撹拌部材の長手方向が前記円筒形状のローター本体の両端面に略平行で、且つ、前記単一の撹拌部材を隣接して階段状に複数形成し、更に、隣接する前記単一の撹拌部材は、製紙原料流れに対して上流の前記単一の撹拌部材の前記ローター本体の回転方向に対する先端部が下流の前記単一の撹拌部材の前記ローター本体の回転方向に対する先端部より前に位置し、
前記単一の撹拌部材に設けられた雄ねじは前記円筒形状の前記ローター本体の孔を貫通し、前記円筒形状のローター本体内に位置する雌ネジに螺合して締め付けられ固定されている
ことを特徴とするスクリーン装置。 A tank for receiving papermaking raw materials,
A screen that partitions the tank into a primary chamber and a secondary chamber;
A papermaking raw material supply passage that communicates with the primary chamber of the tank and supplies the papermaking raw material to the tank;
A foreign matter discharge passage that communicates with the primary chamber and discharges the papermaking raw material containing foreign matter that does not pass through the screen to the outside of the tank;
A papermaking material discharge passage that communicates with the secondary chamber and discharges the papermaking material that has passed through the screen to the outside of the tank;
Rotatably provided to said primary chamber which is inside the screen, and a b Ta body cylindrical stirring the papermaking material in the primary chamber,
Provided on the side surface excluding both end surfaces of the rotor body, and has a stair-like stirring member in side view
The step-like stirring member is formed in a descending gradient with respect to the papermaking raw material flow ,
The single stirring member is a substantially crescent-shaped member having a wide intermediate portion with respect to both ends in the longitudinal direction.
The step-like stirring member is composed of a plurality of the single stirring members, and the longitudinal direction of the single stirring member is substantially parallel to both end faces of the cylindrical rotor body, and the single stirring member A plurality of stirrer members are formed adjacent to each other in a stepped manner, and the adjacent single stirrer member has a tip portion of the single stirrer member upstream of the papermaking raw material flow with respect to the rotation direction of the rotor body. Located downstream of the tip of the single stirring member downstream with respect to the direction of rotation of the rotor body,
The male screw provided on the single stirring member passes through the hole of the cylindrical rotor body, and is screwed and fixed to the female screw located in the cylindrical rotor body. Feature screen device. 製紙原料を受け入れる槽と、
この槽を一次室と二次室に仕切るスクリーンと、
前記槽の前記一次室に連通して前記槽に前記製紙原料を供給する製紙原料供給通路と
、
前記一次室に連通し、前記スクリーンを通過しない異物を含む前記製紙原料を前記槽
の外へ排出する異物排出通路と、
前記二次室に連通し、前記スクリーンを通過した前記製紙原料を前記槽の外へ排出す
る製紙原料排出通路と、
前記スクリーンの内側である前記一次室に回転自在に設けられ、前記一次室内の前記
製紙原料を攪拌する円筒形状のローター本体とを備え、
このローター本体の両端面を除く側面に設けられ、側面視、階段状の撹拌部材を有し
、
前記階段状の撹拌部材は、製紙原料流れに対して、下がり勾配に形成され、

単一の撹拌部材は、長手方向の両端に対し中間部の幅が広い略三日月形状部材であり、
前記階段状の撹拌部材は、複数個の前記単一の撹拌部材からなり、前記単一の撹拌部材の長手方向が前記円筒形状のローター本体の両端面に略平行で、且つ、前記単一の撹拌部材を隣接して階段状に複数形成し、更に、隣接する前記単一の撹拌部材は、製紙原料流れに対して上流の前記単一の撹拌部材の前記ローター本体の回転方向に対する先端部が下流の前記単一の撹拌部材の前記ローター本体の回転方向に対する先端部より前に位置し、
前記円筒形状のローター本体内に設けられた雄ねじは前記円筒形状のローター本体の孔を貫通し、前記単一の撹拌部材に設けられた雌ネジに螺合して締め付けられ固定されている
ことを特徴とするスクリーン装置。 A tank for receiving papermaking raw materials,
A screen that partitions the tank into a primary chamber and a secondary chamber;
A papermaking raw material supply passage that communicates with the primary chamber of the tank and supplies the papermaking raw material to the tank;
,
The said papermaking raw material containing the foreign material which is connected to the said primary chamber and does not pass the said screen is said tank.
A foreign matter discharge passage for discharging to the outside,
Communicating with the secondary chamber and discharging the papermaking raw material that has passed through the screen out of the tank
A papermaking material discharge passage,
The primary chamber that is inside the screen is rotatably provided, and the primary chamber
A cylindrical rotor body for stirring the papermaking raw material,
This rotor body is provided on the side surface excluding both end surfaces, and has a stirrer stirrer in side view.
,
The step-like stirring member is formed in a descending gradient with respect to the papermaking raw material flow,

The single stirring member is a substantially crescent-shaped member having a wide intermediate portion with respect to both ends in the longitudinal direction.
The step-like stirring member is composed of a plurality of the single stirring members, and the longitudinal direction of the single stirring member is substantially parallel to both end faces of the cylindrical rotor body, and the single stirring member adjacent the stirring member forms a plurality stepwise, further said single stirring member adjacent the tip portion with respect to the rotational direction of the rotor body of said single stirring member upstream relative to the paper stock flow located in front of the distal end portion with respect to the rotational direction of the rotor body downstream of said single stirring member,
The male screw provided in the cylindrical rotor main body passes through the hole of the cylindrical rotor main body, and is screwed and fixed to the female screw provided in the single stirring member. features and be away clean equipment. 製紙原料を受け入れる槽と、
この槽を一次室と二次室に仕切るスクリーンと、
前記槽の前記一次室に連通して前記槽に前記製紙原料を供給する製紙原料供給通路と
、
前記一次室に連通し、前記スクリーンを通過しない異物を含む前記製紙原料を前記槽
の外へ排出する異物排出通路と、
前記二次室に連通し、前記スクリーンを通過した前記製紙原料を前記槽の外へ排出す
る製紙原料排出通路と、
前記スクリーンの内側である前記一次室に回転自在に設けられ、前記一次室内の前記
製紙原料を攪拌する円筒形状のローター本体とを備え、
このローター本体の両端面を除く側面に設けられ、側面視、階段状の撹拌部材を有し
、
前記階段状の撹拌部材は、製紙原料流れに対して、下がり勾配に形成され、
単一の撹拌部材は、長手方向の両端に対し中間部の幅が広い略三日月形状部材であり、
前記階段状の撹拌部材は、複数個の前記単一の撹拌部材からなり、前記単一の撹拌部材の長手方向が前記円筒形状のローター本体の両端面に略平行で、且つ、前記単一の撹拌部材を隣接して階段状に複数形成し、更に、隣接する前記単一の撹拌部材は、製紙原料流れに対して上流の前記単一の撹拌部材の前記ローター本体の回転方向に対する先端部が下流の前記単一の撹拌部材の前記ローター本体の回転方向に対する先端部より前に位置している
ことを特徴とするスクリーン装置。 A tank for receiving papermaking raw materials,
A screen that partitions the tank into a primary chamber and a secondary chamber;
A papermaking raw material supply passage that communicates with the primary chamber of the tank and supplies the papermaking raw material to the tank;
,
The said papermaking raw material containing the foreign material which is connected to the said primary chamber and does not pass the said screen is said tank.
A foreign matter discharge passage for discharging to the outside,
Communicating with the secondary chamber and discharging the papermaking raw material that has passed through the screen out of the tank
A papermaking material discharge passage,
The primary chamber that is inside the screen is rotatably provided, and the primary chamber
A cylindrical rotor body for stirring the papermaking raw material,
This rotor body is provided on the side surface excluding both end surfaces, and has a stirrer stirrer in side view.
,
The step-like stirring member is formed in a descending gradient with respect to the papermaking raw material flow,
The single stirring member is a substantially crescent-shaped member having a wide intermediate portion with respect to both ends in the longitudinal direction.
The stepped stirring member comprises a plurality of said single agitating member, said substantially parallel longitudinal single stirring members on both end faces of the rotor body of the cylindrical and, in the single adjacent the stirring member forms a plurality stepwise, further said single stirring member adjacent the tip portion with respect to the rotational direction of the rotor body of said single stirring member upstream relative to the paper stock flow downstream of said single feature and be away clean device that is positioned in front of the distal end portion with respect to the rotational direction of the rotor body of the stirring member.
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KR1020140000035A KR101924348B1 (en) 2013-01-10 2014-01-02 Papermaking screen device
EP14150389.6A EP2754749A1 (en) 2013-01-10 2014-01-07 Papermaking screen apparatus
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US5192438A (en) * 1983-03-07 1993-03-09 A. Ahlstrom Corporation Rotating element for screening apparatus with a contour surface produced by a plurality of protrusions in the direction of the axial length of the rotor
DE3572928D1 (en) * 1984-12-25 1989-10-19 Mitsubishi Heavy Ind Ltd Pressure slit screen
JP3076645B2 (en) * 1991-11-26 2000-08-14 株式会社サトミ製作所 Stock selection equipment
FI92227C (en) * 1992-04-23 1994-10-10 Ahlstroem Oy Apparatus for processing the fiber suspension
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