JPS5810517B2 - Dewatering nozzle body in the nip section of a paper machine - Google Patents
Dewatering nozzle body in the nip section of a paper machineInfo
- Publication number
- JPS5810517B2 JPS5810517B2 JP54136314A JP13631479A JPS5810517B2 JP S5810517 B2 JPS5810517 B2 JP S5810517B2 JP 54136314 A JP54136314 A JP 54136314A JP 13631479 A JP13631479 A JP 13631479A JP S5810517 B2 JPS5810517 B2 JP S5810517B2
- Authority
- JP
- Japan
- Prior art keywords
- conveyor belt
- nip
- suction
- nozzle body
- section
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Landscapes
- Paper (AREA)
Description
【発明の詳細な説明】
この発明は抄紙機において、下面に湿紙を耐着して走行
する抄網、フェルト等の搬送帯上面にクーチロールなど
のニップ用のローラないしシリンダ（本書ではニップロ
ーラと記す。Detailed Description of the Invention This invention provides a paper machine with a nip roller or cylinder (referred to as a nip roller in this book) such as a couch roll on the top surface of a conveyor belt such as a paper screen or felt that runs with wet paper adhering to the bottom surface. .
）が加圧接触し、これにより搬送帯とニップローラで形
成された鋭角状の空間内でニップ圧によって搬送帯上面
上に搾出される湿紙中の水分を吸引除去する改良された
ニップ部における脱水用ノズル体に関する。) come into pressure contact with each other, and this improves dewatering in the nip section, which suctions and removes moisture in the wet paper that is squeezed out onto the top surface of the conveyor belt by nip pressure within the acute-angled space formed by the conveyor belt and the nip roller. Regarding a nozzle body for use.
従来、ニップ部において搬送帯上面にニップ圧で搾出さ
れた湿紙水分を除去するには、一般に第１図に示す如く
ナツシュポンプと接続した吸引ダクト１から延びるノズ
ル２を搬送帯３の上面とニップローラの周面４で形成さ
れた鋭角状空間５内に突入させてその先端の吸引部を搬
送帯上面に摺接し、ナツシュポンプの吸引力のみで強制
的に吸引し、脱水していた。Conventionally, in order to remove moisture squeezed out from the wet paper web by nip pressure onto the upper surface of the conveyor belt at the nip portion, generally, as shown in FIG. The nip roller was inserted into an acute-angled space 5 formed by the circumferential surface 4, and the suction section at the tip of the nip roller was brought into sliding contact with the upper surface of the conveying belt, and dewatering was performed by forcibly suctioning only with the suction force of the nutsch pump.
従ってポンプの稼動に大電力を要し、且つ騒音を発生す
ると言う問題点があると共に、ノズル先端の吸引部と搬
送帯は摩擦により摩耗するので定期的に交換することが
必要であり、これに手数、費用がか〜る。Therefore, there are problems in that the pump requires a large amount of power to operate and generates noise, and the suction part and conveyance band at the tip of the nozzle wear out due to friction, so they need to be replaced periodically. It takes time and money.
このため、特開昭５１−１４３７０６では搬送帯下面か
らの吸引部の直前（但し搬送帯の走行方向に対しては吸
引部を通過した直後の位置）に熱風ないしエアを対向流
として下から吹付け、これにより吸引部と搬送帯との間
に真空状態を発生させ、大きな脱水吸引力を誘起して、
ナツシュポンプによらず、小さなファンででも充分な脱
水引力を得ることが提案されている。For this reason, in JP-A-51-143706, hot air or air is blown from below as a counterflow just before the suction part from the bottom surface of the conveyor belt (but at a position immediately after passing the suction part with respect to the running direction of the conveyor belt). This creates a vacuum between the suction part and the conveyor belt, inducing a large dehydration suction force,
It has been proposed that even a small fan can provide sufficient dewatering force without relying on a Natsch pump.
確かに、この方法によって大電力の消費、騒音の発生は
解消し、又、搬送帯とノズル先端部との摩擦力も従来よ
りは低減できるのでノズル、搬送帯の使用寿命は延長す
る。It is true that this method eliminates the consumption of large amounts of power and the generation of noise, and also reduces the frictional force between the conveying belt and the tip of the nozzle compared to the conventional method, thereby extending the service life of the nozzle and the conveying belt.
しかし、ノズル先端部を搬送帯面から離すと、生起する
脱水吸引力は著しく弱まるので非接触にすることはでき
ず、使用寿命が延び、交換期間が長（なったとは言え定
期的な交換は必要であり、これに手数費用が矢張りか〜
る。However, when the nozzle tip is moved away from the conveyor belt surface, the dehydration suction force that occurs is significantly weakened, so it cannot be made non-contact. Is it necessary and the handling cost is high?
Ru.
そこで本発明は、大電力消費、騒音発生を解消した上記
先行技術（特開昭５ｌ−１４３７０６）の長所はそのま
匁採用し、ニップ部において搬送帯上向上に搾出される
水分をいかにして搬送帯上面と非接触の状態でノズルを
通じ吸引、脱水するか研究した結果、開発されたのであ
って、以下これを第２図以降の実施例によって説明する
。Therefore, the present invention utilizes the advantages of the above-mentioned prior art (Japanese Unexamined Patent Publication No. 51-143706), which eliminates large power consumption and noise generation, and solves the problem of water squeezed out onto the conveyor belt at the nip portion. It was developed as a result of research into suction and dehydration through a nozzle without contacting the upper surface of the conveyor belt, and this will be explained below with reference to embodiments from FIG. 2 onwards.
本発明の原理は吸引部の回りに熱風、温風、常温空気（
エア）などの気体を搬送帯の走行方向に対し順方向に吹
出す噴出部を有するノズル体を用い、その吸引部、噴出
部を搬送帯から離した非接触状態でニップロールと搬送
帯の間の鋭角状空間に搬送帯の走行方向と同方向に突入
させ、噴出部から搬送帯の走行方向に対し順方向に吹出
した気体によるエアカーテンで囲われた内部において搬
出帯下面上に搾出された水分を吸引、脱水するのである
。The principle of the present invention is that hot air, hot air, and room temperature air (
A nozzle body with a jetting part that blows out gas such as air) in the forward direction with respect to the running direction of the conveyor belt is used, and the suction part and the jetting part are separated from the conveyor belt in a non-contact state between the nip roll and the conveyor belt. The gas was forced into the acute-angled space in the same direction as the conveyor belt running direction, and the gas was blown out from the ejection part in the forward direction with respect to the conveyor belt running direction. Inside the interior surrounded by an air curtain, the gas was squeezed out onto the lower surface of the conveyor belt. It absorbs water and dehydrates it.
第２図は本発明で用いることができるノズル体６を示し
、その先端部には搬送帯と略々等幅、好ましくは少し狭
い吸引部７を挾んで上下と左右に夫々噴出部８，８と９
，９があり、吸引部７は上下の噴出部８，８と、左右の
噴出部９，９で囲われている。FIG. 2 shows a nozzle body 6 that can be used in the present invention, with a suction part 7 at its tip having approximately the same width as the conveyance belt, preferably slightly narrower, and spouting parts 8 and 8 on the upper and lower and left and right sides, respectively. and 9
, 9, and the suction part 7 is surrounded by upper and lower ejection parts 8, 8 and left and right ejection parts 9, 9.
吸引部７、上下の噴出部８，８は夫々一層であるが、第
３図に示す様にその一部或は全部を多層にしてもよい。The suction section 7 and the upper and lower ejection sections 8, 8 each have a single layer, but as shown in FIG. 3, some or all of them may have multiple layers.
そして、図示の如（上の噴出部の生端面８′は斜上向き
にしてニップローラの周面に対向させ、下の噴出部の先
端部８“は斜下向きにして搬送帯上面に対向させ、左右
側方にある噴出部９，９は吸引部７の先端を越えて突出
させ、夫々の先端面９′。Then, as shown in the figure (the raw end surface 8' of the upper spouting part is oriented diagonally upward and facing the circumferential surface of the nip roller, the tip part 8'' of the lower spouting part is oriented diagonally downward and facing the upper surface of the conveying belt, and the left and right The spouts 9, 9 on the sides project beyond the tip of the suction section 7, and have respective tip surfaces 9'.
９イは図示の如く内向きの斜面とする。9A is an inward slope as shown in the figure.
これにより、一般には搬送帯の幅はニップローラの軸方
向長さより少し幅広で、ニップローラの各端部から外に
少し宛はみ出し、搬送帯下面に付着した湿紙の幅はニッ
プローラの軸方向長さより少し幅狭で、その各側縁はニ
ップローラの各端部の内側にあるので、吸引部の幅を搬
送帯と等幅或いはこれより少し広目にすれば第３図に示
す様にノズル体の先端部の上下の斜面８′、８“がニッ
プローラと搬送帯に夫々近接するまで深（鋭角状空間５
の奥に差込むことができ左右から突出した内向き斜面の
先端面９’、９’はノズル先端部よりも前方の空間の奥
を両側から遮へいし、斜面８′、８“、先端部９’、９
’に開口して吸引部の回りを囲っている噴出部８，８゜
９．９はそこから噴出する気体によって大気圧に対しシ
ールされた扁平な筒形のエアカーテンをノズルの先端か
ら鋭角状空間５の奥に向けて形成する。As a result, the width of the conveying belt is generally a little wider than the axial length of the nip roller, and it protrudes slightly outward from each end of the nip roller, and the width of the wet paper attached to the bottom surface of the conveying belt is slightly wider than the axial length of the nip roller. The width is narrow, and each side edge is inside each end of the nip roller, so if the width of the suction part is made equal to or slightly wider than the conveyance belt, the tip of the nozzle body will be drawn as shown in Figure 3. Deep (acute-angled space 5) until the upper and lower slopes 8' and 8'' of the
The tip surfaces 9', 9' of the inward slopes that can be inserted deep into the nozzle and protrude from the left and right sides shield the depths of the space in front of the nozzle tip from both sides. ', 9
The ejection part 8, 8゜9.9 opens at the end of the nozzle and surrounds the suction part. It is formed toward the back of the space 5.
ノズル体６０基部には送風機の吸引側に連絡した吸引ダ
クト１０と、送風機の吐出側に連絡した送風ダクト１１
があり、吸引部７は吸引ダクト１０に、噴出部８，８．
９，９は送風ダクト１１に通じている。At the base of the nozzle body 60, there are a suction duct 10 connected to the suction side of the blower and a blower duct 11 connected to the discharge side of the blower.
The suction section 7 is connected to the suction duct 10, and the ejection sections 8, 8 .
9 and 9 communicate with the ventilation duct 11.
吸引ダクト１０に吸引側を連絡した送風機と、吐出側を
送風ダクト１１に連絡した送風機は夫々別個のものとす
ることもできるが、第３図に示した如（一つの送風機１
２の吸引側にセパレートタンク１３を介して吸引ダクト
１０を連絡し、その吐出側を送風ダクト１１に連絡する
ことにより一つの送風機とすることもできる。The blower whose suction side is connected to the suction duct 10 and the blower whose discharge side is connected to the blower duct 11 can be separate, but as shown in FIG.
By connecting the suction side of the two to the suction duct 10 via a separate tank 13, and connecting the discharge side to the blower duct 11, it is possible to form a single blower.
尚、セパレートタンク１３からはドレンポンプ１４で排
水できる様にする。Note that the separate tank 13 can be drained by a drain pump 14.
このノズル体６は前述した様に鋭角状空間５中に搬送帯
の走行方向と同方向に突入し、吸引部７はニップ部ａ１
上の噴出部８はニップローラの下周部、下の噴出部８は
搬送帯３の上面、左右の噴出部９，９は搬送帯とニップ
ローラの各側部上に非接触状態で位置させる。As described above, this nozzle body 6 protrudes into the acute-angled space 5 in the same direction as the traveling direction of the conveying belt, and the suction part 7 is inserted into the nip part a1.
The upper spouting part 8 is located on the lower peripheral part of the nip roller, the lower spouting part 8 is located on the upper surface of the conveyance belt 3, and the left and right spouting parts 9 are located on each side of the conveyance belt and the nip roller in a non-contact state.
そして、送風機１２を運転すると各噴出部からは気体が
搬送帯の走行方向に吹出して鋭角状空間５の奥部を扁平
筒状の気体カーテンで外気に対して密封し、高い正圧を
発生し、同時に吸引部７には負圧が生じる。When the blower 12 is operated, gas is blown out from each blowout part in the traveling direction of the conveyor belt, sealing the deep part of the acute-angled space 5 from the outside air with a flat cylindrical gas curtain, and generating high positive pressure. At the same time, negative pressure is generated in the suction section 7.
この吸引部Ｉに生じる負圧は噴出部から吹出した気体カ
ーテンで囲まれた内部に生じるので、その回りの気体カ
ーテンの高ぃ正圧によって高められ非常に強力な吸引脱
水力を誘起し、ニップ圧で搬送帯上面に搾出された湿紙
の水分を強力に吸引し、セパレートタンク１３に抽出す
る。This negative pressure generated in the suction part I is generated inside the area surrounded by the gas curtain blown out from the ejection part, so it is increased by the high positive pressure of the surrounding gas curtain and induces a very strong suction dehydration force, The moisture in the wet paper squeezed out onto the upper surface of the conveyor belt by pressure is strongly sucked and extracted into a separate tank 13.
そして、搬送帯３の下面に耐着した湿紙はニップローラ
４と対をなす下部ニップローラ４′にツブローラがクー
チローラの場合は湿紙を抄造した丸網シリンダー）で下
から支持されているため鋭角状空間５の奥内部で噴出部
より吹出して生じた高い正圧によって地合を崩されるこ
とはな（、逆にこの正圧でより強（挟圧されて脱水を足
進される。The wet paper that has adhered to the lower surface of the conveyor belt 3 is supported from below by a lower nip roller 4' that forms a pair with the nip roller 4 (if the tube roller is a couch roller, the wet paper is made into a circular cylinder), so that it forms an acute angle. The soil will not be disturbed by the high positive pressure generated by blowing out from the spout inside the space 5 (on the contrary, it will be compressed and the dehydration will be accelerated by this positive pressure).
そして、搬送帯下面から吸引する場合、吸引位置の直前
で気体を搬送帯下面に対し向流的に吹付けると搬送帯中
に金車れている白水を気体によって飛散させ、重力落下
により分離することができるが、この発明の様に搬送帯
上面に気体を吹付ける場合に搬送帯の走行方向に対して
向流にすると搬送帯中に含まれていた白水は飛散しても
その殆どは再び搬送帯上に落ちて搬送帯を再湿潤するだ
けであり、却って飛散の際に搬出帯下面の湿紙にピンホ
ールを生じさせる等の問題点があるため順方向に吹付け
るのである。When suctioning from the bottom surface of the conveyor zone, if gas is blown against the bottom surface of the conveyor belt in a countercurrent manner just before the suction position, the white water contained in the conveyor zone will be scattered by the gas and separated by gravity fall. However, when blowing gas onto the top surface of the conveyor belt as in this invention, if the flow is countercurrent to the running direction of the conveyor belt, even if the white water contained in the conveyor belt is scattered, most of it will not return. It simply falls onto the conveying belt and rewets the conveying belt, and on the contrary, it is sprayed in the forward direction because there are problems such as creating pinholes in the wet paper on the bottom surface of the unloading belt when it scatters.
尚、セパレートタンク１３には乾燥部のドライヤからド
レンを供給するなどして各噴出部８，８゜９．９からは
温度の高い熱風、温風を吹出させると周囲の大気、搬送
帯を構成する素材や水分はその熱で膨張して体積を増す
ので脱水は更に促進される。In addition, the separate tank 13 is supplied with drain from a dryer in the drying section, and high-temperature hot air is blown out from each spouting section 8, 8, 9, 9, and the surrounding atmosphere forms a conveyance zone. The heat causes the material and moisture to expand and increase in volume, further accelerating dehydration.
以上で明らかな如（本発明によれば吸引部７、噴出部８
，８．９，９を全（搬送帯に接触させないで極めて強力
に吸引、脱水を行うことができ、大電力の消費、騒音の
発生が無い以外に、抄網、毛布等の消耗、ノズルの摩耗
は絶無で、交換の手数、費用、ひいてはそのための製紙
作業の中断等の問題点を完全に一掃できる。As is clear from the above (according to the present invention, the suction part 7, the ejection part 8
, 8.9, 9 (can perform extremely strong suction and dewatering without contacting the conveyor belt, does not consume large amounts of electricity, does not generate noise, and does not cause wear of paper nets, blankets, etc., and nozzle There is no wear and tear, and problems such as the trouble and cost of replacement, and even the interruption of paper manufacturing operations, can be completely eliminated.
尚、本発明は丸網シリンダとクーチロールからなるワイ
ヤバートでのニップ部以外に、対のニップロールによる
プレスパートでのニップ部にもそのま匁適用できると共
に、既設の抄紙機のニップを簡単に改造して実施するこ
とができる。The present invention can be applied directly to the nip part of a press part made of a pair of nip rolls, in addition to the nip part of a wire bart made up of a circular mesh cylinder and couch roll, and can be easily modified to the nip part of an existing paper machine. It can be implemented by
第１図は従来のニップ部の吸引脱水装置の側面図、第２
図は本発明に用いることができるノズル体を示す部分断
面斜視図、第３図は本発明による装置の一実施例の縦断
側面図、第４図は同上の一部の一部を欠截した平面図で
、図中、３は搬送帯、４はニップローラ、５は鋭角状空
間、６はノズル体、７は吸引部、８，８．９，９は噴出
部を示す。Figure 1 is a side view of a conventional nip suction dewatering device;
The figure is a partial cross-sectional perspective view showing a nozzle body that can be used in the present invention, FIG. 3 is a vertical cross-sectional side view of an embodiment of the device according to the present invention, and FIG. In the plan view, 3 is a conveyance belt, 4 is a nip roller, 5 is an acute-angled space, 6 is a nozzle body, 7 is a suction part, and 8, 8, 9, and 9 are jet parts.
Claims (1)
に加圧接触するニップロールで形成される鋭角状空間内
に搬送帯の走行方向と同方向に先端部を突入し、ニップ
圧によって搬送帯の上面上に搾出される水分を吸引、除
去するための抄紙機のニップ部における脱水用ノズル体
において、先端部に開口した搬送帯とはＶ等幅な吸引部
を挾んで上にはニップローラの周面に対向する斜上向き
の斜面、下には搬送帯の上面に対向する斜下向きの斜面
を設け、各斜面には送風機の吐出側に接続した噴出部を
開口し、吸引部の左右には吸引部よりも前に少し突出し
た内向きの斜面を設けてここにも送風機の吐出側に接続
した噴出部を開口したことを特徴とする抄紙機のニップ
部における脱水用ノズル体。1 Insert the tip in the same direction as the running direction of the conveyor belt into the acute-angled space formed by the conveyor belt that runs with the wet paper adhering to the lower surface and the nip roll that pressurizes the upper surface of the conveyor belt, and apply the nip pressure. In a dewatering nozzle body in the nip section of a paper machine for sucking and removing water squeezed out onto the upper surface of the conveyor belt by has an inclined upward slope facing the circumferential surface of the nip roller, and a downward inclined slope facing the upper surface of the conveyor belt, and each slope has an opening connected to the discharge side of the blower, and a suction section. A nozzle body for dewatering in a nip section of a paper machine, characterized in that inward slopes are provided on the left and right sides that project slightly in front of a suction section, and a spout section connected to the discharge side of a blower is also opened here.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP54136314A JPS5810517B2 (en) | 1979-10-24 | 1979-10-24 | Dewatering nozzle body in the nip section of a paper machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP54136314A JPS5810517B2 (en) | 1979-10-24 | 1979-10-24 | Dewatering nozzle body in the nip section of a paper machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5663091A JPS5663091A (en) | 1981-05-29 |
| JPS5810517B2 true JPS5810517B2 (en) | 1983-02-25 |
Family
ID=15172300
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP54136314A Expired JPS5810517B2 (en) | 1979-10-24 | 1979-10-24 | Dewatering nozzle body in the nip section of a paper machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5810517B2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54156804A (en) * | 1978-05-31 | 1979-12-11 | Ikuo Araoka | Recovery of dehydrated solution in press dehydrating section of wet paper |
-
1979
- 1979-10-24 JP JP54136314A patent/JPS5810517B2/en not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54156804A (en) * | 1978-05-31 | 1979-12-11 | Ikuo Araoka | Recovery of dehydrated solution in press dehydrating section of wet paper |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5663091A (en) | 1981-05-29 |
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