JPH0299683A - Nip pressing apparatus of paper-making machine - Google Patents
Nip pressing apparatus of paper-making machineInfo
- Publication number
- JPH0299683A JPH0299683A JP24706188A JP24706188A JPH0299683A JP H0299683 A JPH0299683 A JP H0299683A JP 24706188 A JP24706188 A JP 24706188A JP 24706188 A JP24706188 A JP 24706188A JP H0299683 A JPH0299683 A JP H0299683A
- Authority
- JP
- Japan
- Prior art keywords
- fabric
- belt
- felt
- water
- wet paper
- 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.)
- Granted
Links
- 239000004744 fabric Substances 0.000 claims abstract description 46
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 42
- 238000000034 method Methods 0.000 abstract description 3
- 238000010030 laminating Methods 0.000 abstract 1
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 244000226021 Anacardium occidentale Species 0.000 description 2
- 235000020226 cashew nut Nutrition 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 2
- 238000003809 water extraction Methods 0.000 description 2
- 238000009941 weaving Methods 0.000 description 2
- 239000002759 woven fabric Substances 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
Landscapes
- Paper (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は抄紙機のニッププレス装置、特に、広幅ニッ
ププレス装置の搾水手段の改良に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a nip press device for a paper machine, and particularly to an improvement in water squeezing means for a wide nip press device.
一般に抄紙機の広幅ニッププレス装置は、プレスロール
と該ロール表面を押圧する加圧シエ・−で構成されるプ
レス部に、湿紙表面に転写マークを残すことなく積載し
て該湿紙中の水分を吸水する柔軟なフェルトと、該フェ
ルトを面加圧しながら受水する高強度のヘルドからなる
搾水手段を通過させる搾水手段を備え、前記湿紙を搾水
するようになっていた。In general, a wide nip press device of a paper machine loads wet paper into a press section consisting of a press roll and a pressurizer that presses the surface of the roll without leaving any transfer marks on the surface of the wet paper. Water is squeezed from the wet paper by providing a water squeezing means that passes through a water squeezing means consisting of a flexible felt that absorbs water and a high-strength heddle that receives water while applying surface pressure to the felt.
しかしながら、上記従来の抄紙機のニップブレス装置は
、その搾水手段を構成する面加圧ヘルドの受水容積が小
さく、搾水性が低いという欠点を有していた。このため
、
■面加圧ヘルドに三重織布以上の厚手の基布を使用し、
受水容積を高める。However, the above-mentioned conventional nip press device for a paper machine has the disadvantage that the water receiving capacity of the surface pressurizing heald constituting the water squeezing means is small, and the water squeezing performance is low. For this reason, ■Use a base fabric thicker than triple-woven fabric for the surface pressure heddle,
Increase water receiving capacity.
０面加圧ベル１へに複数枚の基布を使用し、受水容積を
高める。A plurality of base fabrics are used for the zero-side pressure bell 1 to increase the water receiving capacity.
■両面コート処理を行ったベルトのフェルト側の面に、
マシンの流れ方向に沿った溝を切り、受水した水の流下
を促進する。■On the felt side of the belt, which has been coated on both sides,
Grooves are cut along the flow direction of the machine to facilitate the flow of received water.
■両面コート処理を行ったベルトのフェルト側の面に、
ブラインドドリル（へこみ穴）や突起を設け、受水容積
を高める。■On the felt side of the belt, which has been coated on both sides,
Install blind drills (recessed holes) and protrusions to increase water receiving capacity.
といった対策を施していた。Measures were taken.
ところがこれらの対策は、様々な運用上の問題点を有し
ていた。即ち、
（ｉ）ベルトの両面にコート処理を施すには、工数と費
用がかかる。However, these measures had various operational problems. That is, (i) Coating both sides of the belt requires a lot of man-hours and costs.
（１１）ベルトのフェルト側の面に溝を切るには、ベル
トの目付けを５０００〜８０００ ｇ ／ ｍ ”以上
とする必要があり、コーテイング量が多←重いベルトに
なってしまう。(11) In order to cut grooves on the felt side surface of the belt, it is necessary to set the basis weight of the belt to 5000 to 8000 g/m or more, which results in a heavy belt with a large amount of coating.
（ＩＩＩ）面加圧時に溝が変形しないようベルトの硬度
を上げると、曲げ応力が高くなり、プレスロールに対す
る馴染み性が低下する。(III) If the hardness of the belt is increased so that the grooves are not deformed during surface pressurization, the bending stress will increase and the conformability to the press roll will decrease.
（ＩＶ）硬く重いベルトでは、駆動系に対する負荷が大
きくなってしまう。(IV) A hard and heavy belt increases the load on the drive system.
（Ｖ）面加圧ベルトを厚くすると、その表面（外周）と
裏面（内周）の周長の差でフェルトとベルト間に走行中
のズレが生じ、摩擦によって両者の寿命が低下すること
がある。(V) If the surface pressure belt is made thicker, the difference in circumferential length between the front surface (outer periphery) and the back surface (inner periphery) will cause misalignment between the felt and the belt during running, which may shorten the life of both due to friction. be.
などの問題を避けることができなかった。Such problems could not be avoided.
この発明は上記の点に鑑み、ベルトとして用いる基布に
両面コート処理や溝切り加工を行う必要がなく、しかも
溝付きベルトと同等以上の受水能力を持つ搾水手段を備
えた抄紙機の二ンブブＬ／ス装置を提供することを目的
としている。In view of the above points, this invention eliminates the need for double-sided coating or groove cutting on the base fabric used as a belt, and provides a paper machine equipped with a water squeezing means that has a water receiving capacity equal to or greater than that of a grooved belt. The purpose is to provide a dual bus L/S device.
上記の目的を達成するためこの発明は、湿紙の水分を吸
収するフェルトと、該フェルトの水分を受水するファブ
リツタと、該ファブリックを面加圧するベルトとを、プ
レスロールと圧カシプ、−間に通過させてなる搾水手段
を備え、該搾水手段を構成するファブリックとベルトの
接触面を、互いに噛合できるように製織し、ファブリッ
クによる受水容積の増大を図るとともに、ファブリック
とベルトの凹凸組織面の噛合によって両者のズレが生じ
ないように構成したものである。In order to achieve the above object, the present invention provides a felt that absorbs the moisture of wet paper, a fabricator that receives the moisture of the felt, and a belt that presses the surface of the fabric between a press roll and a pressurizer. The contact surface of the fabric and the belt constituting the water squeezing means are woven so that they can mesh with each other, thereby increasing the water receiving capacity of the fabric and reducing the unevenness of the fabric and the belt. It is constructed so that misalignment between the two does not occur due to the meshing of the tissue surfaces.
以下、この発明を添付の図面に示す一実施例に基づいて
説明する。Hereinafter, the present invention will be described based on an embodiment shown in the accompanying drawings.
第１図は、この発明における抄紙機のニッププレス装置
の全体構成を示す縦断面図、第２図はファブリツタとベ
ルトの組織を示す拡大断面図、第３図はプレスロールと
圧力シューの関係を示す水平断面図である。Fig. 1 is a longitudinal sectional view showing the overall configuration of the nip press device for a paper machine according to the present invention, Fig. 2 is an enlarged sectional view showing the structure of the fabricator and belt, and Fig. 3 shows the relationship between the press roll and the pressure shoe. FIG.
図において、１はこの発明の抄紙機のニッププレス装置
本体で、該本体１は、プレスロール２と該ロール２の表
面を面加圧する圧力シュー３、及びロール２とシュー３
間のプレス部Ｐを通過する搾水手段４とで構成されてい
る。該プレスロール２と加圧シュー３の上面の曲率はほ
ぼ同しで、両者の間隔を調整することで、搾水手段４に
加わる面圧を制御できるようになっている。プレスロー
ル２は搾水手段４を面加圧しながら回転して、該手段４
を摩擦搬送するよう構成されている。これに対し、圧力
シュー３は、搾水手段４に対して静止しているため、該
手段４を構成するベルト５と摺動するようになっている
。In the figure, 1 is a main body of a nip press device for a paper machine according to the present invention, and the main body 1 includes a press roll 2 and a pressure shoe 3 that applies surface pressure to the surface of the roll 2, and a press roll 2 and a pressure shoe 3 that presses the surface of the roll 2.
It consists of a water squeezing means 4 that passes through a press section P between the two. The curvatures of the upper surfaces of the press roll 2 and the pressure shoe 3 are approximately the same, and by adjusting the distance between them, the surface pressure applied to the water squeezing means 4 can be controlled. The press roll 2 rotates while applying surface pressure to the water squeezing means 4.
The structure is configured to frictionally convey. On the other hand, since the pressure shoe 3 is stationary with respect to the water squeezing means 4, it slides on the belt 5 that constitutes the water squeezing means 4.
搾水手段４は湿＜Ｅ Ｓの水分を除去するためのもので
、フェル１−５、ファブリック６、ベルト７をこの順序
で積層したもので構成されている。二のうちフェルト５
は受水容積が大きく、かつ湿紙Ｓの表面を傷つけること
のない柔軟組織のフェルト布からなり、湿紙Ｓをその上
面に積載して、プレスロール２と圧力シュー３間のプレ
ス部Ｐを通過できるようになっている。また該フェルト
５とファブリック６及びヘルド７はいずれもエンドレス
に構成され、搾水後は水分を除去する工程（図示せず）
を通過した後、再びプレス部Ｐに搬入されるようになっ
ている。The water squeezing means 4 is for removing moisture in the case of humidity < ES, and is composed of a felt 1-5, a fabric 6, and a belt 7 laminated in this order. felt 5 out of 2
is made of felt cloth with a flexible structure that has a large water receiving capacity and does not damage the surface of the wet paper paper S, and the wet paper paper S is loaded on the top surface of the felt cloth, and the press part P between the press roll 2 and the pressure shoe 3 is It is possible to pass through. In addition, the felt 5, fabric 6, and heald 7 are all configured to be endless, and after squeezing water, a step (not shown) is performed to remove water.
After passing through, it is carried into the press section P again.
前記ファブリック６は、フェルト５内の水分を受水して
搾水補助するためのもので、受水容積の大きな織布から
なっている。具体的には、目付は一１０００ｇ／ ＴＩ
（程度である。また、フェルト５と接するファブリック
６の上面６ａは、たて糸・よこ糸ともに０．４ｍｍφの
モノフィラメントで製織し、フェルト５内の水分を受水
しやずくしである。ヘルド７と接触する該ファブリック
６の下面６ｂは、大いよこ系と細いよこ糸を交互に一定
間隔で配してプレスローラ３の軸に平行な溝を持つ凹凸
面を構成し、後述のヘルド７の上面７ａと噛合するよう
になっている。即ち、第２図示の実施例では、太いよこ
糸＝０．７ｍｍφ、細いよこ糸＝０．４ｍｍφとし、た
て糸は８０本／寥′、よこ糸は７２本／寥′のモノフィ
ラメントメツシュに製織しである。しかして、該ファブ
リック６の加圧状態での実効ボイドボリュームは４００
ｃｃ／ ％以上で、従来の溝切りロールの２００ｃｃ／
ｒｄに比べて格段に高い脱水性を実現できるようにな
っている。The fabric 6 is for receiving water in the felt 5 to assist in water extraction, and is made of a woven fabric with a large water receiving capacity. Specifically, the basis weight is 11000g/TI
(The upper surface 6a of the fabric 6 in contact with the felt 5 is woven with monofilament having a diameter of 0.4 mm for both warp and weft yarns, and is used to absorb moisture within the felt 5. Contact with the heald 7 The lower surface 6b of the fabric 6 constitutes an uneven surface having grooves parallel to the axis of the press roller 3, with large wefts and thin wefts arranged alternately at regular intervals, and is similar to the upper surface 7a of the heald 7, which will be described later. That is, in the embodiment shown in the second figure, the thick weft yarn = 0.7 mmφ, the thin weft yarn = 0.4 mmφ, the warp yarn is 80 yarns per square foot, and the weft yarn is 72 yarns per square meter. The fabric 6 is woven into a mesh.The effective void volume of the fabric 6 under pressure is 400.
cc/ % or more, 200cc/ of conventional groove cutting roll
It is now possible to achieve much higher dehydration performance than rd.
ヘルド７は、ファブリック６の下面６ｂを支持して圧力
シュー３との接触による１７耗を防止するためのもので
、ファブリック６と接する上面７ａがファブリック６の
下面６ｂと同様な凹凸面からなっており、太いよこ糸と
細いよこ糸を交互に一定間隔で配してなる該上面７ａと
ファブリック６の下面６ａの凹凸面が互いに噛合するよ
う構成されている。また、ベルト７の下面７ｂ（＝圧カ
シュー３側）は、搾水時のシュー３との摩擦力によって
ベルト７が損耗するのを防ぐため、ウレタン樹脂Ｕを含
浸コートして耐摩耗性を強化しである。The heald 7 is for supporting the lower surface 6b of the fabric 6 to prevent wear due to contact with the pressure shoe 3, and has an upper surface 7a in contact with the fabric 6 having an uneven surface similar to the lower surface 6b of the fabric 6. The upper surface 7a, in which thick weft yarns and thin weft yarns are alternately arranged at regular intervals, and the uneven surface of the lower surface 6a of the fabric 6 are configured to mesh with each other. In addition, the lower surface 7b (=pressure cashew 3 side) of the belt 7 is impregnated with urethane resin U to strengthen its wear resistance in order to prevent the belt 7 from being worn out due to the frictional force with the shoe 3 during water squeezing. It is.
ここでベルト７は、目付け一３５００ｇ／ ｍ程度であ
り、従来の溝付きヘルｌ−（５０００〜８０００ｇ／
ｒｒＯより大幅に軽くなっている。ベルト７に用いる繊
維は、耐摩耗性に優れた合成繊維が望ましく、例えばポ
リアミド系フィラメントやポリエステル系繊維を適宜使
用するのが好ましい。Here, the belt 7 has a basis weight of about 3,500 g/m, and is similar to the conventional grooved belt (5,000 to 8,000 g/m).
It is significantly lighter than rrO. The fibers used for the belt 7 are preferably synthetic fibers with excellent abrasion resistance, and for example, polyamide filaments or polyester fibers are preferably used as appropriate.
尚、ファブリック６の下面６ｂとベルト７の上面７ａの
凹凸面は、上記のように径の異なるよこ糸を一定間隔で
配して構成してもよいし、同じ径のよこ糸であっても、
よこ二重の組織で製織することを一定間隔で繰り返して
構成してもよい。The uneven surfaces of the lower surface 6b of the fabric 6 and the upper surface 7a of the belt 7 may be formed by distributing weft yarns with different diameters at regular intervals as described above, or even if the weft yarns have the same diameter.
It may also be constructed by repeating weaving with a horizontal double weave at regular intervals.
しかして、湿紙Ｓを上面に積載したフェルト５、ファブ
リック６、ベルト７をこの順序で積層した搾水手段４は
、プレスロール２と圧力シュー３間のプレス部Ｐに膠送
され、面加圧される。この時、ファブリック６とベルト
７はプレスロール２の回転力によって搬送されるが、フ
ァブリック６の下面６ａとヘルド７の上面７ａの凹凸製
織面は噛合しているため、互いにズレることなく搬送さ
れる。The water squeezing means 4, which has the felt 5, the fabric 6, and the belt 7 laminated in this order with the wet paper S loaded on the upper surface, is fed to the press section P between the press roll 2 and the pressure shoe 3, and the surface be pressured. At this time, the fabric 6 and the belt 7 are conveyed by the rotational force of the press roll 2, but since the uneven weaving surfaces of the lower surface 6a of the fabric 6 and the upper surface 7a of the heald 7 are engaged with each other, the fabric 6 and the belt 7 are conveyed without shifting from each other. .
従って、フェルト５の水分はファブリック６に良く吸収
され、圧力シュー３に対する摩耗はベルト７によってガ
ードされ、しかもファブリック６とベルト７のズレによ
る損耗は、はとんど発生することがない。また、ファブ
リック６の下面６ｂとヘルド７の上面７ａの凹凸面は、
ファブリック６内の水分の流下を促進する溝としても作
用することとなる。しかもベルト７は、軽量かつ低硬度
に構成されているから、プレスロール２のｆｔ７Ｗは従
来装置に比べ大幅に低減し、ガイド性に優れている。こ
のため、搾水性が良く、しかも高寿命の搾水処理が実現
される。Therefore, moisture in the felt 5 is well absorbed by the fabric 6, wear on the pressure shoe 3 is protected by the belt 7, and wear due to misalignment between the fabric 6 and the belt 7 rarely occurs. Moreover, the uneven surfaces of the lower surface 6b of the fabric 6 and the upper surface 7a of the heald 7 are
It also acts as a groove that promotes the flow of moisture within the fabric 6. Moreover, since the belt 7 is constructed to be lightweight and have low hardness, the ft7W of the press roll 2 is significantly reduced compared to the conventional device, and has excellent guiding performance. Therefore, a water squeezing process with good water squeezing performance and a long life can be realized.
上記のようにこの発明は、湿紙の水分を吸収するフェル
トと、該フェルトの水分を受水するファブリックと、該
ファブリツタを面加圧するベルトとを、プレスロールと
圧力シュー間に通過させてなる搾水手段をＯｆ！え、該
搾水手段を構成するファブリックとヘルドの接触面を、
互いに噛合できるように製織したことを特徴としている
ので、ファブリックによる受水能力の向上を実現しなが
ら、ファブリックとベルト間のズレによる損耗は極小に
することができる。また、ファブリツタとベルトの噛合
面は、水分流下を促進する溝としての機能も有する。し
かもベルトは、軽く、低硬度に構成できるから搾水手段
としてのガイド性も良好である。As described above, the present invention is made by passing a felt that absorbs water from wet paper, a fabric that receives water from the felt, and a belt that presses the surface of the fabric between a press roll and a pressure shoe. Turn off the water extraction method! E, the contact surface between the fabric and the heald constituting the water squeezing means,
Since the fabric is woven so that they can interlock with each other, it is possible to improve the fabric's ability to absorb water while minimizing wear and tear caused by misalignment between the fabric and the belt. Furthermore, the engaging surface between the fabricator and the belt also functions as a groove that promotes the flow of water. Moreover, since the belt can be constructed to be light and have low hardness, it has good guiding performance as a water squeezing means.
この結果、抄紙機のニッププレス装置の生産性向上に多
大な効果を奏するものである。As a result, the productivity of the nip press device of a paper machine is greatly improved.
第１図は、この発明における抄紙機のニッププレス装置
の全体構成を示す縦断面図、第２図はファブリツタとベ
ルトの組織を示す拡大断面図、第３図はプレスロールと
圧力シューの関係を示す水平断面図である。
ニッププレス装置本体
一ブレスロール
一圧カシュー
搾水手段
・フェルト
ファブリック
６ａ−・ファブリツタ上面
６ｂ・−・ファブリツタ下面
７−・ベルト
７ａ・−・ベルト上面
７ｂ−ベルト下面
Ｓ〜湿湿
紙−プレス部
Ｕ−・・ウレタン樹脂Fig. 1 is a longitudinal sectional view showing the overall configuration of the nip press device for a paper machine according to the present invention, Fig. 2 is an enlarged sectional view showing the structure of the fabricator and belt, and Fig. 3 shows the relationship between the press roll and the pressure shoe. FIG. Nip press main body, breath roll, cashew squeezing means, felt fabric 6a, upper surface of fabric 6b, lower surface of fabric 7, belt 7a, upper surface of belt 7b, lower surface of belt S, wet paper, press section U -...Urethane resin
Claims (1)
受水するファブックと、該ファブリックを面加圧するベ
ルトとを、プレスロールと圧力シュー間に通過させてな
る搾水手段を備え、該搾水手段を構成するファブリック
とベルトの接触面を、互いに噛合できるように製織した
ことを特徴とする抄紙機のニッププレス装置。A water squeezing means is provided by passing a felt that absorbs water from wet paper, a fabric that receives water from the felt, and a belt that presses the surface of the fabric between a press roll and a pressure shoe. A nip press device for a paper machine, characterized in that the contact surfaces of a fabric and a belt constituting a water squeezing means are woven so that they can mesh with each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63247061A JP2732088B2 (en) | 1988-09-30 | 1988-09-30 | Nip press equipment for paper machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63247061A JP2732088B2 (en) | 1988-09-30 | 1988-09-30 | Nip press equipment for paper machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0299683A true JPH0299683A (en) | 1990-04-11 |
| JP2732088B2 JP2732088B2 (en) | 1998-03-25 |
Family
ID=17157839
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63247061A Expired - Lifetime JP2732088B2 (en) | 1988-09-30 | 1988-09-30 | Nip press equipment for paper machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2732088B2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59100788A (en) * | 1982-12-02 | 1984-06-11 | アルバニ−・インタナシヨナル・コ−ポレ−シヨン | Dehydration press |
-
1988
- 1988-09-30 JP JP63247061A patent/JP2732088B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59100788A (en) * | 1982-12-02 | 1984-06-11 | アルバニ−・インタナシヨナル・コ−ポレ−シヨン | Dehydration press |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2732088B2 (en) | 1998-03-25 |
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