这些装备技术，代表中国纸机关键部件水平（上）-转自浆纸技术

近年来，围绕高速、宽幅、节能、紧凑和自动化等方面，中国国产造纸机及其配套的关键部件取得明显技术进步。中国制造的纸机、纸板机整机性能水平，将在下一期论述。本期主要阐述与造纸机配套的关键部件。

In recent years, China’s homebred paper machines and key supporting components have achieved great progress in operation speed, wire width, energy saving, compactness and automation. The overall operation performance of China homebred paper machine will be discussed in the next issue. In this issue, the key supporting components of paper machines will be clarified below.

1、稀释水流浆箱

现代高速纸机大多采用稀释水局部调浓方法来控制纸张横幅定量的偏差，该方法具有调节精度高、调节能力强等优点，并且还能保持唇板不会变形。华章科技（原杭州美辰）、河南大指等在气垫式流浆箱的基础上，开发了具有自主知识产权的稀释水水力式流浆箱。

河南大指研发的稀释水流浆箱（见图1），应用在江河纸业PM6 5600/1500的水平夹网纸机上，主要参数：上浆量1423L/s，设计上网浓度0.9%～1.5 %，唇口宽度6180mm，上唇板微调器个数61个，上唇板微调器距离102mm，稀释白水控制阀间距60mm，稀释水量为总进浆量的7%～12%。

1. Headbox with dilution water

Nowadays, the deviation of profile basis weight is usually controlled by means of regulating the consistency with dilution water on modern highspeed paper machines. This regulating method is featured with high precision and efficiency, and the ability to keep the slice from deformation. Based on the existing air-cushion headbox technology, Zhejiang Huazhang Technology (formerly Hangzhou Meichen) and Henan Dazhi Paper Machinery have developed the dilution water hydraulic headbox with independent intellectual property.

The dilution water headbox (Figure 1) developed by Henan Dazhi Machinery has been applied to PM6 5600/1500 horizontal twin-wire forming paper machine in Henan Jianghe Paper Co., Ltd. Specifications: slurry volume 1423L/s; designed slurry consistency 0.9%-1.5%; slice width: 6180mm; upper slice trimmers: 61 sets; distance between upper slice trimmers: 102mm; distance between dilution white water valves: 60mm; the max. diluting water volume: 7%-12% on total slurry volume.

图1  河南大指研发的稀释水流浆箱

2、夹网成形

与传统成形器相比，夹网成形优点明显：两面脱水成形，改善纸页的两面差，提高脱水效率、成形质量、纸机生产能力；成形区短、封闭，适应高车速；结构紧凑，占用空间小。

江河纸业PM6 5600/1500纸机上配套使用河南大指公司开发的水平夹网成形器（如图2），实现了压力脱水、脉冲脱水、离心脱水和真空脱水等多种脱水方式。在浆料着网点及喷射角调节机构、弹性加压脱水靴、弧形脱水箱的研发以及气流干扰消减器和白水收集装置具有创新性。各脱水元件最大真空度：脱水板箱-5kPa，倒挂吸水箱-7.6/-10/-20kPa，高真空箱-20/-33/-65/-65kPa，真空伏辊-45/-65kPa。

2. Twin-wire former

The twin-wire former has a better performance compared with that of the traditional one. It could realize sheet dewatering from both sides to improve the sheet two-sideness, raise dewatering efficiency, forming quality, as well as the productive capacity. Moreover, short and closed forming area makes it more adapted to high-speed operation. And a more compact internal structure of the former helps to lower its space requirement.

The twin-wire former (Figure 2) developed by Dazhi Machinery has been installed on PM6 5600/1500 paper machine in Henan Jianghe Paper Co., Ltd. It realized various dehydration methods, such as pressurized dehydration, pulse dehydration, centrifugal dehydration and vacuum dehydration. The innovative progress has been made in the regulating device for slurry jet location and jet angle, elastic pressurized dehydration shoe, arcshaped dehydration tank and air-flow interference reducer, as well as white water collectors. Maximum vacuum degree of various dehydration devices is as follow: dehydration tank: -5kPa; upside-down suction box: -7.6/-10/-20kPa; highvacuum box: -20/-33/-65/-65kPa; vacumm couch roll: -45/-65kPa.

图2  江河纸业水平夹网成形器运行现场

3、靴式压榨

由于靴式压榨具有出压榨纸幅干度高、运行效率好、产品质量改善等优点，是纸机节能降耗的主要手段之一，因而在不久的将来，将全面取代传统的辊式压榨，成为高速/中高速宽幅造纸机的标准配置（500～1500m/min）。

山东昌华研制生产的靴式压榨新产品，如图3。创新点体现在：（1）靴板和靴套之间形成4个区域，即静压区、动压区、卸油区、油位保持区，能够形成良好的润滑和压力分布区间。（2）可补偿性的骨架式油封和耐磨套筒相配合的密封形式，密封使用寿命长，密封效果佳。(3)为适应高线压交变应力的工况，开发了一种新型的辊体锻造技术。该创新成果已应用于企业生产实践。

3. Shoe press

Shoe press technology is featured by high webdryness, good operating efficiency and improved product quality, making it one of the major effective solutions for energy conservation of paper machine. It’s predicted that in the near future, traditional roller press will be completely replaced by shoe press that is more adapted to the medium and high-speed paper machines (500-1500m/min).

The newly developed shoe press (Figure 3) by Shandong Changhua Machiner y is of g reat innovation. Firstly, there are four functional areas (static pressure nip, dynamic pressure nip, oil discharging area, and oil level holding area) between shoe plate and blanket, which could strengthen the lubrication and form a proper pressure distribution. Secondly, the sealing device that matches frame type oil seal with wear-resistant sleeves prolongs the lifetime and brings about good sealing effect. Thirdly, roll shell forging technology was applied to accommodate with the alternating stress resulted from high linear pressure. The innovative achievement for shoe press facility has been applied in practical production.

山东昌华靴式压榨新产品