13.4 压榨配置方式及复式压榨在线视频

大家好
Hello everyone

这节课我们介绍第四节
In this lesson, we will introduce

压榨配置方式及复式压榨
the press configuration and composite press in section 4

在造纸企业
In paper-making enterprises

当新设计一台造纸机
when designing a new paper machinery

或改造现有的造纸机时
or reforming an existing paper machinery

都会遇到对造纸机的
they will encounter the problem of

压榨部进行配置的问题
the configuration of the press part of the paper machinery

这其中包括对压榨部的方案设计
which includes the scheme design of the press part

主要是选择压榨部的引纸方式
mainly the selection of the lick-up method of the press part

压榨道数及各道压榨的形式等内容
the number of press and the form of each press, etc.

首先说一下
First of all, let’s talk about the

压榨部配置的原则
principle of the press part configuration

压榨部的配置主要取决于
The configuration of the press mainly depends on three factors

纸张种类与质量
the type and quality of the paper

浆料种类与配比
the type and furnish of the pulp

车速的三大因素
and the speed of the machine

考虑压榨部的配置时
When considering the configuration of the press part

可从它的作用与任务出发
we can start from its function and task

结合一般的技术和经济上的要求综合考虑
combine with the general technical and economic requirements

也有一些原则可供参考
there are also some principles for reference

其次，要进行压榨型式、压榨道数的选定
Next, it is necessary to select the press type and number of press

一般来说，压榨的型式和道数
In general, the press type and the number of press are decided

是按照纸的原料配比所决定的
according to the dewatering characteristics and some quality requirements

脱水特性和纸的某些质量要求
of the paper determined by the raw material ratio of the paper

并参考已有造纸机的压榨部配置情况
and referring to the press part configuration of the existing paper machinery

或中间试验的结果来选定的
or the results of the intermediate test

最后，进行压榨配置时还需要
Finally, the lick-up mode and the lick-up device need to

就引纸方式及引纸装置进行选择
be selected when the press configuration is carried out

把纸幅从成形网移送到压榨部的
The type selection of the transfer device for transferring

移送装置的型式选择
the web from the forming net to the pressing part

与纸幅的定量及车速有关
is related to the basis weight and speed of the web

生产湿强度较高的纸种的低速长网造纸机
For the low-speed fourdrinier with high wet strength

可选用普通的开式牵引纸
the common open lick-up can be selected

以简化结构和减少运行及维护费用
to simplify the structure and reduce the cost of operation and maintenance

圆网造纸机、纸板机
Cylinder paper machinery, paperboard machine

生产低定量薄页纸的低速纸机等
low-speed paper machinery for producing low-quantity tissue, etc.

一般都采用传统的舔移方式
all adopt the traditional stick lick-up

对于新设计的长网造纸机
For the newly designed fourdrinier

当车速超过200米/分时
when the speed exceeds 200 meters/min

一般都配有真空吸移引纸装置
the vacuum suction lick-up device is usually adopted

对于生产低定量纸种的造纸机
For paper machinery which produces light weight paper

如长网卫生纸机
such as fourdrinier toilet paper machinery

则可以采用结构简单紧凑的吸移箱
a simple and compact suction box can be used

在反压榨和平滑压榨上
In the reverse press and smooth press

往往需要配用引纸绳装置
lick-up rope device is often adopted

以上就是纸机压榨部配置时
The above are what need to be considered

需要考虑的内容
when the press part of the paper machinery is configured

下面介绍一下复式压榨
Here is the introduction of the composite press

复式压榨也称复合压榨或多辊压榨
which is also called compound press or multi-roll press

实际上它是把多道双毯压榨
In fact, it is a combination of multi double-felt press

正压榨和反压榨组合在一起
positive press and reverse press

复式压榨具有多种形式
There are many forms of composite press

下面我们就其中的几种做一介绍
Let's introduce some of them

首先介绍带真空吸移辊的复式压榨
First, the composite press with vacuum suction roll is introduced

这种压榨一般分为几种形式
This kind of press is divided into several forms

用“0”代表不带毛毯的压辊
with "0" to represent the press roll without felt

用“6”代表毛毯向上布置的压辊
"6" to represent the press roll with felt arranged upwards

用“9”代表毛毯向下布置的压辊
and "9" to represent the press roll with felt arranged downwards

比如：60型复式压榨只有一个压区
For example: 60 type composite press has only one press area

适用薄纸和易于剥离的纸张
which is suitable for tissue and paper easy to peel

而69型有一个双毛布压区
While 69 type has a double wool cloth press area

适用于生产纸板
which is suitable for the production of cardboard

再来看这种，606型
Then look at the type 606

中间辊是花岗石辊
the middle roll is granite roll

第三压辊可以是真空压辊或沟纹压辊
the third roll can be vacuum roll or groove roll

一般适用于文化用纸
which is generally suitable for cultural paper

69型只有一个双毛毯压区Type 69 has only a double felt press area

690型是在69型的基础上增加一个石辊而成
type 690 is made by adding a stone roll on the basis of type 69 type

这两种形式适用于生产纸板和浆板
these two forms are suitable for the production of cardboard and pulp board

这张图片就是带真空吸移辊的复式压榨实物图
This picture is a composite press with a vacuum suction roll

接下来，我们看一下多辊复式压榨
Next, let's take a look at the multi-roll composite press

早在20世纪30年代就曾使用过
As early as the 1930s

水平排列的三辊复式压榨
three-roll composite press with horizontal arrangement was used

后来，在50年代初采用过
Later, in the early 50's

直立式、三角式、堆垒式等三辊压榨
the vertical, triangular, stacking and other three-roll presses were used

但这几种复式压榨一般
but these composite presses are only

都只是用在旧纸机的改造中
used in the old paper machinery transformation

它可以缩短压榨部占地的总长度
it can shorten the total length of the press part

从而有可能增设烘缸
so it is possible to add drying cylinder

并提高纸机生产能力
and improve the paper machinery production capacity

应用较广的是折角式复合压榨
The folding angle compound press is most widely used

在一般文化用纸和瓦楞原纸的
in paper machinery for general cultural paper

造纸机上应用比较广范
and corrugated raw board

真空压辊为复式压榨的中心辊
The vacuum press roll is the center roll of the composite press

其位置固定不动
and its position is fixed

沟纹辊和石辊配有
The groove roll and the stone roll are equipped

加压和提升装置
with pressurizing and lifting device

一般真空压辊和
Generally, the vacuum press roll and

沟纹辊配有传动
the groove roll are equipped with transmission

当车速较高时
when the speed is high

石辊也可以配合传动
the stone roll can also cooperate with the transmission

图中所示的是折角式三辊复合压榨
Pictured here is an angle-folding 3-roll compound press

第一压区的下辊为沟纹辊
The lower roll in the first press area is a groove roll

中间辊为真空辊
the middle roll is a vacuum roll

第二压区上辊为石辊
the upper roll in the second press area is a stone roll

三辊呈折角式排列
and these three rolls are in an angle arrangement

这种三辊两压区复式压榨的特点是
This kind of three-roll twin press is characterized by

纸页两面差小
the small difference between the two sides of the sheet

结构简单、布置灵活
simple structure and flexible arrangement

但是纸页孔隙较重
but the sheet is more porous

为了纸页两面得到均匀的脱水
In order to obtain uniform dehydration on both sides of the paper

使两面的平滑度接近一致
and make the smoothness of both sides close to the same

一般在三辊两压区复式压榨之后
a positive press is usually set

再设置一道正压榨
after the three-roll twin press

三辊式复式压榨仅有两个压区
3-roll composite press with only two press areas

常常是不够的
is often not enough

在某些造纸机的压榨部上
On the press part of some paper machinery

使用四辊三压区复式压榨
the composite press with four rolls and three press areas is adopted

有利于操作和管理
which is beneficial to operation and management

并为压榨部的封闭式
and creates conditions for the closed

或半封闭式引纸创造条件
or semi-closed lick-up of the press part

如图所示，是一种
As shown in the figure, it is a kind of

四辊三压复式压榨
composite press with four rolls and three press areas

第一压区下面是沟纹辊
the lower roll in the first press area is the groove roll

上辊是真空辊
the upper roll is the vacuum roll

第二压区右辊是石辊
the right roll in second press area is the stone roll

第三压区右辊是可控中高沟纹辊
the right roll in third press area is the controllable crown groove roll

湿纸幅经过三个压区脱水
The wet web is dehydrated through three pressing areas

提高到较高的干度
which improves the dryness to a higher level

开放式引纸进入平滑压榨
and enters into smooth press by open lick-up

减少了断头
which reduces the web break

为了解决四辊三压区复式压榨
In order to solve the problem of hole mark on sheet

纸页孔印问题
of composite press with four rolls and three press areas

又开发了五辊三压区复式压榨
the composite press with five rolls and three press areas was developed

与四辊两压区类似
Similar to the composite press with four rolls and three press areas

它也是在一压和二压压区
it is also a structure of independent roll without lick-up

使用独立压辊的无牵引纸的结构
in the first and second press areas

四辊以上的复式压榨采用环列式布置
The composite press with more than four rolls adopts the circular arrangement

中心辊是石辊
the center roll is a stone roll

围绕石辊布置多个真空压辊
and a plurality of vacuum press rolls or controllable crown groove rolls

或可控中高沟纹辊
are arranged around the stone roll

该复式压榨实现了全封闭引纸
The composite press realizes completely closed lick-up

没有开放式引纸
without open lick-up

减少了断头
which reduces web break

以上就是复式压榨的有关内容
The above is the relevant content of the composite press

这节课我们就讲到这里
That’s all about this lesson

谢谢大家
Thank you all