14.2.1 烘缸、烘毯缸和冷缸（上）慕课视频播放-制浆造纸机械与设备-MOOC慕课视频教程-柠檬大学

同学们好
Hello everyone

今天要讲的内容是
What we’re going to talk about today is

烘缸、烘毯缸和冷缸
the dry cylinder, the blanket dry cylinder and the cold cylinder

烘缸按材质分为
The dry cylinder is divided into ordinary cast iron dry cylinder

普通铸铁烘缸和钢制烘缸
and steel dry cylinder according to the material

主要由缸体
It is mainly composed of cylinder body

缸体盖（也即端盖）
cylinder body cap (i. e. end cap)

蒸汽接头、轴承
steam joint, bearing

冷凝水排除装置等零部件组成
condensate water removal device and other parts

铸铁烘缸的烘缸体
The dry cylinder body of the cast iron dry cylinder

是用HT250或HT350铸铁
is a hollow cylinder made of

浇铸制成的空心圆筒
HT250 or HT350 cast iron

筒体内外表面
The inner and outer surface of the cylinder body

都要进行加工
should be processed so as to

使壁厚一致
make the wall thickness consistent

保证传热均匀
and ensure uniform heat transfer

另外，外表面还需要
In addition, the external surface

进行磨光处理
also needs to be polished

以保证纸张与缸壁接触后
to ensure that the paper contact with the cylinder wall

获得一定的平滑度
to obtain a fixed smoothness

并有利于提高干燥效率
and to improve the drying efficiency

烘缸筒体两端配有端盖
The two ends of the cylinder body are provided with an end cap

端盖连同空心轴头一起铸成
which is cast together with a hollow shaft head

端盖用螺栓紧固在
The end cap is bolted to both ends

烘缸筒体的两端
of the dry cylinder body

为保证严格的密封
In order to ensure strict sealing

筒体和端盖的
the cylinder body and the end cap

接触密封面上
are machined with filler sealing line

加工有填料密封线
on the contact sealing surface

装配时需垫
and asbestos plate or asbestos rope

石棉板或石棉绳
shall be padded in the assembly

在工作侧的端盖上开有人孔
A manhole is opened on the end cap of the working side

传动侧装有传动齿轮
the drive side is provided with a transmission gear

轴端装有进汽头
and the shaft end is provided with a steam inlet

烘缸的直径有φ800、φ1000
The diameter of the dry cylinder has many specifications

φ1250、φ1500、φ1800mm等多种规格
, such as φ800, φ1000, φ1250, φ1500, φ1800mm and so on

目前大多数长网造纸机
At present, the diameter of the dry cylinder

所用的烘缸直径为φ1500
used in most fourdrinier is φ1500

加热时
When heated

一般通入0.3~0.5MPa的低压蒸汽
a low-pressure steam of 0.3~0.5 MPa is generally passed through

对于薄页纸生产
For thin sheet paper production

一般采用直径为2~6m的大直径烘缸
a dry cylinder of large diameter of 2~6 m is generally adopted

大直径烘缸对干燥能力要求高
The large diameter dry cylinder requires high drying capacity

蒸汽量是常规烘缸的14~19倍
the steam quantity is 14~19 times that of the conventional dry cylinder

因而需要采用0.5~1.2MPa的高压蒸汽
so the high pressure steam of 0.5~1.2 MPa is needed

其缸体壁厚达到50~60mm
the wall thickness of the cylinder body is 50~60 mm

材质要采用比HT350
and the material is made of alloy gray cast iron

强度更高的合金灰铸铁
or vermicular graphite cast iron/spheroidal-graphite cast iron

或是蠕墨铸铁/球磨铸铁
with higher strength than HT350

端盖为内球体或其他曲面结构
The end cap is an inner sphere body or other curved structure

厚度由外圈向内圈逐渐增大
the thickness increases gradually from the outer ring to the inner ring

两段端盖中心要配置内拉管
and the center of the two end caps is provided with an inner tube

为了增加烘缸的传热面积
In order to increase the heat transfer area

降低热阻
and reduce th e heat resistance of the dry cylinder

可在烘缸内表面
the spiral teeth can be arranged evenly

均匀布置螺旋齿
on the inner surface of the dry cylinder

两段开回水环形槽
Backwater circular groove is opened in two sections

各间隔齿槽底面分别向两端倾斜
each spacing alveolar under-surface tips to two ends

采用这种结构
With this structure

烘缸传热面积可增加1倍
the heat transfer area of the dry cylinder can be increased by time

而且凝结水被及时甩出
and the condensate water is thrown out in a timely manner

蒸气与缸壁对流传热快
and the heat transfer between the steam and the cylinder wall is fast

热能利用率高
and the utilization rate of heat energy is high

这种烘缸加工也较为方便
This kind of dry cylinder processing is also more convenient

钢制烘缸一般采用
Steel dry cylinder is generally

优质碳素结构钢焊接制造
welded with high-quality carbon structural steel

壁厚减小
the wall thickness is reduced

整体重量减轻
the overall weight is reduced

制造成本降低
and the manufact uring cost is reduced

钢制烘缸筒体的纵向焊缝
The longitudinal weld of steel dry cylinder body

采用双面对接焊
adopts double-sided butt welding

并进行局部射线无损探伤
and carries out local ray non-destructive inspection

筒体与端盖焊接后
after welding the cylinder body and the end cap

也有进行无损探伤
there are also non-destructive inspection

不得有裂缝、未焊透等缺陷
no cracks, no weld penetration and other defects

钢制缸面硬度低于铸铁烘缸
The hardness of steel cylinder is lower than that of cast iron

耐磨性也较差
and the wear resistance is worse

由于碳钢晶粒致密
Because of the compact grain of carbon steel

纸幅不易剥离
the paper web is not easy to be peeled off

加工表面遇水也易生锈
and the surface is easy to rust when water is applied

但随着金属表面处理技术的提高
But with the improvement of metal surface treatment technology

这些问题都已经解决
these problems have been solved

烘毯缸，顾名思义
The blanket dry cylinder, as the name suggests

就是烘毛毯的烘缸
is the dry cylinder for drying blanket

其作用是排除干毯中的水分
whose function is to remove moisture from the dry blanket

提高干毯温度
raise the temperature of the dry blanket

提高干燥效率
and improve the drying efficiency

烘毯效率好的话
If the efficiency of drying blanket is good

可以使干燥部生产能力
the production capacity of drying part

提高10%以上
can be increased by more than 10%

普通烘毯缸在结构上
The structure of the ordinary blanket dry cylinder

与烘缸基本相同
is basically the same as that of the dry cylinder

由于烘毯缸靠干毯带动
Because the blanket dry cylinder is driven by the dry blanket

故传动侧轴头不需装齿轮
the drive side shaft head does not need to be equipped with gears

为了更好地利用
In order to make better use of

毯缸的传热面积
the heat transfer area of the blanket dry cylinder

干毯在其缸面上的
the covering angle of the dry blanket

包角达300°～320°
on the cylinder surface is 300°~320°

热风烘毯缸直径1000～1500mm
The diameter of hot air blanket dry cylinder is 1000~1500mm

缸壁上钻有多个
There are more than 20~25mm holes

20～25mm的孔眼
drilled on the wall of the cylinder

缸体内装有送风室
The air supply chamber is installed in the cylinder body

以2～5 kPa压力
The hot air is fed into the

向送风室通入热风
air supply chamber at 2~5kPa pressure

热风通过孔眼穿透干毯进行干燥
The hot air penetrates the blanket through the hole for drying

烘毯辊替代
The blanket dry roller instead of

传统烘缸之间的导毯辊
the guiding blanket roller between the traditional dry cylinder

一机两用
is one machine for dual-use

同时，烘毯辊还具有
At the same time, the drying blanket roller also has

使烘缸间的“袋区”
the function of ventilating

得到通风的作用
the “bag area” between the dry cylinder

烘毯辊辊体上焊有
The roller body of the drying blanket roller is

纵向的平行筋条
welded with longitudinal parallel rib

筋条之间形成很多小室
and many small chambers are formed between the ribs

热风从两端
The hot air enters the small chambers

不转动的进风分配头
from the non-rotating inlet

进入这些小室
distribution head at both ends

然后通过包绕着
and then escapes through the dry blanket

小室的干毯逸出
wrapped around the small chambers

干毯温度较低的一面
The side of the dry blanket with lower temperature

(即不和纸幅接触的一面)
(i.e. one side not in contact with the paper web)

与该辊接触
contacts the roller

被烘毯辊内吹出的
and is dried by the hot air of 90~100 ℃

温度90～100℃的热风干燥
which is blown out of the drying blanket roller

冷缸在结构和外形
The cold cylinder is basically the same

和烘缸基本相同
in structure and shape as the dry cylinder

只是缸内通入冷水
only the cylinder is filled with cold water

水管从传动侧插入
the water pipe is inserted from the drive side

一直通到操作侧
goes through to the operation side

管上均匀分布喷嘴
The nozzle is uniformly distributed on the pipe

水由喷嘴进入冷缸
and the water enters the cold cylinder from the nozzle

冷缸的主要作用有3点
The three main functions of the cold cylinder are as follows

（1）降低纸页的温度
(1) Reduce the temperature of the paper sheet

（85～90 C°→ 50～55 C°）
(85~90C°→ 50~55C°)

（2）使纸页湿度增加1.5～2.5％
(2) Increase the humidity of paper sheet by 1.5~2.5%

提高压光效果
improve the effect of calendering

（3）减少压光时产生的静电
(3) Reducing static electricity produced by calendering

根据排水方式
According to the drainage method

冷缸分为
the cold cylinder can be divided into

戽斗式排水冷缸
scoop-type drainage cold cylinder

自重式排水冷缸
self-weight drainage cold cylinder

和虹吸管式排水冷缸
and siphon drainage cold cylinder

图中所示为戽斗式排水冷缸
The scoop-type drainage cold cylinder is as shown in the picture

今天的课就讲到这里
So much for this lesson

谢谢
thank you

制浆造纸机械与设备课程列表：

第一章备料机械与设备

-1.1 备料概述

-1.2 木材备料机械与设备

-1.3 非木片筛及木材备料辅助设备

--讨论

--1.3.2 筛选除尘设备及湿法备料设备

-第一章测试备料机械与设备

--第一章测试备料机械与设备

第二章化学制浆机械与设备

-2.1 化学制浆概述

--2.1 化学制浆概述

--讨论

-2.2 间接式蒸煮设备

-2.3 连续式蒸煮设备

--2.3.3 塔式连蒸设备结构与辅助设备

-第二章测试化学制浆机械与设备

--第二章测试化学制浆机械与设备

第三章高得率制浆机械与设备

-3.1 概述及磨石磨木机

-3.2 盘式磨浆机

--讨论

-3.3 搓丝机

--3.3 搓丝机

-3.4 高得率制浆的附属设备及发展

--3.4 高得率制浆的附属设备及发展

-第三章测试高得率制浆机械与设备

--第三章测试高得率制浆机械与设备

第四章洗涤浓缩机械与设备

-4.1 概述

--4.1 概述

-4.2 洗涤与浓缩设备

--4.2 洗涤与浓缩设备

-第四章测试洗涤浓缩机械与设备

--第四章测试洗涤浓缩机械与设备

第五章筛选净化机械与设备

-5.1 概述

--5.1 概述

-5.2 筛选设备

--5.2 筛选设备

-5.3 净化设备

--5.3 净化设备

-第五章测试筛选净化机械与设备

--第五章测试筛选净化机械与设备

第六章废纸制浆及脱墨机械与设备

-6.1 概述

--6.1 概述

-6.2 碎浆机

--6.2 碎浆机

-6.3 浮选槽

--6.3 浮选槽

--讨论

-6.4 热分散机

--6.4 热分散机

-6.5 废纸造纸废水处理设备

--6.5 废纸造纸废水处理设备

-6.6 废纸制浆流程设计及生产线

--6.6 废纸制浆流程设计及生产线

-第六章测试废纸制浆及脱墨机械与设备

--第六章测试废纸制浆及脱墨机械与设备

--讨论

第七章漂白机械与设备

-7.1 纸浆清洁漂白常用流程

--7.1 纸浆清洁漂白常用流程

-7.2 中浓浆泵、中浓混合器及高浓混合器

--7.2 中浓浆泵、中浓混合器及高浓混合器

-7.3 中浓纸浆氧脱木素塔、二氧化氯漂白塔、过氧化氢漂白塔及碱处理塔

--7.3 中浓纸浆氧脱木素塔、二氧化氯漂白塔、过氧化氢漂白塔及碱处理塔

--讨论

-第七章测试漂白机械与设备

--第七章测试漂白机械与设备

第八章纸浆输送及贮存机械与设备

-8.1 纸浆在输送管道中的压头损失及浆泵扬程

--8.1 纸浆在输送管道中的压头损失及浆泵扬程

--讨论

-8.2 纸浆输送机械

--8.2 纸浆输送机械

--讨论

-8.3 纸浆贮存设备

--8.3 纸浆贮存设备

-第八章测试纸浆输送及贮存机械与设备

--第八章测试纸浆输送及贮存机械与设备

第九章打浆及疏解机械与设备

-9.1 打浆设备概述

-9.2 打浆机和圆柱形磨浆机

-9.3 锥形磨浆机

-9.4 盘磨机

-9.5 中、高浓盘磨机及疏解设备

-第九章测试打浆及疏解机械与设备

--第九章测试打浆及疏解机械与设备

第十章造纸机概述

-10.1 造纸机的发展、组成与分类

-10.2 造纸机的规格及长网机的配置

-10.3 造纸机的专用名词术语

-第十章测试造纸机概述

--第十章测试造纸机概述

第十一章纸浆流送设备与流浆箱

-11.1 纸浆流送系统

--11.1 纸浆流送系统

--讨论

-11.2 纸浆流送系统的相关操作单元及设备

--11.2 纸浆流送系统的相关操作单元及设备

-11.3 流浆箱的概述

-11.4 流浆箱的布浆器

-11.5 堰池、匀整装置和上浆装置

-11.6 稀释型水力式流浆箱

-第十一章测试纸浆流送设备与流浆箱

--第十一章测试纸浆流送设备与流浆箱

第十二章造纸机成形装置

-12.1 概述

--12.1 概述

-12.2 长网成形装置

--12.2.1 长网成形装置（上）

--12.2.2 长网成形装置（下）

--讨论

-12.3 圆网成形装置

--12.3 圆网成形装置

-12.4 夹网成形装置

--12.4 夹网成形装置

-12.5 复合型成形器、叠网成形器及网部的辅助装置

--12.5 复合型成形器、叠网成形器及网部的辅助装置

-第十二章测试造纸机成形装置

--第十二章测试造纸机成形装置

第十三章造纸机压榨装置

-13.1 概述

-13.2 双辊压榨

-13.3 压榨部的引纸装置

-13.4 压榨配置方式及复式压榨

--讨论

-第十三章测试造纸机压榨装置

--第十三章测试造纸机压榨装置

第十四章造纸机干燥装置

-14.1 概述

--14.1 概述

-14.2 烘缸、烘毯缸和冷缸

--14.2.1 烘缸、烘毯缸和冷缸（上）

--14.2.2 烘缸、烘毯缸和冷缸（下）

--讨论

-14.3 供热系统

--14.3 供热系统

-14.4 强化装置及辅助设备

--14.4 强化装置及辅助设备

-第十四章测试造纸机干燥装置

--第十四章测试造纸机干燥装置

第十五章压光机和卷纸机

-15.1 压光机概述

--15.1 压光机概述

-15.2 压光机的主要部件

--15.2 压光机的主要部件

-15.3 普通压光机、半干压光机及光泽压光机

--15.3 普通压光机、半干压光机及光泽压光机

-15.4 软辊压光机、超级压光机及卷纸机

--15.4 软辊压光机、超级压光机及卷纸机

-第十五章测试压光机和卷纸机

--第十五章测试压光机和卷纸机

第十六章涂布机械与设备

-16.1 概述及涂料制备设备

--16.1 概述及涂料制备设备

-16.2 涂布器和干燥器

--16.2.1 辊式涂布器和气刀涂布器

--16.2.2 刮刀涂布器和干燥器

14.2.1 烘缸、烘毯缸和冷缸（上）在线视频

14.2.1 烘缸、烘毯缸和冷缸（上）课程教案、知识点、字幕