3.3 搓丝机在线视频

上一节我给大家介绍了
In last section, I have introduced

盘式磨浆机的情况
the disc refiner to you

这一节我们一起探讨一下
In this section, let’s discuss the relevant situation

搓丝机的相关情况
of the thread rolling machine

搓丝机源于
The thread rolling machine originated from

塑料和食品工业
the twin-screw extruder used in the plastics and food industry

使用的双螺杆挤压机
which is a kind of high-yield, multi-function

是利用塑料挤出工程原理
and energy-saving cleaning pulping equipment

和现代造纸制浆理论
developed by adoption of the principle

而开发的一种高得率、多功能
of plastic extrusion engineering and the principle

节能型的清洁制浆设备
of modern papermaking and pulping theory

它具有磨浆质量好、能耗低
It has the advantages of good refining quality, low energy consumption

用水量少、减少排污
less water consumption, less sewage discharge

有利于环境保护等优点
and environmental protection, etc

搓丝机将纤维分离
The thread rolling machine

化学药品浸渍
integrates many complex processes

蒸煮、洗涤、漂白
such as fiber separation chemical impregnation

和纤维的切断等多个复杂的
cooking, washing, bleaching

工艺过程汇集在磨浆机内完成
and fiber cutting in the refiner

搓丝机采用无刀式磨浆元件
The thread rolling machine adopts no-blade refining elements

利用动态挤压原理
and uses the principle of dynamic extrusion

通过纤维物料间相互揉搓
to complete the separation of fibers

完成纤维的分离
through the mutual kneading of the fiber materials

它的基本结构是由两个
Its basic structure is the mechanism composed

相互平行、彼此啮合
of two special screws which are

转向相同的特殊螺杆
parallel to each other, mesh with each other

和与其配合的机壳组成的机构
and turn in the same direction and the matching shells

这里大家不要忽略机壳的作用
Please don’t neglect the role of the shell here

我们后面在打浆部分
When we talk about the

讲到锥形磨浆机的时候
cone refiner in the beating part later

大家会对机壳的作用感受更深
you will feel more about the function of the shell

由于搓丝机两个螺杆的
Because the geometric parameters and the rotation direction

几何参数相同、转向相同
of the two screws of the thread rolling machine are the same

所以在啮合区除中心连线之外
so in the meshing area except the central line

各点的相对速度不同
the relative velocity of each point is different

所以产生的剪切速度不同
therefore, the shear velocity is different

又由于螺杆的纵向总是敞开的
And because the longitudinal direction of the screw is always open

物料能通过这些间隙
the material can come out from the meshing area

从啮合区出来
through these gaps

流到另一根螺杆的螺槽中去
and flow into the screw slot of another screw

其结果是物料的换位
The result is the displacement of the material

在空间呈∞形向前推进
which advances forward in the shape of ∞ in the space

正向螺旋的主要作用是
The main function of the forward screw is to

输送和压缩物料
transport and compress the material

到反向螺旋杆处
to the reverse screw rod

正、反向的螺旋
The forward and reverse screws

相互作用形成挤压区
interact to form the extrusion area

迫使物料从反向螺杆的开槽处挤出
forcing the material to extrude from the slot of the reverse screw

从而被剪切搓揉
thus being cut and kneaded

碎成一定长度的纤维状
and broken into fiber of a certain length

反向螺旋套磨浆元件
The reverse screw sleeve refining element itself

本身无正向输送能力
has no forward conveying capacity

物料的正输送是以压力损失为代价
and the forward conveying of the material is at the cost of pressure loss

压力降的大小不仅影响磨浆质量
The size of pressure drop not only affects the refining quality

而且涉及扭矩大小和功率消耗
but also relates to the torque and power consumption

浆料在正向输送元件
Under the action of forward conveying element

和反向输送元件的作用下
and reverse conveying element

形成高压区
a high pressure area is formed

纤维物料之间产生很大摩擦力
and a great amount of friction is generated between the fiber materials

导致纤维间的分离
which le ads to the separation of the fibers

进而使之分丝帚化、压溃
and then leads to the fibrillation and crushing of the fibers

在此压力作用下
Under this pressure

浆料纤维才通过
the pulp fiber is transported forward

反螺棱上的开孔正向输送
through the opening on the reverse screw edge

磨浆压力的大小和浆料浓度
The size of the refining pressure is related to the pulp concentration

反螺旋套几何尺寸因素有关
and the geometric dimension of the reverse screw sleeve

可以根据需要加以调节
which can be adjusted according to the need

压力最大值可以达8～10MPa
and the maximum pressure can reach 8~10MPa

这样高的压力和剪切力相结合
A combination of such high pressure and shear force

会使被处理的物料纤维吸收足够能量
will make the treated material fiber absorb enough energy

内部产生很大的应力
and generate great internal stress

加之纤维的取向作用
In addition, the fiber orientation function

使纤维轴向受力大
will make the fiber bear a great axial force

促使内部纤维之间联结的断裂
promote the fracture of the internal fiber connection

提高了纤维的柔软性和可塑性
improve the flexibility and plasticity

甚至使之帚化、分丝、压溃
and even make it fibrillation and crushing

在挤压过程中还可以加注药剂和蒸汽
In the extrusion process, chemicals and steam can also be added

使物料在机械作用的同时发生化学反应
to make the material have chemical reaction while under the mechanical action

以提高纸浆的质量
so as to improve the quality of pulp

双螺杆挤压搓丝机由电机
The double screw extrusion thread rolling machine is composed of motor

特殊齿轮动力分配箱、合式螺杆
special gear power distribution box, combined screw

剖分式机体、喂料器
split body, feeder

液压系统、药液注入系统
hydraulic system, liquor injection system

废液回收系统、机座等组成
waste liquid recovery system and machine base, etc.

这是一种搓丝机主要工作部件图
This is a drawing of the main working parts of a thread rolling machine

搓丝机是通过强制性
The thread rolling machine realizes the function of

迫使物料在经过组合式螺旋转子
refining by forcing the material to pass through

与机体耐磨套组成的
the high pressure refining area.

高压磨浆区域的过程中
composed of the combined screw rotor

实现了磨浆功能
and the wear-resistant sleeve of the machine body

螺旋转子主要由
The screw rotor is mainly composed

花键主轴、输送螺旋转子
of spline spindle, conveying screw rotor

强送螺旋转子、正压螺旋转子
forced-conveying screw rotor, forward-pressure screw rotor

和反压螺旋转子
and reverse-pressure screw rotor

按一定的要求和顺序
which are connected in series

通过积木组合方式串联在一起
according to a certain requirement and order

工作过程中
During the working process

两条结构完全相同的
two screw rollers with

螺旋辊相互啮合在一起
the same structure mesh with each other

共同完成磨浆区域
to complete the refining area together

这种积木组合螺旋转子
This kind of building block combination screw rotor

可以利用有限的螺旋转子元件
can use limited screw rotor elements

实现多种组合
to realize a variety of combinations

以满足不同产品的需要
so as to meet the needs of different products

在生产过程中In the process of production

必须根据造纸纤维原料的不同
the structure and number of screw rotors must be rationally designed

合理设计螺旋转子的结构和参数
according to the different raw materials of paper fiber

不同纤维原料的结构和参数不同
We have a deep understanding in terms of

这一点我们深有体会
different structures and parameters for different fiber raw materials

制浆造纸工程国家重点实验室
There is a set of TMP pilot test production line of Andritz

有一套安德里茨的TMP中试生产线
in the State Key Laboratory of Pulp and Papermaking Engineering

这套设备的挤压搓丝机
and the compression ratio of the extrusion and

是以木材为原料设计的压缩比
tread rolling machine of this set of equipment is based on wood

有一个企业来做实验时
When an enterprise came to do experiments

用来挤压竹子
it was used to squeeze bamboo

试了几次就把设备的端盖给挤爆了
After several tries, the end cover of the equipment was extruded to crush

所以应该根据不同的纤维原料
Therefore, the suitable screw rotor should be selected

不同工艺所需的压缩比
according to the different fiber raw materials

来选择合适的螺旋转子
and the compression ratio required by different processes

螺旋转子的使用工况及工艺条件
The working condition and process condition of the screw rotor

材料基体的耐磨组织结构
the wear-resistant structure of the material matrix

以及硬度、韧性、强度等
and the optimization of the combination of various performance indexes

各种性能指标组合的优化
such as hardness, ductility and strength

已成为双螺杆磨浆机螺旋转子用
have become the focus of the research on the properties

耐磨材料性能研究的焦点
of wear-resistant materials for the screw rotor of double screw refiner

当前，双螺杆磨浆机螺旋转子的
At present, the production and application of

生产应用比较广泛
screw rotor of double screw refiners are quite extensive

使用相对稳定的有
The following typical wear-resistant materials

如下几种典型的耐磨材料
are in relatively stable use

主要有高铬合金铸铁
mainly including high chromium alloy cast iron

耐磨球墨铸铁
wear-resistant nodular cast iron

沉淀硬化不锈钢等
and precipitation hardened stainless steel, etc.

高铬铸铁可以用到很好的耐磨性
The high chromium cast iron can be adopted for its good wear resistance

但是机械加工难度大
however, its mechanical processing is difficult

反压螺旋转子在使用过程中
and the teeth of the reverse-pressure screw rotor

容易出现断齿现象
are easy to break in the use

抗磨球墨铸铁具有
The wear-resistant nodular cast iron has

较高的强度、韧度和抗磨性
high strength, ductility and abrasion resistance

综合机械性能优越
Its comprehensive mechanical properties are superior

但在酸性条件下耐腐蚀性不好
however, the corrosion resistance is poor under acid condition

沉淀硬化不锈钢
The comprehensive mechanical property indexes

综合力学性能指标优良
of precipitation hardening stainless steel are excellent

另外该材料
In addition, the material has

耐酸性好，切削性好
good acid resistance and good machinability

但产品制作成本较高
but the production cost is high

而且在铸造过程中容易出现硬质点
And it is easy to appear hard spots in the casting process

给机械加工加大了难度
which makes machining more difficult

当前，在借鉴国外有关技术的基础上
At present, on the basis of referring to the foreign related technology

通过使用复合材料through the adoption of composite material

采用普通中碳钢材料作为基体材料
and using ordinary medium carbon steel material as matrix material

在螺旋转子的外面熔覆
the processing technology of cladding high hardness

高硬度耐磨合金层的处理工艺
wear-resistant alloy layer on the outside of screw rotor

兼顾了螺旋转子对
gives consideration to the requirements of

材料的韧性、高耐磨性
ductility high wear resistance

和可加工性等性能的要求
and machinability of the material of the screw rotor

使双螺杆搓丝机螺旋转子
which greatly improves the comprehensive performance

的综合性能有了很大的提高
of the screw rotor of the double screw tread rolling machine

将成为一定时期内
and makes it the development direction

该领域研究的发展方向
of the research in this field in a certain period of time

搓丝机这一部分我们就先学习到这里
That’s all for thread rolling machine

下一节再见
See you in the next section