小型搅拌器创新设计【11张CAD图纸和说明书】

目      录

前言·······························································1

第1章  设计任务书···············································2

第2章  总体设计················································3

第2.1节  设计依据···············································3

第2.2节  工作过程的拟定·········································3

第2.3节  传动方案的选择········································3

第2.4节  传动比的分配···········································4

第2.5节  筒体结构的初步设计····································5

第3章  传动装置及电动机的选择·································5第3.1节  选择传动方案···········································5

第3.2节  电动机的选择···········································5

第3.3节  传动比的分配···········································6

第3.4节  计算传动装置的运动参数和动力参数···················7

第4章  联轴器设计··············································9第4.1节  选择联轴器的类型······································9

第4.2节  计算联轴器的转矩·····································10

第4.3节  联轴器的确定以及其基本尺寸·························10

第4.4节  联轴器的附加说明····································10

第5章  蜗杆的设计···············································12

第5.1节  选择蜗杆传动类型·····································12

第5.2节  选择材料··············································12

第5.3节  按齿面接触疲劳强度进行设计·························12

第5.4节  蜗杆与蜗轮的主要参数与几何尺寸·····················13

第5.5节  验算传动比············································14

第5.6节  校核齿根弯曲疲劳强度································14

第5.7节  精度等级公差和表面粗糙度的确定··························15

第5.8节  初步确定蜗杆上的最小直径····························15

第5.9节  蜗杆的结构与各段直径和长度·························16

第5.10节 初步选取滚动轴承·····································16

第5.11节 蜗杆上零件的周向定位·······························17

第6章  主动轴的设计············································18

第6.1节  初步确定轴的最小直径································18

第6.2节轴的结构设计·········································18

第6.3节求轴上的载荷·········································19

第6.4节求作用在轴上的力·····································20

第6.5节按弯扭合成应力校核轴的强度·························20

第7章主动轴的设计···········································21

第7.1节  从动轴的结构设计·····································21

第7.2节从动轴的工作结构图··································21

第8章蜗轮轴的结构设计及蜗轮的结构设计····················22

第8.1节  蜗轮结构··············································22

第8.2节  求出蜗轮上的功率P转速n·····························22第8.3节  求作用在蜗轮上的力···································22第8.4节  轴的结构设计··········································23

第8.5节  根据轴向定位要求确定轴的各段直径和长度··········23第8.6节  确定轴上圆角和倒角尺寸······························25

第9章  筒体的设计··············································26第9.1节  筒体结构的确定·······································26第9.2节  确定筒体的壁厚·······································26

第9.3节  送料孔和卸料孔的设计································26第9.4节  筒体各部分尺寸的确定································27第9.5节筒体的技术要求··········································27第10章  振动频率的设计········································28

第10.1节  用瑞利法求筒体的固有频率··························28第10.2节  振幅的设计···········································30

小结 ·····························································33

参考文献 ························································34致谢·····························································35

前   言

搅拌操作在食品工业以及化学工业中占有十分重要的地位，大多数面糖类食品以及化学药品都离不开搅拌，搅拌是借助于流动使两种或多种物质在彼此之中相互散布的一种操作。其作用可以实现物质的均匀混和，也可以促进溶解，气体吸收，强化热交换等物理化学的变化，“通过机机械动作，使物质按一定的规律流动的方法称为机械搅拌，简称搅作，这种机械称为搅拌机械”[1]

传统搅拌器一般都只作纯旋转流动，被搅拌的物品易粘在筒体上且混合不均匀，或者就只是搅拌杆在运动，搅拌效果并不理想效率较低，而且引进结构复杂，质量较大。

本搅拌器在传统的设备上有较大的改进，是通过电动机带动蜗轮减速器减速后用弹性联轴器直接连接起来，功率损耗小，能够实现装料筒体在转动时，给其以振动力，不仅可使物品混合均匀，而且可避免粉状物品粘在筒体壁上，可以根据实际需要方便操作控制振动力的大小有无，由于重量较轻，使用方便且不受环境的限制，所以适用范围比较广泛，适用于各种实验室以及各种食品工业以及化学工业等领域。

随着人们对物质文化的需要越来越高，这就对生产力的要求也就越来越高，生产工具的改进是提高生产力的主要途径，只有生产工具不断的改进，生产率、产品质量不断的提高，才会在竞争日益激烈的社会中才有立锥之地。本搅拌器作为一种改进创新的生产设备，对生产效率和产品质量的提高有着举足轻重的作用。

第一章     参数及设计内容

小型多用途振动搅拌器设计

        已知 ：  （1）工作容积  V=9升 

（2）转速    n=25r/min     

（3）振动频率  h≤100HZ

（4）振幅    A≯0.02 mm

（5）功率　　Ｐ＝120W

设计内容：

(１)总装配图设计

(２)减速系统设计

(３)涂料筒的设计

(４)大部分零件设计

(５)设计说明书一份

第二章    总体设计

第2.1节   设计依据

本次设计为实验用振动搅拌器的设计，已知条件为：

                 （1）工作容积  V=9升 

（2）转速    n=25r/min     

（3）振动频率  h≤100HZ

（4）振幅    A≯0.02 mm

（5）功率　　Ｐ＝120W

第2.2节   工作过程的拟定

    本振动搅拌器可通过电动机带动,经过一个减速器把速度降低再传给主动轴,而主动轴上安装一对橡胶轮,即主动轴转动的同时橡胶轮也跟着转动,为使筒体转动稳定,可靠,同时在支架上也安装一个从动轴且从动轴上也安装一对橡胶轮,这样,筒体可直接放在主动轴和从动轴上,当主动轴转动时,筒体可平稳转动,但为使涂料搅拌均匀,不仅在筒体转动的同时也给其以振动,因此,为防止主动轴与蜗轮轴在振动时不在同一条直线上,以致损坏机器的正常工作和对人的危险,在主动轴与蜗轮之间用一根软轴连接。