机械毕业设计1104螺旋榨汁机设计说明书

摘要

在果蔬的破碎、提取汁液的工艺上，有机械榨取、理化和酶法提取三种方法。但理化和酶法提取因其适应性的局限和副作用的产生而在使用上收到限制。机械式榨取果汁蔬液广泛应用在番茄、菠萝、苹果、柑橘、橙的压榨上。螺旋式连续榨汁机就是机械法榨汁的主要机械与设备之一。螺旋式连续榨汁机是采用压缩体积的方式使果料的固体与液体成分分离，榨取汁液。可以为中型食品企业和餐饮业提供榨汁的需要，是一种常用的食品机械。本设计的螺旋式连续榨汁机介绍了以压缩体积为基础的榨汁机的设计要点、工作原理和设备组成。设计主要通过变螺距变径螺杆，让榨汁机能充分榨出果蔬汁液。它的特点是结构简单，外形尺寸小，榨汁效率高，操作很方便，故在食品工厂广泛使用。

关键词：机械榨取；压榨；螺旋式连续榨汁机；食品机械

Abstract

Broken in fruits and vegetables, the juice extraction process, mechanical extract,chemical and enzymatic extraction of three methods. However, because of the physical and chemical and enzymatic extraction adaptability limitations and side effects produced and received restrictions on use. Mechanical liquid vegetable juice extract is widely used in the

tomato, pineapple, apple, citrus, orange crush. Continuous spiral juicer is one of the main machinery and equipment mechanical method juice. Screw Continuous juicing machine is used in a way that the volume of compressed fruit material separating solid and liquid components, the extraction of juice. Juicing can provide needed food for medium-sized businesses and restaurants, is a commonly used food machinery. The design of the continuous spiral juicer introduced to compress the volume-based design points juicer, working principle and equipment. Designed primarily by variable pitch screw adjustable, allowing fully functional juice squeezed fruit and vegetable juices fluid. It is characterized by simple structure, small size, high efficiency juice, the operation is very convenient, it is widely used in food factories.

Key words：mechanical extract ；press；the spiral continuous juicer ；food machinery

要………………………………………………………………………………………....II Abstract ................................................................................................................................... I I

1 前言 (1)

2 研究现状 (1)

3 作用原理 (2)

4 出汁速率的分析 (2)

5 总体设计 (2)

5.1 整体布局设计 (2)

5.2 工作原理 (3)

5.3 螺杆部分的设计 (3)

5.4 螺杆直径和螺距的设计 (4)

5.4.1 螺杆转速的确定 (4)

5.5 功率计算 (5)

6 选择电动机 (6)

6.1 选择电动机功率 (6)

6.2 确定电动机转速 (6)

7 设计V带 (6)

P (6)

7.1确定计算功率ca

7.2 选择V带的型号 (6)

7.3 确定带轮基准直径1D和2D (7)

7.3.1 初选小带轮的基准直径1D (7)

7.3.2 算出带的速度V (7)

D (7)

7.3.3 计算大带轮直径2

7.4 确定传动的中心距a和带长d L (7)

7.5 验算小带轮的包1a角 (8)

7.6 确定V带的根数Z (8)

F (8)

7.7 确定带的预拉力0

7.8 求带传动作用在轴上的压力Q (8)

7.9 V带设计计算 (9)

8 带轮的设计 (9)

8.1 材料 (9)

8.2 带轮的形式 (10)

8.3 带轮尺寸设计计算 (10)

9 螺旋轴的设计 (11)

9.1 材料的选取 (11)

9.2 设计轴的结构和尺寸 (11)

9.3 初步估算轴的轴端直径 (12)

9.4 轴上零件的周向定位 (12)

9.5 设计圆角半径值 (12)

9.6按弯扭合成条件校核轴的强度 (12)

9.6.1 轴的计算 (12)

9.6.2 求轴上所受作用力的大小 (12)

9.6.3 轴垂直面内所受支反力 (13)

9.6.4 作弯矩图 (13)

9.6.5 作扭矩图 (14)

9.6.6 作当量弯矩图 (14)

9.7 校核轴的强度 (14)

10 筛筒部设计 (14)

11 轴承端盖的设计 (15)

11.1 材料 (15)

11.2 凸缘式轴承端盖各尺寸计算 (15)

12 轴承的选择 (16)

13 键的选择 (16)

14 螺栓的选择 (17)

15 螺钉的选择 (17)

参考文献 (17)

致谢 (18)