CONSTRUCTION OF A BLENDER

By

Author

Presented To

Department of Chemical Engineering

ABSTRACT

Blender is an electric machine for size reducing soft food or liquid mixture. Blender is some time called liquidizer consists of a glass jar or jug containing a steel blade assembly at the base driven by a small electric motor.

Construction of blender was done based on the principle of size of reduction using electric motor as the major driver force. During the construction of blender, we adopted different stages which includes:

i. The production of preliminary drawings with details and dimensioned sketches.

ii. Choosing of design and materials used in the construction.

iii. Construction and fabrication of all the component of the blender which includes blender container, shires, blade and the motor, all these was coupled together.

iv. Examination and testing of the performance and efficiency of the machine.

After strictly adopting the aforementioned stages, a well structured blender made of steel (stainless & mild) was obtained as the end product. Also, for effectiveness of the size reducing action, the steel blade was sharpened and also the number of the blade was increased. Actually, the material selected for this project has reduced the cost of painting and it is found to be anti corrosion due to the high degree of chromium contents and other alloy.

The main object of this project which is to be able to fabricate the component using the primary tool in the mechanical workshop was achieved after all the difficulties uncounted during the construction of blender.

The project construction of blender in relation to materials for construction costed N22,000. Comparing this with the price of normal domestic blender, can be seen to be extremely high. This high is due to the material of construction and fabrication processes.

In considering all the resources channeled towards the construction, it can be rightly stated that the machine is economical in relation to materials used in the construction and the performance of the machine after construction.

TABLE OF CONENTS

Title page

Letter of transmittal

Approval page

Dedication

Acknowledgement

Abstract

Table of content

CHAPTER OF ONE: INTRODUCTION

CHAPTER TWO: LITERATURE REVIEW

2.1 Origin of blender as a size reduction equipment

2.2 Mechanisms of size reduction

2.3 Energy for size reduction

2.3.1 Energy utilization

2.4 Behaviour of material in size reduction process

2.5 Size reduction equipment

2.6 Modes of operation

2.7 Nature of the material to be crushed

2.8 Importance of size reduction

2.9 Reasons for selection of stainless steel

2.10 Maintenance of blender and use

2.11 Material selection for construction

2.12 Commonly used materials of construction

CHAPTER THREE: CONSTRUCTIONAL PROCEDURE

CHAPTER FOUR: DISCUSSION

CHAPTER FIVE: CONCLUSION/RECOMMENDATION

CHAPTER SIX: REFERENCES