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Fabrication For A Set Of Sieves And Shaker

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54 Pages
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6,731 Words

Fabrication for a set of sieves and shaker involves the meticulous crafting of perforated devices designed to separate particles based on size through mechanical oscillations. Sieves, typically composed of durable materials such as stainless steel or brass, feature precise mesh openings tailored to the specific particle sizes under consideration. The shaker, an integral component in this process, imparts controlled vibrations to the sieves, facilitating efficient particle separation. The fabrication process necessitates skilled engineering to ensure the sieves’ accuracy in mesh dimensions and the shaker’s reliability in generating consistent vibrations. Crafting these instruments demands a fusion of metallurgical expertise and mechanical precision to create a reliable system for particle size analysis.

ABSTRACT

The fabrication of a set of sieves and shaker was carried out in paliton workshop, Enugu. After a thorough analysis on the suitable materials to be used in fabrication, galvanized steel was chosen due to its advantages over materials of fabrication. The fabrication was carried out in order to analyze the sizes of particles. The component parts of the sets of sieve and their dimensions are as follows:
Height of sieve 5.5cm
Number of sieves 7
Diameter of sieve 13.5cm
Shape of sieve circular
Height of sieve set 44cm
In fabricating this set of sieves, some factors were taken into consideration and they are:
The capacity of the sieve.
The type of mixture that can be filtered in it.
The types of properties and composition of the mixture.
The type of material to be used for fabrication of the sieve and shaker.
The mechanism of the filtration process and also,
The cost, which is the determinant, factor in fabrication of any equipment.
These factors help greatly in the fulfillment of the objective of this project study. And after fabrication the projects were tested and seem to be working very efficiently with a reasonable separation of particle and cut diameter.
Using the above dimensions, the following fabrication procedures were undertaken, layout, cutting, drilling, welding, filling sand papering, washing and painting, drying assembling.
Finally, the set of sieves and shaker were subjected to the process of washing, painting and drying.

 

 

 

 

TABLE OF CONTENT

Title page
Approval page
Letter of transmittal
Dedication
Acknowledgement
Abstract
Table of content

CHAPTER ONE
1.0 INTRODUCTION

CHAPTER TWO
2.0 LITERATURE REVIEW
2.1 Model
2.2 Screening
2.3 Types of screens
2.4 Screen surface
2.5 Factors in selecting screen equipment
2.6 Method of feed

CHAPTER THREE
3.0 MATERIAL OF CONSTRUCTION
3.1 Aluminum and aluminum alloy
3.2 Carbon and low alloys steel
3.3 Corrosion
3.4 Contact or galvanic corrosion

CHAPTER FOUR
4.0 FABRICATIONAL PROCEDURE
4.1 Layout
4.2 Cutting
4.3 Drilling
4.4 Welding
4.5 Filling
4.6 Sand papering
4.7 Washing and painting
4.8 Drying
4.9 Assembling

CHAPTER FIVE
5.0 OPERATION AND MAINTENANCE
5.1 Function of some parts of the electrically vibrated screen.

CHAPTER SIX
6.0 RECOMMENDATION AND CONCLUSION
6.1 Costing
REFERENCE

CHAPTER ONE

INTRODUCTION
Generally, all engineering aspects involve fabrication more especially for chemical plants or equipment, which are used for several processes. This fabrication is carried out so as to achieve and put to practice chemical processes with the help of some components for equipment used for the fabrication procedures enables engineers to deal with operations for separating the component of a mixture, which is automatically based on particle size analysis of materials from one particular sieve to another.
Chemical engineering mostly deals with the fabrication of sieve among other fabrication in order to fulfil the theory of separation technique. In separation processes especially particle size analysis is where sieving technique are available.
During the operation of particle size analysis, many types of screen can be involves, which include Grizzy screens, Revolving screens, mechanical shaking screens, vibrating screen, electrically vibrated screens, oscillating screen, Reciprocating screens and Gyratory screens.
As this project involves the fabrication of set of sieves, it therefore requires good layout and easy separation of oversize and undersize in the contacting sieve unit.
Moreover, in the fabrication of set if sieves, we have to bear certain qualities in mind in which the set of sieves will have to portray such as determination of size and shape of the equipment, which contributes to the efficiency of the equipment. Among the above aim, the set of sieves should be considerable in terms of costing and also availability and portability of the set of sieve should be considered.
Above all, the set of sieve is fabricated in such a way that the particle of larger size than that of the sieve will be retained on the sieve while the particle of lower size will pass through the sieve and be collected on and9othet sieve as undersize, which is also separated by that sieve.

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Fabrication For A Set Of Sieves And Saker:

Fabricating a set of sieves and a shaker involves creating a series of mesh screens with specific sieve sizes and a mechanical device (the shaker) to agitate the sieves, facilitating particle separation. Here’s a step-by-step guide on how to fabricate these items:

Materials and Tools:

Mesh: Purchase mesh sheets with varying mesh sizes, depending on the sieves you want to create.

Frame Material: Choose a sturdy, corrosion-resistant material for the frames. Common options include stainless steel or aluminum.

Welding Equipment: If you’re using metal frames, you’ll need welding equipment like a MIG or TIG welder.

Sieve Sizes: Determine the specific sieve sizes you need. These should correspond to your application or testing requirements.

Shaker Mechanism: Design and gather materials for the shaker mechanism. You may need motors, eccentric weights, and a frame to mount the sieves on.

Fasteners: Bolts, nuts, and washers to assemble the frames and the shaker.

Safety Gear: Safety glasses, gloves, and appropriate clothing for welding and working with machinery.

Fabrication Steps:

1. Design the Sieves:

Determine the sizes and mesh specifications for each sieve you need in your set.
Calculate the frame dimensions to accommodate the mesh size and maintain structural integrity.

2. Cut Mesh Sheets:

Using appropriate cutting tools (e.g., shears or a laser cutter), cut the mesh sheets to match the dimensions of each sieve.

3. Fabricate the Frames:

Cut and weld the frame material into the shapes needed for your sieves.
Ensure the frames are square and have sufficient strength to hold the mesh securely.

4. Attach Mesh to Frames:

Lay the cut mesh sheets onto the frames.
Use fasteners or a clamping mechanism to secure the mesh tightly to the frames.

5. Label the Sieves:

Mark each sieve with its mesh size for easy identification.

6. Assemble the Shaker:

Design and construct the shaker mechanism according to your needs. This may involve mounting the sieves on a frame with an eccentric motor or other agitation mechanism.

7. Test the Sieves:

Test each sieve to ensure that it accurately separates particles according to their size.

8. Calibrate the Shaker:

Calibrate the shaker to control the intensity and duration of agitation for effective particle separation.

9. Quality Control:

Check for any defects in the sieves, such as loose mesh or frame deformities, and address them.

10. Safety Precautions:

Make sure that all safety precautions are in place, especially when working with welding equipment and machinery.

11. Documentation:

Document the specifications, calibration settings, and any maintenance requirements for the sieves and shaker.

12. Maintenance Plan:

Develop a maintenance plan to keep your sieves and shaker in good working condition over time.

Remember that the specific design and fabrication process may vary depending on your exact requirements and the materials you choose. Always prioritize safety and precision in the fabrication process to ensure the accuracy of your sieves and the functionality of the shaker.