Short presentation on Belt Conveyor.

1. Presentation on
“Belt Conveyor”
Presented by:
Maharub Hossin Manik (192-002-651)
Al Shahriar (192-003-651)
Fahim Ahmed Nafi (192-004-651)
Presented to:
Hasan Ali
Lecturer
Dept. of IE, BUFT

2.  Motivation
 Introduction
 Classification
 Components
 Capacity Determination
 Advantages and disadvantages
 Conclusion
Content

3. Motivation
Conveyor systems remain popular due to their time and labor saving
benefits. The main purpose of a conveyor is to move objects from one
place to another.
• Belt conveyor system is one of the most simplest ways to do it.
• It is generally less expensive than other conveyor systems.
• They are the most versatile material handling system.
• Belt conveyor being able to transport a wide range of objects, of all
shapes and sizes.

4. Introduction
A belt conveyor is a material handling system designed to
move supplies, materials, and components using an efficient
and effortless process. The system works with an endless
belt operating between two or more pulleys with its load
supported on idlers.

5. Classification
i. Stationary belt conveyor
ii. Portable and mobile belt conveyor
i. General purpose
ii. Special purpose
 According to purpose
 According to design

6. Components
 Frame
 Endless Belt
 Drive mechanism
 Pulleys
 Idlers
 Loading & Discharging device
 Belt cleaner etc. Figure: Belt conveyor components

7.  Endless Belt
• High strength
• Low mass
• High flexibility
• High wear resistance
• Long service life
The belt consists of one or more layers of material;
an under layer and an over layer.
 Essential properties of belt

8.  Pulleys
 Drive pulley
 Move and turns the belt around.
 Tail pulley
 Located at the loading end of the belt.
 Snub pulley
 Usually used to change direction of the belt.
 Take up pulley
 Pulls down on the belt to maintain tension via gravity.

9.  Idlers
• Flat roller idler
• Troughed roller idler
Figure: Flat roller idler
Figure: Trough roller idler
 Idler type
 Supports belt and material load.
 Efficiency of conveyor largely depends on idlers

10.  Loading Device
 Design of loading device depends on-
-Nature and characteristics of load conveyed.
-Method of loading.
 Bulk materials are loaded using feed hopper.
 Piece goods are loaded directly or using various
types of chutes.

11.  Discharging Device
 More than one point discharge.
 Generally used in flat and horizontal conveyor.
 Plough scrapper or tripper (a throw-off carriage) is used.
Figure: Plough scrapper Figure: Tripper

12. Design of belt conveyor
Design of belt conveyor system is based on-
 Available space.
 Horizontal conveying length.
 Characteristics of material to be conveyed.
 Capacity requirement.
Figure: Belt conveyor designed

13. Capacity Determination
Cross sectional area of bulk load over the belt,
Q theoretical = 3600 F1 v γ
F1 = 0.16B2× C1 ×tan (0.35 φ)
= 0.16×0.52× tan(0.35×15)
= 0.0037
Where,
Belt width, B = 0.5m
Correction factor, C1 = 1
Static angle of repose, φ = 15
Capacity of the belt conveyor,
Where,
Belt speed, v = 2m/sec
Bulk weight of material, γ = 100 kg/m3
= 3600×0.0037×2×100 kg/m3
= 2646.35 kg/m3
= 2.646 tons/m3
Therefore, theoretical capacity of the belt conveyor is 2.636 tons/m3

14.  High load carrying capacity.
 Large length of conveying path.
 Simple in design.
 Lower self weight.
 Easy maintenance.
 High reliability for operation.
 More flexible.
Advantages

15. Disadvantages
 Vertical transportation can not be done.
 A separate arrangement for material handling is required.
 Hot materials can not be transported.
 High initial cost for long distances.

16. Conclusion
Belt conveyor saves our time and helps to reduce repetitive lifting and
carrying of materials. Most importantly it helps to improve the
efficiency and productivity.
As it is one of the most cheapest ways to move material long
distances, many industries use belt conveyor system to transport raw
materials and products through the stages of a process.

17. T H A N
Y O U
K