Vibratory conveyor

Vibrating conveyor-ppt

1. PRESENTATION ON VIBRATING CONVEYOR KUMARI DIPTI DHOBA ADM NO-10PFE/15 1 ST YEAR M.TECH( Ag.engg )

2. CONTENTS INTRODUCTION DEFINATION TYPES OF VIBRATING CONVEYOR WORKING PRINCIPLE FUNCTION POWER REQUIRMENT SPECIFIC APPLICATION ADVANTAGES LIMITATIONS

3. INTRODUCTION A conveyor system is a common piece of mechanical handling equipment that moves materials from one location to another. Conveyors are especially useful in applications involving the transportation of heavy or bulky materials. Conveyor systems allow quick and efficient transportation for a wide variety of materials, which make them very popular in the material handling and packaging industries. Many kinds of conveying systems are available, and are used according to the various needs of different industries.

4. What is a Vibrating conveyor?? A Vibrating Conveyor is a machine with a solid conveying surface which is turned up on the side to form a trough. These vibratory machines transmit both static and dynamic forces to their supporting structures. Materials can be moved downward, horizontally, or up to 10 degrees slopes. It can convey coal, limestone, sand, coke, granite, gravel, food materials etc.

5. Types of Vibrating conveyor There are two basic types of vibrating conveyors: ( 1)Natural frequency vibrating conveyor This is consists of a trough mounted on an elastic element and driven by an electric motor via an elastic connecting rod, which causes sinusoidal mechanical vibration. These are supported by heavy-duty stiff coil or leaf springs. This results in minimum power requirements, minimum drive forces and a uniform distribution of inertia forces over the length of the conveyor . (2) Controlled vibration vibrating conveyor These supported by rocker arms or rods pivoted at the trough and at the base connections. The movement of material on the pan of a vibrating conveyor is dependent on the vibratory motion of the pan.

6. Heavy Duty Vibrating conveyors will meet the most rugged demands of various industry. Capacities exceeding 500 TPH with conveying speed 90 FPM are possible. Standard Duty Vibrating Conveyors handle light and medium density material Capacities up to 40 TPH and conveying speeds up to 60 FPM. On The basis of design it is of two types Standard Duty Vibrating Conveyor Heavy Duty Vibrating Conveyor Drive Assembly Drive Assembly Dust-Tight Cover Infinite Life Leaf Springs Trough Trough Dynamic counterbalance Stabilizer arm Isolation system

7. WORKING PRINCIPLE Vibratory machines work on the simple principle of throwing the product particle into the air in both horizontal and vertical direction and then collecting(catching) it and repeating the cycle . When these actions occur at several cycles per second the machine has the ability to move a deep bed of material fairly and quickly. The advantages of utilizing vibratory equipment are its numerous capabilities, versatility and relatively low maintenance characteristics.

8. TROUGH TROUGH MOTION LEAF SPRING PUSH ROD ECCENTRIC BEARING SUBFRAME FATIGUE CRACKING SUPPORT STRUCTURE Vibratory conveyor configuration

9. A trough or tube is flexibly supported and vibrated at relatively high frequency and small amplitude to convey bulk material or objects. A metal trough mounted on flexible supports and free to move in a vertical plane. It is vibrated at an angle of about 30 degrees to the horizontal. The material being conveyed moves in a series of gentle pitches and catches that blend to produce continuous, uniform flow. There is no tumbling or sliding of the material to cause wear of the trough. Continued…….

10. FUNCTION The functioning is based on obtaining a common frequency between the elastic system and the drive unit. The used system relies on the energy conservation theorem. If an elastic element supporting a certain mass is pressed or stretched with a certain force, it absorbs and supplies the same energy.

11. POWER REQUIREMENT The power requirement to maintain a vibrating conveyor is extremely low since the elastic elements themselves act as accumulators of energy. The energy supplied by the electric motor is only the energy required to replace losses caused by the friction . Total energy requirements Energy absorbed by the drive unit Element Energy produced by the elastic system

12. SPCIFIC APPLICATION Vibrating conveyors are used where horizontal or shallow incline conveying is required. They handle a wide variety of bulk materials, from powders to solids. They are designed to handle fragile, sharp and irregularly shaped materials, and are primarily used in the forest products, stamping, food, grain and chemical industries. They are used extensively in food grade applications where sanitation, washdown and low maintenance are essential.

13. Vibrating conveyors are also suitable for harsh, very hot, dirty, or corrosive environments. Due to the fixed nature of the conveying pans vibrating conveyors can also perform tasks such as sorting, screening, classifying and orienting parts. Vibrating conveyors have been built to convey material at angles exceeding 45° from horizontal using special pan shapes. Flat pans will convey most materials at a 5° Incline from horizontal line. Continued…….

14. WASTE RECYCLING CASTING CASTING PIECES

15. Food Industry Chemical industry Rubber Industry Forest Products industry

16. ADVANTAGES • Can readily handle hot or abrasive materials. •Handles fragile materials (potato chips, cereal flakes, etc.). Without degradation •It is normally self-cleaning. •No return strand to carry over. •Simple construction with minimum number of moving parts. •Moving parts are not in contact with material. •Minimum safety hazard to persons working on or near conveyor . Conveyor can perform special operations (scalping, dedusting , magnetic separation, lump breaking, washing, heating, cooling, drying, etc.) while conveying.

17. LIMITATIONS • Not all materials can be conveyed. • Not a positive type of conveyor; conveying speed obtained may vary with different materials. • Degree of slope for conveying is limited. • Substantial foundation, supporting structure, or special construction is required with unbalanced forces. • Limited length of conveyor per drive.