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PNEUMATIC CONVEYING SYSTEM

 
The art of transporting bulk materials through a pipe line by either a negative or a positive pressure airstream is called Pneumatic Conveying. The simplest pneumatic conveyor is a miniature hurricane, directed to a certain destination by means of a pipe. The air, when moving with sufficient velocity, will carry objects in its path, depending on its substance or weight. The reference to art is made here because Pneumatic Conveying is more an art than a science.

Pneumatic Conveying Systems are designed by vast experience, rather than just by formulae. Rishikesh Exports offers optimally designed systems which offer considerable economy.
The Concept Pneumatic System
General Description
 
1. Zones  :
a) Prime mover zone
b) Feeding Mixing & Acceleration zone
c) Conveying Zone
d) Gas-solids Separation
 
2. Basic Components :
a) Compressors
b) Blowers/ Fans or vaccum pumps
c) Rotary Feeders
d) Piping
e) Diverting Valves
f) Dust Separators
g) Control Systems
 
3. Selection & Design Criterion :
a) Size of system i.e.capacity
b) Material to be conveyed
c) Space constraints
d) Reliability
e) Economics
 
4. Phase :
a) Dense phase system
b) Dilute phase system
 

Pneumatic Conveying offers the user the following advantages:

Dust free transportation of a variety of products.
Flexibility in routing – can be transported vertically & Horizontally by the addition of a bend in the pipeline.
Distribution to many different areas in a plant and pick-up from several areas. 
Low maintenance and low manpower costs.
Multiple use - one pipeline can be used for a variety of products.
Ease of automation and control.

 

Pneumatic Conveying Systems

positive pressure system ositive pressure system
Positive Pressure System Negative Pressure System
ositive pressure system ositive pressure system
Combined Negative Positive Pressure System Negative Pressure System
Application :
 
Applications vary from polymers to minerals and food grains to chemicals. The characteristics of materials play a key role in selection & design of a conveying system. Some of these are: Heat Sensitivity, Cohesiveness, Friability, Abrasive property etc.
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