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Material handling By PneumaticConveying Systems
Presented By -Shivam Kumar Gupta (0800110089)
Avinash Kumar (0800140023)
Arun Kumar Gupta (0800113027)
Rahul Saini (080014075)
Under the Guidance of
Prof. V.K. Gupta Sir
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Material Handling is the movement,storage, control and protection of materials,
goods and products throughout the process ofmanufacturing, distribution, consumption anddisposal.
Material Handling
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Pneumatic conveying is achieved bycreating a pressure differential along a
pipeline and using the air that moves towardthe area of lower pressure to move bulkmaterial.
Principle ofPneumatic conveying system
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Following step involves in working ofPneumatic Conveying System.1. Air is blow through a air Blower.2. Powder materials stored in a
Hooper .3. Then Air is go through pipe line to
Transporter where air is mixedwith powder materials.
4. Air inlet to Transporter via aValve.5. Then these mixture carried out
where it is used .
Working of Pneumatic Conveying
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Feeding positive pressure systems is that the air leakagearising from the adverse pressure gradient can interferewith the flow of the material into the pipeline.
Moisture contained present in powder material then it maychockthe pipe line.
Problem with conventional PneumaticConveying System
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The objective of the work was to developthe venturi feeding system to createautomatic suction effect, and to convey
material further in the stream of air.
Objective of Project
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Principal of Venturi Feeder
Venturi feeder workon the principle of
reducing the pipelinecross sectional
area in the regionwhere the material is
fed from the supplyhopper.
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Centrifugal Blower
Power Rating
680WDischarge Rate
2.8m3/min
RPM16000rev/min
Main Components
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Pipe Materials - Mild Steel
Diameter - 65 mm
Length - 5 m
Application - To CarryPowder
Materials
Conveying pipes
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There are 3 Throat pipeof Diameter
20mm
25 mm30 mm
Throat
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Differential Manometer
Capable of measuring pressure Difference betweenconveying pipe to throat.
Water and Air Mixture is Use.
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Pipe Cutting- Cut the Pipe into many Pieces forthe fabrication of Pneumatic system.
Steps of Working Procedure
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Threading is done on theLathe Machine
Threading is use to
couple venturi to mainconveying line.
Pitch of thread:- 3mm
Thread:-V thread
Threading
P i f i
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Sheet metal Cutting formanufacturing ofventure's Convergent andDivergent Part.
Processing of venturi
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Drawingon sheet metal
Cut Sheet according toDrawing
Bent Sheet into ConicalShape
Now weld to formconvergent and divergent
shape.
Sheet Metal Development
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Drawing
Drawing is made by geometrical instrument(pencil , scalecompass , protector)
1st venturi drawing detail:-
1. Length of converge part:-55mm
2. Diameter of throat:-20mm3. Length of throat:-45mm
4. Length of divergent part:-90 mm
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Continued.
2nd venturi detail:-
1. Length of converge part:-90 mm
2. Length of throat:-85mm
3. Length of divergent part:-130 mm
4. Diameter of throat:-25mm
3rd venturi detail:-
1. Length of converge part:-45 mm
2. Length of throat:-85 mm
3. Length of divergent part:-60 mm
4. Diameter of throat:-30mm
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The venturi for the pull push type conveying systemdesigned considering general considerations :-
Convergent cone venturi has a total included angle of211.
Divergent cone has a total included angle lying between5 to 15.
Diameter of throat varies from 1/3 to of the pipe
diameter(Generally times diameter of pipe).After this consideration we use Pythagoras theorem to
calculate the length of converge part and diverge part.
How we fix the length of venturipart.
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Drilling on Throat
Drilling on Throat to makea passage to inlet powdermaterial.
Another hole for pressuremeasurement byManometer.
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Fabrication of venturi
Welding :-
Gas welding used to join converging throat & divergingpart of venturi.
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Final shape of venturi
Final Shape of Venturifor Suction of RawMaterial
&Measurement OfPressure by Manometer.
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Fabrication of conveying pipe
Arc welding is used for joining the pipes
Mild steel pipe is used for conveying the material.
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Hopper
No of Hopper -: One
Shape-: Conical
Use-: Feed the Powder Material From Hopper to Venturi
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Socket
No of Socket-: 2
Material- : Mild steel
Use- : Made Connection between Venturi & ConveyingPipes
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Valve
No of Valve-: One
Use-: Regulate the air flow by Air Blower
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Base
Air Blower
Pneumatic Pipes
Venturi
Manometer
it all Placed on the Base Which made of Ply Wood..
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Final assembly of pneumaticconveying system
All parts of Pneumatic pipes , Venturi joined with thehelp of Valve and Socket .
final Shape Placed on the Bed..
R di
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Venturi Bloweropening
Head atinlet ofsystem(cm)
Pressureat inlet
Head atthroat ofsystem(cm)
Pressureat throat
System 1 1 57 1.069 12.9 0.974
3/4 55.1 1.067 15.5 0.993
1/2 37.5 1.049 33.5 1.000
System 2 1 61.3 1.073 8.5 0.992
3/4 55 1.067 15.5 0.998
1/2 43.2 1.055 27.1 1.005
System 3 1 53.4 1.065 17.2 0.991
Reading
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SYSTEM 1
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SYSTEM 2
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SYSTEM 3
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It is clear the graph that suction at the throat sectionincreases with the blower opening.
According to Graph, maximum suction pressure developfor system 1.
It is maximum for full opening i.e. at full discharge.
Comparison of Different VenturiSystem
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The main advantage of pneumatic conveying system isthat material is transferred in close loop, there by
preventing the environmental effect on the material andvice versa.
In pneumatic conveying, power consumption is a functionof the system design, transfer rate, and convey length.
Because compressed air is injected along the conveypipeline, the system automatically adjusts the compressed
air distribution to break plugs when they occur.
As there are less moving parts so less wear and tear ascompare to Belt Pulley System.
Advantage to Other ConveyingSystem
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The applications of pneumatic conveying systems can beseen in many industrial sectors. A list of industrial fieldswhere it has extensively been used is given below
Chemical process industry
Pharmaceutical industry
Mining industry
Agricultural industry
Mineral industry
Food processing industry
Applications:-
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Apparatus cost:-7000
1. Blower:-2500
2. MS pipe:-1000
3. Base:-1000
4. Valve:-500
5. Socket:-500
. Inspection cost:-1500
1. Manometer:-1000
2. Pressure gauge:-500
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Typical Cost analysis
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The main conlusion of the work was to use venturi-feeding system for the pull push type pneumatic conveyingsystem, thereby developing the suction effect at the venturithroat. This will help to create the automatic suction of the
material into the system through the inlet provided at thethroat. This system then can be operated by the singleperson and has numerous practical applications for theautomatic transportation of powdered and granular material.
CONCLUSION
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