projet final 2012.pptx

7/31/2019 projet final 2012.pptx

1/37

6/7/12

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


2/37

6/7/12

Material Handling is the movement,storage, control and protection of materials,

goods and products throughout the process ofmanufacturing, distribution, consumption anddisposal.

Material Handling


3/37

6/7/12

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


4/37

Click to edit Master subtitle style

6/7/12

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


5/37

6/7/12

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


6/37

6/7/12

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


7/37

Click icon to add picture

6/7/12

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.


8/37

6/7/12

Centrifugal Blower

Power Rating

680WDischarge Rate

2.8m3/min

RPM16000rev/min

Main Components


9/37

6/7/12

Pipe Materials - Mild Steel

Diameter - 65 mm

Length - 5 m

Application - To CarryPowder

Materials

Conveying pipes


10/37

6/7/12

There are 3 Throat pipeof Diameter

20mm

25 mm30 mm

Throat


11/37

6/7/12

Differential Manometer

Capable of measuring pressure Difference betweenconveying pipe to throat.

Water and Air Mixture is Use.


12/37

6/7/12

Pipe Cutting- Cut the Pipe into many Pieces forthe fabrication of Pneumatic system.

Steps of Working Procedure


13/37

6/7/12

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


14/37

6/7/12

Sheet metal Cutting formanufacturing ofventure's Convergent andDivergent Part.

Processing of venturi


15/37

6/7/12

Drawingon sheet metal

Cut Sheet according toDrawing

Bent Sheet into ConicalShape

Now weld to formconvergent and divergent

shape.

Sheet Metal Development


16/37

6/7/12

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


17/37

6/7/12

Continued.

2nd venturi detail:-

1. Length of converge part:-90 mm

2. Length of throat:-85mm


4. Diameter of throat:-25mm

3rd venturi detail:-

1. Length of converge part:-45 mm

2. Length of throat:-85 mm


4. Diameter of throat:-30mm


18/37

6/7/12

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.


19/37

6/7/12

Drilling on Throat

Drilling on Throat to makea passage to inlet powdermaterial.

Another hole for pressuremeasurement byManometer.


20/37

6/7/12

Fabrication of venturi

Welding :-

Gas welding used to join converging throat & divergingpart of venturi.


21/37

6/7/12

Final shape of venturi

Final Shape of Venturifor Suction of RawMaterial

&Measurement OfPressure by Manometer.


22/37

6/7/12

Fabrication of conveying pipe

Arc welding is used for joining the pipes

Mild steel pipe is used for conveying the material.


23/37

6/7/12

Hopper

No of Hopper -: One

Shape-: Conical

Use-: Feed the Powder Material From Hopper to Venturi


24/37

6/7/12

Socket

No of Socket-: 2

Material- : Mild steel

Use- : Made Connection between Venturi & ConveyingPipes


25/37

6/7/12

Valve

No of Valve-: One

Use-: Regulate the air flow by Air Blower


26/37

6/7/12

Base

Air Blower

Pneumatic Pipes

Venturi

Manometer

it all Placed on the Base Which made of Ply Wood..


27/37

6/7/12

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


28/37

6/7/12

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


29/37

6/7/12

SYSTEM 1


30/37

6/7/12

SYSTEM 2


31/37

6/7/12

SYSTEM 3


32/37

6/7/12

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


33/37

6/7/12

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


34/37

6/7/12

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:-


35/37

6/7/12

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

. -

Typical Cost analysis


36/37

6/7/12

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


37/37

6/7/12

projet final 2012.pptx

Documents