This document provides an overview of a presentation on root blowers. It defines an air compressor as a device that takes in gas or vapor, increases its pressure, and delivers it at high pressure. It notes that a blower is one type of air compressor. The document then focuses on root blowers, describing their working mechanism where lobes trap air and increase its pressure before delivery. It includes videos demonstrating two-lobe and three-lobe root blowers. The document outlines advantages of root blowers like quick attainment of full revolutions and lower partial-load power demand. It also lists some applications for root blowers such as in drying, paper industry processes, and dust collection systems.

1. A Presentation on
ROOT BLOWER
By
Mr. Prathmesh A. tapdiya
(BE Mechanical)
Guide :
Prof. S.Mayekar
Department of Mechanical Engineering
FAMT, Ratnagiri

2.  What is air compressor ?
 A compressor is a devise which take in gas
or vapor, increases its pressure and deliver it
at high pressure.
 Blower is a one type of air compressor

3.  ROOTS BLOWER
 VANE BLOWER
Root blowers

6. WORKING:-
The lobes are so designed that they
provide an air tight joint at point of
their contact.
 One of the rotors is rotated by
external means. The other is gear is
driven by the first one. When the
rotator rotate, the air at atmosphere
pressure is trapped in the pockets
formed between rotor and casing. The
rotary motion of the lobes deliver the
entrapped air into the receiver. Thus
more and more air is delivered in to
the receiver. This increases the
pressure of air in the receiver. finally
the air is used at required pressure
from the receiver.

8. Video of two lobe root blower

9. Video of Three lobe root blower

11.  A roots-blower quickly attains the full number of
revolutions;
 The power demand in the partial-load range is lower.
Roots-blower advantages

12.  A conveying speed once chosen can only be altered with
considerable expenditure;
 In order not to exceed the operating pressures, a control device
must be installed; on account of the narrow piston clearance
 The roots-blower is sensitive to foreign matter, i.e., Filter cleaning
of the conveying air is required;
 After a longer period of use, the piston clearance becomes larger
and leads to capacity losses.

15.  Air knives
 Drying
 Paper industry
 Flour mills
 Jet pulse filters, blowers supply pressurized air for pulse
jets
 Vacuum systems, vacuum handling
 Biodiesel plants
 Dust collection systems
 Sand blasting processes
 Painting machines
 Kenitex applications
 Grain handling
 Agriculture applications