The document discusses different mechanical devices used to increase pressure or velocity of gases, including compressors, blowers, and springs. It describes the basic workings of positive displacement and dynamic compressors. Blowers are defined as devices that increase gas velocity rather than pressure. Common applications of compressors, blowers, and springs are also outlined.

1. Priyadarshini college of engineering , Nagpur.
• Sub-> BCME
• section -> T { group 6 }
• Roll no.-> 2021 – 2024
• Topic -> introduction to basic mechanisms and operations of ,
pumps , blowers , compressors , springs .
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8. • Compressor are similar to pumps,
both increases the pressure on a
substance and both can transport the
fluid through pipe.
**----------------------------- **
*Introduction*
“A compressor is a
mechanical device that
increases the pressure of
a gas or air by reducing
it’s volume”.
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Compressor

9. Positive displacement compressor
• { Air drawn in a chamber, then
compressed by reducing the volm
of the chamber }
• Reciprocating Rotary
Compressor Compressor
Dynamic compressor
• { Air is accelerated to high velocity ,
then passed through a diffuser }
Centrifugal axial
Compressor compressor
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11. --------------------------------------------------------------------------------------------------------------------------------------
Uses :-
spray painting, pressure washing, fountains, scuba driving, cooling (refrigerator), engine,
manufacturing, workshops, construction, industrial automation
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what are its applications ?
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Compressor have many everyday uses, such as in :-
Air conditioners , (car, home).
Home and industrial refrigeration.
hydraulic compressors for industrial machines.
Air compressors for industrial manufacturing.

12. -----------------
Blower ->
• Blowers are equipment or devices
which increase the velocity of air or
gas when passed through equipped
impellers.
•
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introduction
What do you mean by
blow ?
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13. • Air is trapped between the impeller pockets of the rotating
impeller and is then accelerated centrifugally.
• The air stream is ducted by centrifugal force into the side
channel blower. It is then taken up by the impeller pockets and
the,
Air is re-directed back into the following pocket, where the
process is repeated.
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14. IS BLOWER A COMPRESSOR ?
THE MAIN DIFFERENCE BETWEEN AN AIR COMPRESSOR AND AN AIR BLOWER IS
THE PRESSURE RATIO OF EACH. ... A COMPRESSOR COMPRESSES AIR INTO A SMALL
SPACE WHICH MAKES THE AIR DENSER. A BLOWER MOVES AIR/GAS WITH A
MODERATE INCREASE OF PRESSURE.
The industrial blowers are classified into two types based on
the direction of the airflow,
and

15. Advantages
• Relative small size
• Low maintenance coast
• Used as vacuum as well
• Easy to use for domestic proposes
Disadvantages
• Not high pressure
• Low energy efficiency 55-65 %
• High pitch of noise while use
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16. Uses :-
• They are mainly used for flow of air required for exhausting,
cooling, ventilating, conveying etc.
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17. • Objective:-
• The objective of a spring are to
cushion, absorb or controlling of
energy arising due to shock and
vibration.
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*Introduction*

18. Methodolgy:-
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19. Advantages
• Durable- They lust for a long time and
provide good values for money.
• Easy to use- for example, tension
springs can be adjusted easily in
verticals.
• Small – the relatively small size of
tension spring allows them to fit many
application even with limited space.
Disadvantages
• Conical springs are costly.
• Shape as well us stability.
• Buckling is a problem when the axial
load is increased .
• Repairing is difficult if, the spring is
broten.
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20. TOYS
ELECTRONICS
PENS AND NOTEBOOK
MEDICAL DEVICES
VEHICLES
MINING AND DRILLING
Uses of spring:-
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21. Thank you
presented by :group 6
Kajal : 2021
Alhan :2022
Atik :2023
Yash :2024
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