1. A
PRESENTATION ON
HYDRAULIC PUMP:DESIGN AND SELECTION
B.Tech (Agril. Engg.)
Presentation By
Aarushi Chandrakar
Student ID - 20203293
Course Code – EFM-5424
BHARTIYA COLLEGE OFAGRICULTURAL ENGINEERING, DURG,C.G.
AFFILATED TO- INDIRA GANDHI KRISHIVISHWAVIDYALAYA, RAIPUR,C.G.
2. HYDRAULIC PUMP
• Hydraulic pumps are the devices which converts the mechanical energy into
hydraulic energy.
• Mechanical rotations are provided to the pump with the help of an electric
motor , which creates a partial vacuum in the inlet of the pump and allows
the fluid into the pump through inlet pipe .
• The entered fluid is being pushed by the pump into the various components of
hydraulic system or machine.
3. SELECTION OF HYDRAULIC PUMP
• The selection of hydraulic pump depends on following parameters-
1. Based on Types.
2. Based on Factors.
5. GEAR PUMP
• In gear pumps it is the meshing of the gears pushing against the pump housing wall, in
piston pumps it is the piston pushing in the piston silo against a valve plate.
• Gear pumps are the most commonly used hydraulic pumps.
• They are less mechanically complicated and are cheaper to manufacture. Gear pump
housings come in a variety of materials from cast aluminum to 316 L stainless steel.
6. VANE PUMP
• One great advantage of a vane pump provides is that it runs quieter than
either gear pumps or piston pumps.
• Also, vane pumps exceed gear pumps in pressures up to ≤ 4000 psi.
• Of the three pump types vane pumps tend to be the most dirt sensitive.
• For some mobile applications where noise is an application consideration
vane pumps are making a resurgence in use.
7. AXIAL PISTON
• These pumps are capable of routinely achieving continuous running
pressures > 5000 psi (345 bar).
• Some units are now approaching 7500 psi (520 bar). The higher pressures,
speeds and absence of large reservoirs are a weight saving strategy.
• These systems run at slower speeds and pressures from 1500 to 2000 psi.
8. BASED ON FACTORS
• The factors which are considered for pump selection are:
1. Capacity.
2. Pressure
3. Driving Speed.
4. Efficiency.
5. Fluid Type.
6. Pump Placement.
9. PUMP DESIGN
• Pumps convert mechanical power to fluid power.
• Hydraulic pumps which are mainly used are gear type, roller vane type or
axial piston variable flow type.
• The pressures developed by three main types of hydraulic pumps are as
follows:
• 1. Fixed gear/vane pump : Pressure up to 10.3 MPa
• 2. Pressure balanced gear/vane pump : 13.8-24.1 MPa
• 3. Pinion type pump : 27.6-34.5 MPa
The common speed of operation of pumps ranges from 3000 to 5000 rpm.
