Pump Mechanical Engineering PDF

Pump  Purpose of pump A pump is driven by a motor. The motor drives the pump to send the necessary amount of fluid to the target height.  Classification of general pump Turbo-pump Centrifugal Whirl pump =Volute pump Turbine pump =D...

Pump  Purpose of pump A pump is driven by a motor. The motor drives the pump to send the necessary amount of fluid to the target height.  Classification of general pump Turbo-pump Centrifugal Whirl pump =Volute pump Turbine pump =Diffuser Mixed flow Axial-flow pump Axial flow pump pump Positive displacement pump Piston pump Reciprocation Ram pump pump Gear (gear) Rotary pump Screw pump pump Q  About the turbo type and the positive displacement Turbo type The impeller is rotated in the casing , and the kinetic energy caused in the centrifugal force is converted into the pressure energy. Positive displacement type The liquid is fed forcefully by the action of thrusting aside such as the piston plunger rotors.  Structures of Centrifugal Pump Casing Pressure resistance Space to install the part Space for liquid flowing Liquid Flow of Centrifugal Pump Pressure: Low Flow velocity: High Pressure: High Flow velocity: Low  Structure of Centrifugal Pump Casing Shaft Bearing Impeller Shaft seal device  Types of Impeller for Centrifugal Pump Axial-flow pump Direction of the rotation Impeller Q Bearing Structures of Centrifugal Pump Casing Main shaft Bearing Shaft seal device Thrust bearing Radial bearing  Structures of Shaft Seal for Centrifugal Pump Gland packing method Gland packing Rotation ring spring Stationary ring Mechanical seal method Q  Constructional Example of Shaft Seal Rotation ring (Mechanical seal) Stationary ring Spring Sliding surface Shaft Contact side of rotation Body ring and stationary ring. Spring The rotation ring is suppressed. Rotation ring It fixes to the shaft side. The sliding ring moves to the Stationary ring It fixes to main body (casing) axial direction. side. It doesn't move. Introduction of typical pump  Classification and representative example summary of pump Centrifugal Eddy (volute) pump pump In general, calling the axial-flow pump is few. Turbine (diffuser) Turbo-pump pump (axial-flow Mixed flow pump pump) Axial flow pump Piston pump Reciprocation Plunger pump pump Positive displaceme Diaphragm pump nt pump Gear pump Rotary pump Screw (screw) pump Vane pump  Whirl pump Principle The impeller rotates in the high-speed in the casing (container), and the centrifugal force that acts on water is used. The impeller is turned by the driving energy of the motor rotation, and height from a low place. Impeller Feature When a big flow rate is necessary The double suction pump is used. The main usage It is suitable for deep draft small flow rate. Water Outlet Shaft seal Shaft Water Inlet Impeller Casing Pump Canned pump Principle Similar to the whirl pump’ principle This area is motor structure Feature A canned pump is integrated with the power machine. The shaft seal part of the pump is removed. The main usage This part is whirl Completely prevent the pump leakage from inside and strong against toxicity  What is Canned Pump ・・・ ①Canned Pump is a pump that combines the pump section and motor section into a single unit and never leaks fluids because of the unique structure. ②Handle toxic, explosive, expensive, hazardous, carcinogenic and corrosive fluids without any possibility of emissions into the environment. This area is motor structure This part is whirl pump  Discharge Self-circulation Suction Process Fluid Canned motor pump  Consumables Stator Unit Bearing Sleeve Impeller Casing Rotor Unit Thrust collar Let‘s remember the names of parts ！ Facility study: Pump END