Contents
What is a Hand Pump?
Hand pumps are manually controlled pumps that move fluids or air between places using mechanical advantages and the power of humans. Each nation in the world uses them to serve an assortment of industrial, marine, irrigation, and recreational uses.
A check valve at the entrance and outlet ports of the chamber functions in the opposite direction for the majority of hand pumps, which generally operate on a piston, diaphragm, or rotary valve principle. Positive displacement pumps, such as plunger or piston pumps, make up the majority of hand pumps.
Hand pumps can be put in hand-dug wells or boreholes, and they are frequently used in nations with limited resources for both private and public water supplies.
Applications of a Hand Pump
Below are the common applications of hand pump:
- Considering a great deal of people in rural areas depend on groundwater for drinking, these pumps are frequently used there.
- Shear-sensitive fruits and vegetables are also used by them.
- The manual pump is frequently used in agricultural settings.
- It is used for slurry and sludge transfers.
- For both lubricating and non-lubricating oil pumping
- Concerning paints and varnish
- Hand-held pumps are used for dispensing lotions, creams, and cosmetics.
- Historically used for gluing
- These pumps are also used for pond filtering, aeration, and collecting water from wells.
Diagram of a Hand Pump
Types of Hand Pump
The common types of hand pump are centrifugal pump, positive displacement pump, submersible pump, and jet pump.
Centrifugal Pump: These pumps produce a fluid flow through the use of a rotating impeller. They are frequently used in applications that call for high flow rates.
Positive Displacement Pump: These pumps use a piston or diaphragm or other mechanical device to create a fluid flow. They are often used in applications that call for high pressures.
Submersible Pump: are frequently used in sewage systems, aquariums, and well pumping due to their capacity to operate underwater.
Jet Pump: These pumps produce a fluid flow by launching a high-pressure water jet. They are frequently used in circumstances when an acceptable flow rate is necessary.
How Does Hand Pump Work
Pressing down on the pump lever pulls water into the cylinder. The piston moves upward and the foot valve opens when the pump lever is pressed downward; the piston non-return valve closes as the piston moves upward.
The operator raises the pump lever when the piston achieves the highest point of development. The piston goes downward and the foot valve closes when the pump lever pulls upward; the piston non-return valve is open all through this entire motion. This movement enables water to be transported from the piston non-return valve’s underside to its topside. The water that is currently on its topside similarly travels greater as the piston rises upward in the next motion.
More liquid gets sucked into the cylinder and the water level increases as a result of continuously pulling and pushing on the hand pump lever. The water starts to flow out of the pump when the level climbs to the discharge pipe’s height.
Advantages of a Hand Pump
Below are the benefits of hand pump in their various applications:
- Placing water pumps is straightforward.
- They’re also quite powerful and adaptive.
- Water pumps that are controlled physically are quite resilient.
- They are a reliable and reasonable option.
- The hand pump is affordable.
- Its design is uncomplicated.
- Electricity or any other kind of power source is all that is necessary.
Disadvantages Of Hand Pump
Below are the limitations of hand pump:
- High initial cost – acquiring and constructing a pump can be costly, especially in large-scale applications.
- Maintenance – to keep pumps functioning properly, they need to receive regular upkeep.
- Energy Consumption – Pumps can consume a lot of energy, which increases the prospect of unnecessary operating costs.
- Noise – workers and nearby families might consider pumps to be a nuisance due to their substantial noise generation.