Tuesday, February 21, 2012

The Concept Behind Centrifugal Water Pumps and Its Advantages Over Other Types of Pumps

Centrifugal water pumps are another type of pump that is characterised by its impeller, which is like a turbine that has curved vanes. It is named after the physics concept of centrifugal force, which is defined as a centre-fleeing force away from the axis of rotation of a rotating object.

Centrifugal pumps are generally used to transport fluids from large sources and into smaller connections like piping. These pumps are available in various classifications such as the peripheral vane and radial impeller.

Centrifugal pumps are widely used because of its key assets - low vibration, even rate of flow and compact structure to name a few.

How centrifugal pumps works

As the water enters the pump impeller, the impeller pushes the water outward as its backward-swept blades spins. The mechanical energy of the motor is converted to the kinetic energy of the water in motion, and some of that energy is converted to potential energy attributed to lifting the water up against gravity.

Simply put, think of an umbrella that is wet with rain. When you rotate it slowly, due to inertia, the water that drips around the sides will tend to rotate tangential to the edges of the umbrella. However, rotating it faster will cause the water to drip away from umbrella, known as centrifugation.

A centrifugal pump has six basic parts: impeller, pump axis, pump body, stuffing box, seal ring and bearing. One of the more important innovations for the evolution of the centrifugal pump is the impeller. Originally, an innovation was made to design these types of pumps so that there are only a few moving parts, thus the impeller was made. In fact, it is the only moving part in centrifugal pumps.

The primary body of this device, called the pump body, is used to hold up the entire equipment. The bearing is used as a form of support for the pump axis. The main purpose of a seal ring is to increase reflux resistance and lowering the leakage from within. Finally, a stuffing box is used for sealing the breach in between the pump axis and the shell.

Advantages of Centrifugal Pumps

There are several types of water pumps, including vacuum pumps and submersible pumps. However, centrifugal pumps are quite popular because of their versatility, plus the fact that they do not require a lot of maintenance and literally costs less. Moreover, it can be directly plugged in since it is fully equipped with the capacity to power up its own motor.

Visit your nearest pump distributor now for more details in finding the right pumps solutions to your water pumping needs.

Monday, February 20, 2012

Different Types of Pumps

Pumps are devices that are used for fluid movement by either mechanical or physical action. There are different types of pumps, which are essentially designed in terms of how each mechanism move or transfer fluids such as slurries or other form of liquids, and their varying degree or load capacity. The following are just some of the varying types of pumps available in the market today.

Positive Displacement pumps

These types of devices work by displacing out intentionally trapped fluid towards the discharge pipe. Unlike other types of water pumps, these devices always produce a constant flow even if the discharge pressure changes. Positive displacement pumps are considered very efficient because of its designed. It uses natural force to move air away from the piping, meaning you will not need extra power to vacuum out the air along the lines in order to pull the fluid out.

Positive displacement pumps are also classified into the following types: rotary type, reciprocating type, and linear type. Rotary pumps use the vacuum created by rotation to draw in liquid, thus it is highly efficient and the need to manually remove the air is no longer necessary. The reciprocating type uses oscillating pistons for suction and discharge to lift up fluid. There are various types of reciprocating positive displacement pumps, such as piston displacement pumps, diaphragm pumps and plunger pumps.

Diaphragm pumps are one of the most commonly used positive displacement pumps in the shipping and processing companies. These pumps are designed fundamentally for safety, and are available in the market at a very reasonable price. Moreover, it is powered by compressed air, a rather modern approach to pumping fluids.

Centrifugal Pumps

A centrifugal pump uses an impeller to increase the flow rate, which in turn increases the pressure on the fluid. There are many kinds of centrifugal pumps. These types of pumps are generally used in moving any form of liquid through a piping system.

The most commonly used centrifugal pump is the radial flow type. Radial flow pumps, or more specifically, radial impeller, operate through the rotating impeller thereby pushing the fluid to flow radially out onto a chamber from which it exits to the outside piping.

On the other hand, axial flow pumps allow fluids to exit parallel to the direction of entry, except at a higher level. In this case, the rotating pump acts as a kind of propeller inside a tube.

Wednesday, February 15, 2012

Different Types of Water Pumps and Its Applications

Water pumps are important devices, not just for industrial companies but also for regular household needs. Pumps are commonly used to provide continuous supply of water in commercial establishments, industries, and homes. However, this equipment can also be used to transfer other forms of liquid. There are various types of water pumps available in the market today that will surely suit your needs.

Water Pump Applications

Water from an underground source can be obtained using a water pump. For homes, these devices are used to supply water for the household. Some water pumps are positioned underground and supported by additional motors above the ground to aid in the process. For taller buildings, like skyscrapers, additional pressure tanks help supply water in the top floors.

Several other types of water pump carry a wide range of applications. Aside from supplying water, they are key components of refrigerators, trucks, washing machines and motorboats.

In addition, keeping one on hand will definitely be a big help in case of emergencies. Cleaning up after a flood will actually be much easier if you have a water pump ready.

Types of Water Pumps

Two of the most common types of water pumps are jet pumps and submersible pumps. The main difference between these two aside from their positioning, is the efficiency of its functionality.

Jet pumps are generally placed above ground, and it vacuums the water up the pipelines. Submersible pumps are essentially located beneath the surface, submerged under the water source. It uses the pre-existing pressure from its position to pump or push water out. Although jet pumps are cheaper, submersible pumps are generally more durable and energy efficient.

Other types of pumps also include sump pumps, centrifugal pumps, and vacuum pumps. Sump pumps, for example, are generally used to drain water that has accumulated in low-lying areas such as the basements. Sump pumps can work either by draining the water down a pre-existing drainage system, or it may simply drain the water outside. Like any other devices, it needs regular maintenance check to ensure its usability. You may clean it at least once a year. Because of its basic function, debris could easily clog its motors.

For your water needs, water pumps offer the most convenient pump solutions that are efficient and cost-effective. Certainly, these devices are essential to make your life more comfortable. 

The Advantages of Using Submersible Pumps

Submersible pumps are generally used to pump out water or any other form of liquid from which it is submerged into. As such, it is designed with a tight seal to keep the liquid from its internal components, hence protecting the motor from any possible corrosion. It comes in various designs for an assortment of applications – for dewatering, sewerage, slurry, aeration and bars screens.

Submersible pumps and jet pumps have the same basic functionality, they can both be used to get water out from a well or a borehole. Jet pumps are placed above the ground and function by pulling water out into a pipe. Submersible pumps, on the other hand, are submerged and placed close to the bottom of the well. The direct pressure underneath is applied to push water out from the water source, which is why submersible pumps are a cut above jet pumps.


ü  Submersible pumps are energy efficient.
Submersible pumps use direct pressure from underneath the well to push the water out, even at long distances. Compare that to other types of pumps, which exert added force in order to pull the water up from its source, generating a lot of noise in the process.

ü  Self-priming characteristic of submersible pumps
Other types of pumps need some primary requisites or settings before you can start the motor. In the process, you may have to replace valves or removing nozzle obstructions. Submersible pumps push the water right out once you set the motor running because the machine itself is already surrounded by water. 

ü  Maintenance-free
Initially, submersible pumps may cost more compared to jet pumps. Nevertheless, these pumps are built to last longer, giving you the right value for your money. You do not have to worry about leakages, corrosion and overheating problems. Of course, conducting a regular check-up is still important, but the newly manufactured submersible pumps are especially designed for heavy-duty work with lesser maintenance.

Choosing the Right Type of Pumps

As mentioned earlier on, submersible pumps are used for a variety of applications. They are used as pumping devices for slurry and sewage. They are also used for aquarium filters, and are commonly used for oil and water wells.  

There are several factors you need to consider before making your choice. These factors are the discharge size, maximum discharge, horsepower, and full expulsion flow. For example, some water pumps utilize only one-half horsepower, which can do suitable work if the water level is not so low. Depending upon your needs, you must ensure that you get top quality submersible pumps from reputable pump manufacturers. Some even offer post-purchase customer service to guide you with its installation and maintenance.