Water pumps are a tool widely used lately, because with them you can supply water to areas where the water flow does not reach by itself or the momentum and power of the water does not have the necessary strength to be distributed through the pipe, either in a building, a house, a company or a facility for multiple purposes, are also often used in areas where there is no drinking water system and must be supplied the vital liquid directly to the tanks or reservoirs or areas where they are needed, being a completely useful tool for all these tasks, so on the next page you will find information about everything related to these machines and you can learn some of their differences and learn a little more about them, so I invite you to take a walk and you can know them and find out a little more in your research.
- How to choose a water pump or motor pump
- Difference between pump and motor pump
- Classes and types of water pumps
- Technical aspects to consider when choosing a water pump
- Which pump to select according to applications and use?
- Which water pump to choose for clean fluids?
- How do dirty water pumps work?
- Choosing a water pump for dirty fluids
- Submersible Water Pumps
- Selection of submersible water pumps
How to choose a water pump or motor pump
Well the first thing you need to know is that a water pump is a tool used to move or pump, hence its name, water from one place to another with a certain pressure and at a certain speed which makes its transfer safely and efficiently, being widely used to extract water from wells and supply water to domestic areas or irrigation systems for planting or draining spaces that have a source of white water or sewage, so depending on what your need the market offers a variety of types and models for each of the applications.
However I tell you that in order to choose a water pump or a motor pump you must first be clear about what will be the use you will give or what is your need, because the power and efficiency changes depending on what you are going to use it for, since the pressure they print the liquid can change the shape or consistency of this, that is, it is not the same that you use it for drinking water to be used for water with waste or to transport liquids such as milk or oil, each of these substances has a particular demand.
Difference between pump and motor pump
When you go shopping you will find that in the market there are these two types of mechanisms to propel liquids, so it is important that you know their difference, since each one responds to specific needs. Therefore, first of all you have to know that a water pump is a hydraulic mechanism that is responsible for transforming the energy making it change from mechanical to kinetic and this provides the necessary power to drive the liquid, in the case of water pumps its difference lies in that the mechanism of energy transformation or hydraulic mechanism is driven by an electrical system that is connected to the mains or a battery for operation.
Unlike the previous mechanism, motor pumps are also responsible for transforming mechanical energy and produce kinetic energy with which the liquid to be moved is propelled, but in this case its starting system depends on an internal combustion engine, i.e. it depends on the burning of fossil fuel, which makes the mechanism work, since the combustion process provides the energy it needs to operate. Unlike the ones above, motor pumps offer you the advantage of being able to use them in a portable way since they do not depend on the electrical network, which means that they can operate anywhere without any problem.
Classes and types of water pumps
As I said before, in the market you will find a great variety of mechanisms to transport liquid, however I would like to share with you some of the most common models that exist in the following list:
- Positive displacement pumps, this is the most common of the mechanisms of hydraulic displacement of liquids, as it is usually the simplest and most practical to use, its function consists in the modification of the size of the space between the intake and exhaust. This type of mechanism is found in several types of pumps which are subdivided as follows:
- Plunger mechanism, its system works by actuating several chambers by means of movement, alternating between these the pressure exerted and obtaining more pumping power.
- Rotary transmission mechanisms, this type of system causes the liquid to rotate inside the pump and gives a different speed at each moment, which causes the pressure to increase and to go from low to high pumping pressure from the intake system to the expulsion system.
- Pneumatic mechanism pumps, this type of pump has inside an air compressor that is responsible for producing mechanical energy and delivering power to the liquid pumping system, since the compressed air works as the starting energy of the system.
- Hydraulic pumps, in this case the source of energy is produced by the water, that is, the power and energy with which the water flows is what starts the mechanism that gives it more power and pressure to pump large quantities of water at high speeds.
- Electric pumps, in this mechanism the starting system depends on the electrical system, which is what makes the compression mechanism, responsible for pumping water, operate.
- Manual pumps, in this case the mechanism works by means of the injection of compressed air that is obtained by means of the movement of a lever that makes the system fill with air as it rises and drains the air from its interior towards the extraction system to drive its mechanism and pump the liquid from one place to another.
- Combustion pumps or motor pumps, this type of system operates by burning fossil fuel, which drives the pumping mechanism, i.e., the combustion engine such as the one in vehicles is the one that produces the starting system.
- Hydrodynamic pumps, this type of mechanism works through the combination of movement, making the liquid has to pass through the middle of each of the processes, reducing or expanding its size as appropriate, for this type of mechanism there are also different forms of operation:
- Centrifugal mechanism, in this type of mechanism the liquid is transported from the lower part of the machine to the upper part in a rotating way, which makes the variation gives it pressure and pumping power.
- Cylindrical mechanisms, in this type the liquid has to pass a series of rotating mechanisms that produce a cylindrical effect that exerts the necessary pressure and power for pumping.
- Helico-centrifugal mechanisms, in this case the water has to pass through the whole mechanism that produces a kind of rotating funnel from the intake system to the expulsion system, similar to the one produced by the washing machines, but with higher pressure and power.
Technical aspects to consider when choosing a water pump
As I indicated above, water pumps are mechanisms that are responsible for moving water from one place to another at a certain pressure and speed, but for this to happen, a number of scientific and technical elements that you must know must be met, as they are vital for the execution of pumping, which means that if any of these fails, the transformation of energy from mechanical to kinetic will not occur.
Therefore, you must take into account, first, is that water inflow or flow rate is necessary according to your need, ie, how much constant liquid flow is needed in a specific time, which you can calculate in time by dividing the amount of liquid you have by the time you want to be moved, which will give you as a result liquid / time (minutes, hours, seconds, etc.).
On the other hand you must take into account the absorption capacity you need, for this you need to know at what height is the water inside the well or tank, with this you will obtain as a result a variable called suction height, this will allow you to know the distance that the liquid will travel from the place to the pump. Then you must take into account the data provided by the knowledge of the height from where the water will be driven, that is, what is the distance that the water will travel driven by the pump, you get this by measuring the distance from the pump to the place of arrival of the water, which will have the distance or height of impulsion.
After you have this data you should consider obtaining the total height, that is the distance from where the water is located to the place where it should arrive, this data is obtained in a simple way, what you should do is add the suction height together with the height of impulsion and will result in the total height or also known as geometric height, since it is the total distance between the starting point and the point of arrival of the water.
However, it is important to keep in mind that water pumps have a head loss during operation, so this must be calculated, because if you do not do it you will not get the expected result of drainage in the established time, that is, you will feel that the mechanism is inefficient when in fact it is that your calculations do not consider the loss of load. This is calculated taking into account the path of water within the system, since it is not the same that the water moves linearly to have to make a series of curves, which is simplified with a correlation, ie, the more curves the less water flow and therefore there will be more loss of load or pressure, however this calculation will depend on the system you intend to install, since each one is different, in this case I recommend that you rely on the web with the standard tables that appear for this type of case.
Now, once you have calculated all this set of data of your installation you need to know what is the pressure you need, that is, at what power should pump the pump required to make an efficient installation. You will get this by calculating the impulse that your pump must produce or the pressure it must exert, also known as manometric height, which you obtain by adding the geometric height or total height with the value of the loss of your system, which will give you as a result the suction and impulsion that your water pump must perform when working in your drainage system, which will be indicated on the pressure gauge that the pumps usually bring, serving as a mechanism for monitoring the operation of your system.
Which pump to select according to applications and use?
To make this selection you must take into account the application you are going to give it, because you can not buy a water pump for one function and use it for something else, as it would probably lose power, efficiency and you could even damage it or simply not work, so you must know if the mechanism you need is for clean water or for wastewater or sewage. Once you have in mind you must take into account that the mechanism of operation of each one is different, since in the case of pumps for drinking water its system works by sucking the water from the place where it is located to it and transferring it to the place of destination.
In the case of pumps that transport water with waste or sewage, their operation is different, since they do not suck the water but drain it to the destination driven by a rotating mechanism through which the water passes, its operation is similar to that of air fans, since inside there are a series of blades responsible for distributing the water through the mechanism indicated and to the destination. For this reason, a clean water pump cannot be selected to drain sewage, since the amount of waste that the latter has can clog the suction mechanism.
Which water pump to choose for clean fluids?
As I have already told you in the market you will find a number of brands and models of pumps depending on what you need it for, however I would like to suggest some brands and models that you can consider for this function, so here is a list of them:
- Oaklan BP – 1240: this is a water pump with a capacity of ½ horsepower, and a speed of 3460 revolutions per minutes, capable of pumping 40 liters per minutes, which makes it idea for domestic jobs, as it can maintain your drainage system without problem, as well as supply clean water to areas outside the house.
- Truper BOAP- 1: this is a surface pump for clean water that offers you a capacity of ½ horsepower, with a pumping power of 45 liters per minute, which can work very well for home drainage system, small surface irrigation system, and tank drainage to supply home plumbing.
- Petrul BOAP – 1/2P: this pump offers a capacity of ½ HP, with a pumping capacity of 40 liters per minute, giving you 3500 revolutions per minute, which makes it ideal for draining areas such as tanks, pumping drinking water to the home plumbing system, as a home support system, or to maintain the flow in a swimming pool.
- Truper pres – 1: this is a type of hydromantic pump, which has 1 horsepower as working power, pumping 53 liters per minute, at a speed of 3450 revolutions per minute, and a maximum working time of 6 continuous hours, which makes it a powerful machine that can serve you to be used outdoors and areas a little larger than the domestic, I feel ideal for sending water ponds to domestic areas or for pumping water in irrigation systems.
How do dirty water pumps work?
As I indicated above the operation of this type of mechanism is simple, however I will deepen a little in its operation, telling you that its operation depends on several components, first is the electrical system that is responsible for providing the energy needed to operate the pumping mechanism. This mechanism is responsible for pumping the water along with its waste, so its function depends on the rotor it has that when rotating moves the blades it has in a circular shape which makes the water and its waste to meet this mechanism is hit by these blades and this blow and subsequent rotation produces a change in the direction of the water, causing it to take the course indicated in the drainage system.
Once the water is redirected, it is inside the drainage system of the pump itself, which is responsible for expelling it to the piping and drainage system provided for this purpose. It is normal that in this type of system there are a number of filters, both inside and outside the pump, in order to filter the dirt contained in the pipe water and make the system more efficient, which will save you time and money, because if you do not have this series of filters the system can clog and cause damage to the mechanism.
Choosing a water pump for dirty fluids
When buying a pump of this type you must take into account its specifications and make sure it works to drain sewage, because if it does not work for it you will not be able to perform the function you expect, so I leave here a list of brands and models of machines for this type of activity:
- Surtek BS510: this pump offers you a power of 1 horsepower, in an operation of 216 liters per minutes and a vacuum speed of 3350 r/min, with a working time of 6 hours continuous, being ideal for home installations, distributing the dirty water from the house to the drainage area.
- New Leaf 1: the pump of this company offers a power of 2 horsepower and a pumping capacity of 7500 liters per hour, with an automatic shutdown system when submerged, with an operation of 400W provided by the starter motor, and a silencer system ideal for domestic use, as it does not produce annoying noises, it is functional in small tanks, outdoor area ponds among others.
- Stainlees: this water pump offers a power of 1.5 HP, with superior efficiency, as it is capable of pumping up to 16500 liters per hour, with automatic ignition by floating, which makes it can be used in much larger areas than houses as its capacity is greater, so it is recommended for businesses or outdoor uses where there are areas that need to be drained.
- Bacoeng: this plastic pump offers you a power of ½ horsepower, but it is ideal to work with clean or dirty water, with a capacity of 7500 liters per hour, and a flow rate of
- 2000GPH: which is ideal for draining spaces such as basement or ponds, which is ideal for draining those areas or helping your home drainage system, as it gives you good dual utility and good power handling.
Submersible Water Pumps
The submersible water pumps are an advanced industrial development that was developed to access places where conventional pumps could not reach, its operation is to drive the water through a series of hoses that are inside the tank or pond, and through the suction mechanism drives the water to the destination, usually have an automatic ignition mechanism through a float that detects the water level and makes it run its operation, controlling the flow of water and at the same time avoiding that it is on at all times.
Its suction mechanism is the same as that of the surface water pumps, since it is in charge of admitting the water and impelling it to the distribution system by means of the rotation of a rotor that impels the water from the admission chamber to the expulsion system, its starting impulse usually comes from an electrical system, which is the one that supplies the necessary voltage to make the mechanism work when the float indicates that the water level is low.
Selection of submersible water pumps
In the market there are a number of submersible pumping mechanisms, which provide good performance, however I would like to make a suggestion and recommend some of them that I consider work very well and can help you in the choice, leaving them in the following list:
- Surtek BSL510: this is a pump that brings you a power of 1 horsepower of working capacity, with a flow of 208 liters of water per minute, with a vacuum speed of 3350 r/min, with a working time of 6 hours continuous, being ideal for domestic installations, as it has an excellent intake system and a good discharge speed.
- Aski 191301: is a pump that offers one horsepower as power capacity, admitting 200 liters per minute and a discharge speed of 3000 r/min, also ideal for domestic works or pumping small areas, since its working time is limited.
- Homdox 3566: this model has a flow rate of 3566GPH, with a power of one horsepower and a resistance capacity of 13500 liters per hour, which makes the working power higher, ideal for draining swimming pools, transferring water from tanks to domestic surfaces and areas with slightly higher demands.
- Karcher: this is a particular pump, as it offers the advantage of working for clean and dirty water, it offers a flow rate of 7000 liters per minute and a pumping pressure of 0.6 BAR, which makes it a medium sized pump that can work in areas a little larger than the domestic, being ideal for outdoors.
Learn how air compressors work through the following posts:
- How to choose an air compressor the right way.
- The components of a hydraulic press and how it works
- The centrifugal compressor features advantages and disadvantages
- Screw compressor operation
- What are hydraulic compressors used for?
- History of air compressors
I hope this information about water pumps will guide you to buy a pump that suits your needs, or if you are looking to change the one you already have, do it now better informed, because remember that the choice will depend on the need you have.