Pumping station with built-in ejector. Ejector pumping stations for home

Many owners of private houses or garden plots often think about arranging the system autonomous water supply. However, not everyone knows how best to do this.

1 How to choose the type of pump?

An autonomous water supply system can be installed in almost any private house and on any garden plot. The only problem in this case will be the depth at which the waters lie. If the water in a pre-prepared well is at a depth of seven meters, then there should not be any difficulties with its extraction. In this case, a pumping unit of absolutely any model is suitable.

The situation is quite different with those wells where the water is at a deeper level. In this case, only a pump with an external ejector can be used. An obstacle to the operation of an ejector water pump will be atmospheric pressure, the level of strength of the individual elements of the water pump itself with an ejector.

To carry out the process of raising water from a great depth, the so-called steam jet should be used. Vacuum pump or several times to increase the size or mass of a surface water pump with an external ejector. However, this can lead to the failure of the steam jet water pump.

2 The principle of operation of the ejector for the water pump

Ejector pumps have an extremely simple design. They consist of the following elements:

1. Nozzle.
2. Diffuser.
3. Mixer.
4. suction chamber.

ejector nozzle pumping device is a tube with a narrow end. The principle of operation of the ejector for a water pump is to instantly accelerate the water flow flowing from the nozzle. In accordance with the laws of physics, a water flow that has high speed, has the least impact on the atmosphere. Water from the nozzle enters the internal mixer, where it is separated along the boundaries. As a result of this separation, water from the chamber begins to flow into the mixer.

After that, the centrifugal flow of water is fed through the diffuser further through the pipes. That is, in the ejector of the water intake installation, the process of transferring energy from the medium with the highest speed to the medium with the lowest speed is carried out.

The ejector is part of the pipeline that runs from the well to the pump. That part of the water that was raised to the surface of the well, through certain time begins to flow back into the well, namely to the ejector, resulting in the formation of a circulation line.

Having escaped from the nozzle at high speed, the water takes with it part of the water from the well, thus providing additional discharge in the plumbing system. As a result, pumps use much less energy to lift water from depth.

Thanks to a special valve installed on the so-called circulation line, the process of adjusting the volume of water that is fed back to the intake system can be carried out, and thereby gives additional efficiency to the intake system.

Excess water that did not take part in the circulation process is transferred by ejector pumps to consumers, thus setting the productivity level of the entire ejector pumping station. This helps to get by with engines with the lowest power level, as well as a less massive water intake.

In addition, ejectors help to significantly facilitate the process of starting the pumping system, thanks to them, even a small volume of water can create sufficient vacuum in the plumbing system, thereby initiating the process of initial water intake so that the system does not work, as they say, idle.

2.1 The principle of operation of the ejector (video)

3 Device and types of ejector pumping stations

Ejectors on the water intake unit can be installed in 2 ways. The first implies that the ejector is one of the constituent elements of the design of the pumping station. In the second case, the ejector is an external node. The choice of a particular option will depend, first of all, on the requirements that apply to the water intake installation.

3.1 Integrated ejectors

This option implies that the creation of pressure for the ejector is carried out in the installation itself. Due to this, the dimensions of the pumping unit can be significantly reduced. Pumping stations with a built-in ejector are almost immune to the presence of various kinds of small particles in the water.

That is, there is no need to filter the water. This type of water intake installations is mainly used for taking water from a depth of more than eight and a half meters. Allows you to create pressure required power to provide a garden plot large sizes where water is used primarily for irrigation.

However, pumping stations with built-in ejectors have such a disadvantage as an increased noise level during operation. For this reason, it is not recommended to install this type of water intake in the immediate vicinity of a residential building.

It is best if such an installation is mounted in a separate utility room. Electrical engine for this type of pumping installation should be selected in such a way that it can provide necessary system water circulation.

3.2 External ejectors

When using an external ejector, an additional water collection tank must be installed separately from the water intake unit. In such a tank, the pressure necessary for the operation of the system and additional discharge will be created, which, in turn, will significantly reduce the degree of pressure exerted on pumping unit loads. The external ejector itself should be connected to the immersed part plumbing system.

To ensure the normal functioning of the external ejector in the well, it will be necessary to lay two pipes, however, this may impose certain restrictions on the allowable diameter. Given constructive solution, despite the fact that it reduces the efficiency of the water supply system by about thirty-five percent, it allows pumping water from a depth of up to fifty meters and significantly reduces the degree of noise during the operation of the pumping unit.

A water intake station with an external ejector can be located directly inside a private house. For example, in various kinds of basement-type rooms. In this case, the distance from the well can be from twenty to forty meters.

It has absolutely no effect on the degree of efficiency. This is what explains such a wide popularity of this type of water intake stations among the population. All equipment is located in one place, which significantly increases the operational period, greatly simplifies the process of implementing various kinds of preventive work and plumbing settings.

4 Connecting ejectors

If you use an internal ejector, that is, it is one of the constituent elements of the design of the water intake station, then the installation process of the system will practically not differ in any way from the installation of a water intake unit without an ejector.

In this case, it will be enough for you to just connect the water supply from the well to the suction hole, and then complete the process of arranging the pressure line with the appropriate equipment in the form of batteries, as well as other automatic devices necessary to ensure the functioning of the system.

If you are using an intake unit with an external ejector, or an intake unit in which the internal ejector must be fixed separately, then two more steps will be added to the connection procedure described above:

1. The first stage involves laying additional pipe, which is necessary for the circulation of water from the pressure line of the water intake to the inlet of the ejector.
2. At the second stage, the process of connecting a special pipe with a coarse filter and a return pipe to the suction hole of the water intake station is carried out.

If necessary, a special valve can be built into the water circulation line, which is intended to adjust the system. This will be beneficial if the water level in the well exceeds that for which the intake unit is designed. It is possible to reduce the power of pressure supplied to the ejector, thus increasing the power of pressure in the plumbing system.

Some water intake station devices have a pre-built valve to make this adjustment.

Indispensable without a pump country house or in the country, especially if you have an artificial pond or well. The choice of this equipment depends on many nuances, each model has its own characteristics, advantages and disadvantages. At the same time, you can familiarize yourself with the features of individual types of products in advance, which will greatly simplify the buying process. The self-priming surface pump deserves special attention.

About the main distinguishing feature The name of the product speaks for itself. It is easily operated on the surface of the earth, without requiring immersion in liquid. Water is pumped through hoses connected to the device - intake and supply. The first is the rise of the liquid from the source, and the second is the outflow.

The surface self-priming pump is widely used for pumping water from open sources(ponds, pools), shallow wells (up to 7 m), irrigation of agricultural plantations. He can also perform separate element pumping station and serve to pump water into the storage tank.

Using a surface pump

The material for the manufacture of such devices is cast iron, stainless steel or plastic. The latter is preferable because plastic models are light weight, good moisture resistance and resistance to corrosive processes. At the same time, their cost can be an order of magnitude higher than that of analogues made of cast iron and steel.

Device with plastic case

Advantages and disadvantages of surface pumps

The principle of operation, the material of manufacture, the permissible operating conditions - these and many other points determine the advantages and disadvantages of surface-type self-priming pumps.

The advantages of such devices for pumping water include:

• Ease of maintenance - cleaning, repair. The downhole model is sometimes not so easy to remove from the well to determine the failure.
• Mobility. The compact size and light weight of the products make it easy to change their location on the site. However, the device should not be too far away from the water source.
• Ease of installation. It is only necessary to connect the hoses and securely place the device on the ground.
• Relatively low price. For comparison: submersible models used at great depths have greater power, moisture resistance and strength. Due to this, their price can be 2-3 times higher than the price of surface pumps.
• The possibility of using them as part of pumping stations.

Pumping station based on a surface-type device

With these advantages, surface-type self-priming pumps also have a number of significant disadvantages.

• Small suction depth (up to 7 m). Equipping the product with an ejector will increase this figure.
• Small water pressure, which is enough for irrigation garden plot, but not always enough for high-quality water supply at home.
• Sensitivity to contaminants in water.
• Some models are too noisy.

How a self-priming pump works

According to the principle of operation, surface self-priming pumps are usually divided into centrifugal and vortex.

The principle of operation and features of a centrifugal device

The work of centrifugal models is based on the movement of the impeller (impeller) inside its housing and the creation of a centrifugal force that promotes water.

Scheme of operation of a centrifugal pump

Sequentially it looks like this:

• The body of the device is completely filled with water to displace air from it.
• When it is turned on, the movement of the impeller begins, a centrifugal force is created that pushes water to the outlet.
• At the same time, a vacuum is created in the zone of the intake hole, provoking the suction of a new volume of liquid.

Filling the working chamber with water before switching on the appliance

Please note: if there is one impeller, then they talk about a single-stage water movement system, if two or more - about a multi-stage one.

Centrifugal models are valued for their high efficiency, the ability to pump large volumes of water (important for home water supply), compact size and simplicity of the device. They are also less sensitive to contamination than their vortex counterparts.

The most significant drawback is the impossibility of operating the device with air. The impeller cannot generate suction force from the air in the chamber. Moreover, if an air lock forms in the "sleeve" of the pump, the process of pumping water may stop.

How does a surface-type vortex pump work?

Peripheral pumps are designed to work with lightly polluted water without abrasive particles that contribute to their rapid wear and breakdown. However, they are vastly superior to centrifugal models in that the suction force can be generated from a mixture of air and water or air alone.

These devices are much more suitable for irrigating land than for supplying water at home. At the same time, they can be successfully combined with centrifugal models, forming a multi-stage water pumping system.

As for the design of such a product, the rotating element is no longer an impeller, but an impeller - an impeller enclosed in a ring. During operation in the pump chamber, air is removed through the outlet pipe, and the water separated from it is forced out to the supply hose due to the movement of the impeller.

In this case, the effect of water recirculation is formed, causing a vacuum in the suction chamber. This ensures the inflow of a new volume of fluid. The ejector works on a similar principle.

Self-priming models with ejector

The ejector is a simple device that allows you to significantly increase the suction depth of the pump. His work is based on the separation of water flows, its recycling. Part of the water that rises from the source returns to the ejector and pours out at high speed through its tapering nozzle.

It enters the mixer, where it creates a vacuum that ensures the flow of liquid from the suction chamber. Then there is a standard movement of water through the device and its outflow through the supply hose.

The ejector can be built-in or external. In the presence of the first, the recirculation process takes place directly in the device, which makes it possible to maintain its compact dimensions. However, during operation of such a product, there is a lot of noise that prevents its operation in the house or its immediate vicinity. The best option placement of a pump with a built-in ejector - a separate building.

The built-in ejector allows you to increase the suction depth by only 3-5 meters. An external device increases this figure to 30-50 meters, but the efficiency of the pump decreases. It also requires the installation of an additional pipe for recirculation.

Video: the principle of operation of the ejector

Thus, a surface self-priming pump is quite capable of meeting domestic water needs. If the choice of the device, its connection to the pumping station or the installation of the ejector cause difficulties, you can always contact the specialists. Qualified assistance in this matter is the key to the durability of the pump and your peace of mind.

An ejector is a device in which kinetic energy is transferred from one medium moving at a higher speed to another.
The pump is an actuator that converts the mechanical energy of the engine (drive) into hydraulic energy of the fluid flow. The pump, driven by the engine, communicates with the tanks by two pipelines: suction (receiving) and discharge (outflow).
According to the principle of operation, marine pumps are divided into three groups: volumetric (displacement), vane and jet. Jet pumps have no moving parts and create a pressure difference using working environment: liquid, steam or gas supplied to a pump under pressure. These pumps include ejectors and injectors.
Jet pumps connected to the serviced object by a suction pipe are called ejectors. In ejectors, the working pressure is higher than the useful one, that is. Ejectors are divided into water - for drying, steam - for air suction and creating a vacuum in condensers, evaporators, etc.
Jet pumps connected to the serviced object by a discharge pipe are called injectors. Injectors have the opposite pressure ratio, that is, the useful pressure is higher than the working one. Injectors are steam jet pumps for supplying feed water to steam generators.
Figure 1 shows a water-jet water-draining ejector of the VEZH type.
The body 3 of the ejector, welded from sheet copper, has the shape of a diffuser with an angular suction pipe 7, the opening of which is closed with a cap 6 with a chain. On the left, a brass nozzle 2 is inserted into the body, in the form of a converging nozzle with a “storz” half-nut 1 for connecting a flexible hose through which working water is supplied to the ejector. To connect the outlet hose to the ejector, a half-nut of the shutter 4 is used, located at the outlet end of the discharge pipe 5. Such a connection ensures the operation of portable ejectors that are installed on the threads of deck bushings that communicate with compartments or holds requiring drainage by means of tubes.

Rice. 1 Water jet ejector type VESH

The ejector works as follows: working water is usually supplied from the fire main under pressure to the nozzle. From the outlet narrow section of the nozzle, water enters at high speed into the so-called mixing chamber, while the pressure decreases. Passing through the narrow section of the diffuser ("throat"), the water entrains air and creates a vacuum in the mixing chamber, which ensures the flow of liquid from the suction pipe 7. Due to friction and as a result of the exchange of impulses, the suction water is mixed, captured and moves along with the working one. The mixture enters the expanding part of the diffuser, where the kinetic energy (velocity) decreases and, as a result, the static pressure increases, which contributes to the injection of the liquid mixture through the nozzle 5 into the discharge pipeline and overboard. The flow of the ejector can be adjusted by screwing in or out of the nozzle.
Figure 2 shows a steam jet injector used to feed steam boilers.
Working steam from the boiler is supplied to the branch pipe 1 of the injector. The valve 2 is opened by turning the handle 10. The steam passing through the steam nozzle 9 acquires a greater speed due to the pressure reduction. At the same time, it entrains air particles with it and creates a vacuum that ensures that feed water enters the pump through pipe 3. The incoming water, mixing with steam, condenses it. Reducing the volume increases the vacuum in the mixing chamber 4, which ensures continuous suction of feed water into the injector. A mixture of condensate and water flows through the diffuser 6 to the non-return valve 5, which covers the inlet to the boiler feed pipe. As a result of the transfer of part of the kinetic energy of the mixture into pressure, the valve opens and hot water enters the steam boiler.

Rice. 2 Steam jet injector

If the discharge pressure in front of valve 5 is less than the pressure in the boiler, the valve will not open. In this case, the water mixture in the chamber 7 will squeeze the valve and through the hole 8 will pour out.
When the pressure becomes sufficient to open the valve 5, the pressure in the chamber 7 will decrease and the valve will close under the action of the spring, preventing the flow of water to the outside. Steam injectors have a simple device and provide hot feed water to the steam boiler, but they are inefficient and uneconomical.
The absence of moving parts in the jet pump ensures the pumping of liquids with various mechanical inclusions, which is used on ships of the fishing industry for pumping pulp, that is, a mixture of fish with water by airlift pumps or hydraulic elevators. Unlike centrifugal fish pumps, airlifts do not damage the fish when pumping the pulp. Compressed air is used as a working medium in airlifts, which, mixing with water, creates a reduced density for it.
The main disadvantage of jet pumps is their low efficiency, which usually does not exceed that of airlifts.

Ejector - what is it? This question is often asked by owners. country houses and dachas in the process of arranging an autonomous water supply system. The source of water in such a system, as a rule, is a pre-drilled well or well, the liquid from which must not only be raised to the surface, but also transported through a pipeline. To solve such problems, a whole technical complex is used, consisting of a pump, a set of sensors, filters and a water ejector, installed if the liquid from the source must be pumped out from a depth exceeding ten meters.

When do you need an ejector?

Before dealing with the question of what an ejector is, you should find out why you need a pumping station equipped with it. In essence, an ejector (or ejector pump) is a device in which the energy of motion of one medium moving at high speed is transferred to another medium. Thus, at an ejector pumping station, the principle of operation is based on Bernoulli's law: if a reduced pressure of one medium is created in the tapering section of the pipeline, this will cause another medium to be sucked into the formed flow and transferred from the suction point.

Everyone is well aware that the greater the depth of the source, the harder it is to raise water from it to the surface. As a rule, if the depth of the source is more than seven meters, then a conventional surface pump can hardly perform its functions. Of course, to solve such a problem, you can use a more productive submersible pump, but it is better to go the other way and purchase an ejector for a surface-type pumping station, significantly improving the characteristics of the equipment used.

Due to the use of a pumping station with an ejector, the pressure of the liquid in the main pipeline increases, while the energy of the fast flow of the liquid medium flowing through its separate branch is used. Ejectors, as a rule, work in a set with jet-type pumps - water-jet, liquid-mercury, mercury vapor and oil-steam.

An ejector for a pumping station is especially relevant if it is necessary to increase the capacity of an already installed or planned installation of a station with a surface pump. In such cases, the ejector installation allows you to increase the depth of water intake from the reservoir up to 20-40 meters.

Overview and operation of a pumping station with an external ejector

Types of ejector devices

In my own way design and principle of operation, jet pumps can fall into one of the following categories.

Steam

With the help of such ejector devices, gaseous media are pumped out of confined spaces, and a rarefied state of air is also maintained. Devices operating on this principle have a wide range of applications.

Steam jet

In such devices, the energy of a steam jet is used to suck gaseous or liquid media from a closed space. The principle of operation of the ejector of this type consists in the fact that steam flying out of the installation nozzle at high speed entrains the transported medium leaving through the annular channel located around the nozzle. Ejector pumping stations of this type are used mainly for the rapid pumping of water from the premises of ships for various purposes.

Gas

Stations with an ejector of this type, the principle of operation of which is based on the fact that the compression of the gaseous medium, which is initially under low pressure, occurs due to high-pressure gases, are used in gas industry. The described process takes place in the mixing chamber, from where the flow of the pumped medium is directed to the diffuser, where it slows down, and hence the pressure increases.

Design features and principle of operation

The design elements of a remote ejector for a pump are:

• a chamber into which the pumped medium is sucked;
• mixing unit;
• diffuser;
• nozzle, transverse section which narrows.

How does any ejector work? As mentioned above, such a device operates according to the Bernoulli principle: if the flow velocity of a liquid or gaseous medium increases, then an area characterized by low pressure is formed around it, which contributes to the rarefaction effect.

So, the principle of operation of a pumping station equipped with an ejector device is as follows:

• The liquid medium pumped by the ejector unit enters the latter through a nozzle whose cross section is smaller than the diameter of the inlet line.
• Passing into the mixer chamber through a nozzle with a decreasing diameter, the flow of the liquid medium acquires a noticeable acceleration, which contributes to the formation of a region with reduced pressure in such a chamber.
• Due to the rarefaction effect in the ejector mixer, a liquid medium at a higher pressure is sucked into the chamber.

If you decide to equip a pumping station with a device such as an ejector, keep in mind that the pumped liquid medium does not enter it from a well or well, but from a pump. The ejector itself is located in such a way that part of the liquid that was pumped out of the well or well by means of a pump returns to the mixer chamber through a tapering nozzle. The kinetic energy of the liquid flow entering the mixer chamber of the ejector through its nozzle is transferred to the mass of the liquid medium sucked by the pump from the well or well, thereby ensuring a constant acceleration of its movement along the inlet line. Part of the fluid flow, which is pumped out by a pumping station with an ejector, enters the recirculation pipe, and the rest enters the water supply system serviced by such a station.

Once you understand how a pumping station equipped with an ejector works, you will realize that it requires less energy to raise water to the surface and transport it through a pipeline. Thus, not only the efficiency of using pumping equipment is increased, but also the depth from which the liquid medium can be pumped out increases. In addition, when using an ejector that sucks up liquid on its own, the pump is protected from running dry.

The device of a pumping station with an ejector provides for the presence in its equipment of a crane installed on the recirculation pipe. With the help of such a valve, which regulates the flow of fluid entering the ejector nozzle, it is possible to control the operation this device.

Types of ejectors at the installation site

When purchasing an ejector to equip a pumping station, keep in mind that such a device can be built-in and external. The device and principle of operation of these two types of ejectors are practically the same, the differences are only in the place of their installation. Built-in ejectors can be placed in the inside of the pump housing, or mounted in close proximity to it. The built-in ejection pump has a number of advantages, which include:

• minimum space required for installation;
• good protection of the ejector from contamination;
• no need to install additional filters that protect the ejector from insoluble inclusions contained in the pumped liquid.

Meanwhile, it should be borne in mind that high efficiency built-in ejectors are demonstrated if they are used to pump water from sources of shallow depth - up to 10 meters. Another significant disadvantage of pumping stations with built-in ejectors is that they emit quite a lot of noise during their operation, so it is recommended to locate them in a separate room or in a caisson of an aquifer. It should also be borne in mind that this type of ejector device involves the use of a more powerful electric motor that drives the pumping unit itself.

A remote (or external) ejector, as its name implies, is installed at a certain distance from the pump, and it can be quite large and reach up to fifty meters. Remote-type ejectors, as a rule, are placed directly in the well and connected to the system through a recirculation pipe. A pumping station with an external ejector also requires the use of a separate storage tank. This tank is necessary in order to ensure the constant availability of water for recirculation. The presence of such a tank, in addition, allows you to reduce the load on the pump with a remote ejector, and reduce the amount of energy required for its operation.

The use of remote-type ejectors, the efficiency of which is somewhat lower than that of built-in devices, makes it possible to pump out a liquid medium from wells of considerable depth. In addition, if you make a pumping station with an external ejector, then it can not be placed in the immediate vicinity of the well, but mounted at a distance from the source of water intake, which can be from 20 to 40 meters. At the same time, it is important that the location of pumping equipment at such a considerable distance from the well will not affect the efficiency of its operation.

Production of an ejector and its connection to pumping equipment

Having figured out what an ejector is and having studied the principle of its operation, you will understand that you can make this simple device with your own hands. Why make an ejector with your own hands, if it can be purchased without any problems? It's all about saving. Finding drawings according to which you can make such a device yourself is not a problem, and for its manufacture you will not need expensive expendable materials and sophisticated equipment.

How to make an ejector and connect it to a pump? For this purpose, you need to prepare the following components:

• tee with internal thread;
• Union;
• couplings, elbows and other fitting elements.

An ejector is a device that is designed to transfer kinetic energy from one medium moving at a higher speed to another. This device is based on the Bernoulli principle. This means that the unit is able to create a reduced pressure in the narrowing section of one medium, which, in turn, will cause suction into the flow of another medium. Thus, it is transferred, and then removed from the place of absorption of the first medium.

General information about the fixture

The ejector is small but very efficient device which works in tandem with the pump. If we talk about water, then, of course, a water pump is used, but it can also work in tandem with steam, steam-oil, steam-mercury, and liquid-mercury pumps.

The use of this equipment is advisable if the aquifer lies quite deep. In such situations, it most often happens that the usual pump equipment fails to supply the house with water or supplies too much weak pressure. The ejector will help solve this problem.

Kinds

An ejector is a fairly common equipment, and therefore there are several different types of this device:

• The first is steam. It is intended for exhausting gases and confined spaces, as well as for maintaining vacuum in these spaces. The use of these units is common in various technical industries.
• The second is a steam jet. This apparatus uses the energy of a steam jet, with the help of which it is able to suck liquid, steam or gas from an enclosed space. The steam that exits the nozzle at high speed entails the moving substance. Most often used on various ships and ships for quick suction of water.
• A gas ejector is a device whose principle of operation is based on the fact that overpressure high-pressure gases is used to compress low-pressure gases.

Water suction ejector

If we talk about the extraction of water, then the ejector for the water pump is most often used. The thing is that if after the water is lower than seven meters, then a conventional water pump will cope with great difficulty. Of course, you can immediately buy a submersible pump, the performance of which is much higher, but it is expensive. But with the help of an ejector, you can increase the power of an existing unit.

It should be noted that the design of this device is quite simple. Production homemade device also remains a very real challenge. But for this you will have to work hard on the drawings for the ejector. The basic principle of operation of this simple apparatus is that it imparts additional acceleration to the flow of water, which leads to an increase in the supply of liquid per unit of time. In other words, the task of the unit is to increase the pressure of water.

Elements

Installing an ejector will lead to the fact that the optimal level of water intake will greatly increase. The indicators will be approximately equal from 20 to 40 meters in depth. Another of the advantages of this particular device is that its operation requires much less electricity than, for example, a more efficient pump would require.

The pump ejector itself consists of such parts as:

• suction chamber;
• diffuser;
• narrowed nozzle.

Principle of operation

The principle of operation of the ejector is completely based on the Bernoulli principle. This statement says that if you increase the speed of any flow, then an area with low pressure will always form around it. Because of this, such an effect as discharge is achieved. The liquid itself will pass through the nozzle. The diameter of this part is always smaller than the dimensions of the rest of the structure.

It is important to understand here that even a slight narrowing will significantly accelerate the flow of incoming water. Next, the water will enter the mixer chamber, where it will create a reduced pressure. Due to the occurrence of this process, it will occur that a liquid will enter the mixer through the suction chamber, the pressure of which will be much higher. This is the principle of the ejector, if we describe it briefly.

It is important to note here that water should not enter the device from a direct source, but from the pump itself. In other words, the unit must be mounted in such a way that some of the water that rises with the pump remains in the ejector itself, passing through the nozzle. This is necessary in order to be able to supply constant kinetic energy to the mass of liquid that needs to be lifted.

Thanks to the work in this way, a constant acceleration of the flow of matter will be maintained. Of the advantages, it can be distinguished that the use of an ejector for a pump will save a large number of electricity, as the station will not operate at its limit.

Pump device type

Depending on the location, it can be built-in or remote type. There is no huge structural difference between the installation sites, however, some small differences will still make themselves felt, since the installation of the station itself will change slightly, as well as its performance. Of course, it is clear from the name that the built-in ejectors are installed inside the station itself or in its immediate vicinity.

This type of unit is good because you do not have to allocate extra bed to install it. The installation of the ejector itself will also not have to be carried out, since it is already built in, only the station itself will need to be installed. Another advantage of such a device is that it will be very well protected from various kinds of pollution. The disadvantage is that this type of device will create a lot of noise.

Model comparison

Remote equipment will be somewhat more difficult to install and you will have to allocate a separate place for its location, however, the amount of noise, for example, will decrease significantly. But there are other shortcomings here. Remote models are able to provide efficient work only at depths up to 10 meters. Built-in models are initially designed for not too deep sources, but the advantage is that they create a fairly powerful pressure, which leads to more efficient use liquids.

The created jet is quite enough not only for domestic needs, but also for operations such as watering, for example. Enhanced Level Noise from the built-in model is one of the most significant issues to take care of. Most often, it is solved by installing it together with the ejector in a separate building or in a well caisson. You will also have to take care of a more powerful electric motor for such stations.

Connection

If we talk about connecting a remote ejector, you will have to perform the following operations:

• Laying an additional pipe. This object is necessary in order to ensure the circulation of water from the pressure line to the water intake.
• The second step is to connect a special branch pipe to the suction port of the water intake station.

But connecting the built-in unit will not differ in any way from the usual process of installing a pumping station. Everything necessary procedures by connection the right pipes or spigots are carried out at the factory.