Contactless washing technology and the use of a foam nozzle. Do-it-yourself foam tablet. Replacing the mesh in the foam nozzle

The Karcher foam nozzle is included in the package of high-pressure cleaners for contactless washing various surfaces. This unit sprays soap suds on dirt, the substances in this foam actively break down stains and make contactless washing faster and more productive.

Application of foam nozzles Karcher

Foam nozzles are used in a contactless sink. This action helps to clean surfaces without contact with them, that is, without unnecessary mechanical influences on the surface. The advantage of this type of washing is that the possibility of mechanical damage during the washing process. This type of washing is most widely used for cars. Touchless washing is used both in commercial enterprises and in everyday life. Pressure washing with foam nozzles significantly extends the life of the bodywork. This also applies to the paintwork itself, and other types of protective layers - anti-corrosion, polishing, etc.

The cleaning process and its duration depend on the level of surface contamination. If it is small, then the whole process will take 3-10 minutes, but if the pollution is global and complex, then pressure washing is used first, and then contactless. For foam nozzles, various chemicals are used that correspond to the type of surface to be washed.

Specifications of foam nozzles

The most important purpose of the foam nozzle is good foam, which will linger on the surface for the period necessary to remove dirt. Low-quality or cheap nozzles do not create such foam, the product of their activity is a liquid emulsion that quickly flows down the body. As a result, it becomes necessary to re-apply foam, which leads to overspending. detergent. To avoid this problem, it is necessary to choose Karcher foam nozzles with a pressure of at least 70 bar and the correct fitting. The fitting for the nozzle must only be original, because the quality of the foam produced by the device depends on this part.

The material of a high-quality foam nozzle is a nozzle made of of stainless steel, a nozzle from brass, a tank from dense and high-quality plastic. When choosing a foam nozzle, you should pay attention to its compliance with the existing model of the pressure washer, as the nozzle is used in tandem with it. For each type of nozzle, this information is always indicated by the seller.

Instructions for use of the foam nozzle Karcher

Another advantage of foam nozzles is their ease of use. For example, a device such as a foam generator will require certain skills and knowledge, it must be able to configure it, as well as know everything about correct operation device. The foam nozzle does not require such conditions.

To work with the nozzle, first of all, the tank is unscrewed to fill it with detergents. Means are selected depending on the place of use of the foam nozzle. The concentration of chemicals is also selected based on the scope of application, since the flow of foam is then easily regulated in the nozzle itself. For example, if you need to wash 1 or 2 cars, then the concentration is small, so much that it is enough for this particular surface area. When using the nozzle in industrial purposes or for a large amount of work, the concentration of chemicals in it is maximized, while reducing the flow of foam flow using a regulator.

The process of using a foam nozzle on an example professional equipment Karcher:

The foam nozzle is put on the gun and fastened with a union nut with internal thread on the nozzle. This nut is screwed onto the corresponding external thread on the gun.

To fill in the detergent, the tank of the nozzle is unscrewed counterclockwise, the necessary substances are poured into it, the tank is screwed back. When removing the tank, it is necessary to carry out all the manipulations very carefully, since the base consists of brass, and the tank itself is made of plastic. If handled incorrectly, the thread on the plastic container will be broken, the tank will be damaged, and the resulting chips will clog the injector and disable the entire device.

To adjust the required amount of foam produced, turn the knob. This function changes the liquid supplied from the device to a thick foam cap or a very liquid soap solution, depending on what consistency of foam is needed at the moment.

The width of the jet and the range of its flight are also adjustable. To do this, use the spray regulator.
After adjusting all indicators and pouring liquid into the tank, the washing process begins. To do this, the foam is sprayed onto the contaminated surface and left for the required time. On average, for small dirt, such as dust settled on the car body, 2-5 minutes are enough.
After holding the required time, the foam is washed off with a jet of water from a Karcher high-pressure apparatus.

Today it has become a rarity in the city to see a person manually washing his car on the side of the road. Car washes have firmly entered the life and consciousness of citizens and are in constant demand, regardless of the brand of cars.

Contactless car wash with foam nozzle

Modern ways of washing cars

portal sink;
manual washing;
tunnel washing;
contactless car wash.

portal car wash is a special washing complex-portal, consisting of huge rotating vertical and horizontal brushes arranged in a U-shape. They move along the platform with the car and, when jets of water are supplied, they wash with the help of foaming detergents. Gantry wash height for cars is 2-2.7 m, and for trucks - 4.2 - 4.5 m. Available fans allow you to speed up the process of drying the car after washing.

Portal car wash Karcher

tunnel washing is a sequence of washing and cleaning devices that the car gradually passes through. The devices are equipped with rotating vertical and horizontal brushes designed to clean various parts of the car, including underbody and wheels. The complex includes devices for applying detergents, polishing and drying.

tunnel car wash

The length of the tunnel complex can reach 45 meters. A vehicle is allowed to pass through the entire tunnel only once. In one pass, all procedures for cleaning, washing, polishing and drying the car are carried out. The driver sitting inside the car, the brushes rotating at a frantic speed can be confusing. It may seem that they will rip off not only the dirt from the car, but all the paint.

hand washing Now it has become widespread, thanks to the simplicity of organization and the minimum cost of its implementation. In manual washing, dirt is removed with soap solution or special shampoo, sponges and ordinary rags. Washers are mostly students and young students.

If you look closely, you can see minor scratches on the paintwork from hand washing.

With a conscientious attitude to their work on the part of the washers, the car after washing looks clean and shiny. However, if the washers save on consumable and use the same sponges and brushes repeatedly, the dirt and sand accumulated in them can compact, turn into emery and scratch the varnished surfaces car. Therefore, after washing the car at a car wash, it will not be out of place to take a closer look at the shiny surface of the car body and glass.

Contactless car wash is gaining more and more recognition among car enthusiasts due to its main advantage that the cleaning process does not use material rubbing against the surface of the car. Here, not a mechanical effect on the contaminated surface is applied, but the chemical action of the cleaning solution.

With a touchless wash, no damage to the paintwork is noticeable

Advantages and disadvantages of contactless car wash

The principle of operation of a contactless car wash is based on the dissolution of dirt with a highly alkaline solution in a foamy state and supplied to the treated surface under pressure. Due to the dynamic pressure and chemical reaction ensured perfect cleanliness and the safety of the car's paintwork.

Contactless washing is that the dirt is dissolved by active foam, it is also called contactless foam, and then washed off with water. Thus, there is no contact of the brush or rag with the paintwork of the car body, and, therefore, it is possible to avoid scratches and other damage to the paintwork of the body.

The duration of cleaning is determined by the condition of the vehicle. If it has slight contamination, then cleaning will take no more than 3-10 minutes. With large and multi-layer contamination, cleaning may take longer and take up to 20 minutes, since in this case cleaning is carried out in two stages. For the formation of foam high content alkalis, special car shampoos and chemicals are used to provide quick and effective cleaning.

Currently on the market there are a large number of various mini sinks

The following equipment and materials are required for the production of car cleaning by a non-contact method:

a foam nozzle that forms foam (otherwise called a “foaming agent”);
car shampoo for creating active foam;
a high-pressure cleaner or "mini-washer" is produced by many companies and can have different designs and different meaning operating pressure, which does not significantly affect the efficiency and final result of cleaning;
clean water, it is good if the water is warm.

Foam nozzle for touchless washing or foam generator

It looks like an Italian foam nozzle for a contactless wash disassembled

There are two main types of touchless car wash:

use of a foam generator;
use of a foam nozzle for contactless washing.

What is the difference between a foam generator and a foam nozzle and which is better?

more expensive - its cost is about 5 - 10 times the cost of a foam nozzle.
The foam generator requires a compressor.
The foam generator is more suitable for commercial purposes, it is not advisable to use it for home use.

Both of these devices are not included in the minisink kit and must be purchased separately. Without them, it is impossible to make a contactless car wash, because it is they who produce foam.

Here the foam nozzle is attached to the gun

Consider the principle of foam formation using an Italian foam nozzle for car shampoo:

a special car shampoo is poured into the nozzle and water is added in the right proportion. The ratio of shampoo and water is approximately 1 volume of car shampoo 2.5-3 volumes of water;
the nozzle is connected to the pistol sprinkler of the minisink;
when the high pressure mini washer is activated, it creates a high pressure air stream in the gun, which sucks the shampoo out of the tank. The shampoo is mixed with water and this emulsion at the outlet of the gun breaks into a “tablet”, which causes splashing onto the surface of the machine. "Pill" is a pressed metal mesh.

For home environments, using a high pressure washer (HPA) foam nozzle is the best choice.

It looks like a foam generator for which you need a compressor

The foam generator is a large container from 25 to 100 liters, where a reagent or car shampoo is poured and water is added in the required proportion in accordance with the instructions for using the reagent or shampoo. A special generator gun can have from one to four foam nozzles. The pressure of the air supplied to the nozzles of the gun from the compressor must be more than 6 bar. The use of several nozzles allows you to increase the productivity of the foaming machine and speed up the contactless cleaning process. Foam generators are more effective in commercial car washes where cleaning is done in parallel on several jobs and large volumes. A compressor is required for a foam generator.

The foam nozzle for contactless washing is completed with its own special container for diluting shampoos for foam in the required proportions. The proportions of water and shampoo may vary depending on the water used and how dirty the car is. detailed information the ratio of the components of the solution is given in the instructions for use of the car shampoo.

Note: It is important not to confuse and pour the car shampoo into the container for the nozzle, and not into the tank of the mini washer and do not feed the solution into the mini washer through the suction hose. Such actions will lead to the failure of the miniwash. Foam nozzles are much simpler in design and application than foam generators. In addition, unlike foam generators, they do not require any additional equipment in their operation and, moreover, they do not need to be adjusted to a certain compressor pressure.

Foam nozzles are produced by the same companies that manufacture mini sinks. Each company makes them differently. Italian-made foam nozzles for shampoo are considered the best. They are suitable for almost all types of mini-washers, in particular for Karcher. In terms of production quality and foaming density, they are also considered the best nozzles. Absolutely identical in design and material used, Italian foam nozzles are produced by two different companies, PA and Idrobase.

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Video: Foam nozzle LS-3 disassembly to screw

The set of Italian foam nozzle for touchless washing includes:

one liter plastic bottle;
suction tube;
foam sprayer.

Assembling a penny is not difficult even for a child:

a brass foam sprayer with plastic regulators is removed from the box;
a suction tube is put on the fitting at the bottom of the sprayer;
into a one-liter plastic bottle foam shampoo is poured, and a bottle of car shampoo is screwed to the fitting cap with a tube installed. The concentration of shampoo is selected in accordance with the instructions for its use.

In principle, after this, the foam nozzle for washing is ready for use and can be used. But the sprayer has two plastic adjustment knobs:

the top rotary knob for supplying car shampoo to the mixing chamber of the sprayer is designed to adjust the density of the foam at the outlet. It is a micrometric screw with a jet, when tightened, the fitting hole decreases. Full overlap of the hole is not provided;
The front cylindrical foam jet shaper is a duckbill type flow distributor that allows you to convert a simple jet into a vertical fan with an opening angle of up to 40 degrees, which regulates the amount of foam.

The plastic bottle of the nozzle is made of highly resistant to chemicals material with high mechanical strength.

Video: Test. Foam nozzle for Karcher from China Foam Lance

Contactless car wash procedure

The whole process is as follows:

the body is doused with a jet of water from with great pressure. Wetting and churning of dirt occurs;
a means for contactless washing is being prepared in accordance with the instructions;
the mini-wash is turned on and the entire body is poured with foam from the bottom up;
an exposure is given for one to two minutes so that the active substance corrodes the dirt. The foam must not be allowed to dry out, which will lead to the formation of hard-to-remove stains;
foam is washed off with water;
body is dried. For faster drying, the use of wax mixtures is allowed, which is also done using a mini-wash.

If you are doing a touchless car wash yourself, then you need to consider the following features:

To avoid plaque, the body after completion of work must be wiped with a soft cloth;
prevent the foam from drying out, especially on the car roof. When dried, stains remain that can be removed with a polish;
so that the active reagent does not dry out quickly, the body must first be well cooled with water. It also follows from this that it is not desirable to apply active foam to a hood heated in the sun;
it is not recommended to increase the concentration of the shampoo beyond the limits indicated in the instructions, since too active foam can change the tone of the paintwork. For the same reason, you should refrain from using active foam when washing new cars, on which the paintwork has not yet settled after painting. Do not forget that the composition of the foam contains active potent additives.
after using the foam nozzle, you need to pass through it clean water so that the foam tablet inside the sprayer does not become clogged with dried foam. The fact is that the tablet consists of a metal mesh, if it is not washed, the foam on the mesh dries out and the mesh becomes clogged.

Washing the pen is very simple:

a one-liter bottle is unscrewed from the foam sprayer;
the foam sprayer is connected to the minisink through a gun;
the miniwash is turned on and the water washes the sprayer with the tablet.

The safest method for the paintwork of a car body is a non-contact washing method using a foam generator (we also call it a foam generator). The essence of this method is to apply a chemical detergent on the surface of the body in the form of fine foam. After application, it softens dirt and dust, then it remains to wash everything off with a stream of water. with paintwork (cloth, brush, etc.) eliminates damage surface layers varnish, that is, the formation of the so-called "cobweb" is completely excluded. Therefore, this method of car washing is now more priority and advanced.

The effectiveness of washing in many ways - the higher its density, the better the cleaning properties, less water consumption and chemicals. And the foam gives just a foam generator. Therefore, the main task of the foam generator is to obtain finely dispersed dense foam, as well as its uniform distribution over the surface of the car body.

Foam generator design

Structurally, the foam generator is very similar to a conventional garden sprayer, circuit diagram they are practically the same. But there is one significant nuance - penogen is equipment operating under high pressure.

The main components of this equipment are:

Cylinder (the volume is different - from 25 to 100 liters).
Mixer.
Gun.
Connecting hose.

Large equipment, with a large capacity cylinder, can be mounted on a transport trolley to ensure easy movement.

Since the equipment operates under high pressure, the cylinders are made of stainless or ordinary steel, but with a mandatory coating with anti-corrosion agents. In some factory models, a measuring ruler is installed on the cylinder, which allows you to control the flow rate and refuel in a timely manner.

Penogen cannot work independently, since a compressed air supply is required. For this, a fitting is provided on the cylinder for connecting the compressor. Typically, the operating pressure for the foam generator is 5-6 bar. To control the pressure on the tank, a pressure gauge is installed, the pressure is adjusted by the pressure regulator available in the design.

foam tablet

The main element of the mixer is the so-called foaming tablet. In reality, it is a fine mesh, folded in several layers and made of corrosion-resistant wire. It is installed in a housing mounted on a cylinder. And it is to him that the supply hose is connected. This tablet provides a breakdown of the primary foam supplied to it, into a finely dispersed high-density fraction.

The principle of operation of the foam generator

Do-it-yourself foam generator

The principle of operation of the foam generator is very simple:

The washer fills the cylinder with a solution of water and a foaming agent (detergent). Then the neck is tightly closed, which ensures the tightness of the container.
The compressor is connected and air is pumped up to the required pressure.
When the gun valve is opened, the air begins to squeeze out the solution through the jet, where the primary foaming occurs.
Moving at high speed, the foamed solution hits the grid of the foaming tablet and, passing through it, is separated, which is accompanied by the formation of fine foam.
The finished foam is fed to the gun and then through this nozzle to the surface of the body.
If necessary, the washer can adjust the feed on the gun (make the spray front wider, increase the speed of the jet).

It is noteworthy that another equipment for contactless washing, the sprayer, works approximately according to this principle. But unlike the foam generator, at the outlet of the gun, it forms an emulsion, in which the washing effect is lower than that of foam.

The difference between the two comes down to the different application guns used. An emulsion is a slightly different state of a liquid than foam, so a nozzle with an enlarged opening is needed to spray it. In addition, the sprayer cannot adjust the emulsion supply parameters, that is, there are no adjusting elements on the gun. These nuances will help to easily distinguish the foam generator from the sprayer.

The main advantages of the foam generator are:

economy of detergent consumption;
the resulting foam has an excellent washing function;
the ability to adjust the flow of the jet;

There are two main disadvantages of this equipment - large dimensions and the need for a compressor. Of these qualities, the foam generator is considered equipment for not very suitable for home use.

Foam kit as a kind of foam generator

IN garage conditions it is better to use a foam kit - a variation of equipment for a contactless car wash.

The gun with a nozzle for a sink. Connects via a hose to a pressure washer

This equipment works a little differently. It also has a capacity, but it is much smaller in volume than the foam generator - only 1 liter. Also, its design includes a foaming agent, which immediately plays the role of a gun for application. But unlike foam, the foam set does not work from a compressor, it is a nozzle for high pressure washers.

A container with a foaming agent, otherwise called a foam nozzle for contactless washing

Foam nozzle diagram

The foam kit works like this:

It is put on the water supply hose from the pressure washer.
After the washing is switched on, high-pressure water is supplied to the foaming agent, and from there to a container filled with detergent, where primary foaming occurs.
The solution obtained in the tank is squeezed out by the incoming water again into the foaming agent, where it passes through the foaming tablet.
At the exit from the tablet, finely dispersed foam is formed, which is fed through the socket to the surface of the body.

For ease of use, extension cords (spears) of different lengths can be connected to the foam concentrate to ensure that foam is applied to any surface of the car, including the roof and bottom.

The jet obtained at the outlet of the foam set can also be regulated using a valve installed on the foaming agent.

The foam set is different:

small overall dimensions;
output foam of good quality;
ease of refilling (no water is required to create a solution);

But without a high-pressure washer, the foam kit will not be able to work.

Due to the powerful jet output, the detergent consumption of such equipment is slightly higher than that of foam. In general, this is quite an acceptable option for a contactless car wash at home. Yes, and the foam kit is much cheaper than the foam generator.

How to make a foam generator for washing yourself

Complete foam generator

Considering the design of both types of equipment, you can see that their main component is a foaming tablet, which can be bought separately. This means that it is quite possible to make a foam generator with your own hands.

The easiest way to make it is to take a regular garden sprayer as a basis and redo it a little. At the beginning it was mentioned that the foam generator and the sprayer are structurally similar, and this fact is often used when creating homemade foam.

Foam tablet assembly

sprayer (volume may be different);
two drives ½ inch and nuts for them;
check valve;
air fitting;
foaming tablet and adapter for it;
metal tube.

With all this, you can start reworking:

We cut off the pressure relief valve and the fitting for connecting the hose from the sprayer.
We insert the spurs into the holes obtained and fix them with nuts on both sides and using gaskets.
On one of the drives we install a tube (so that it almost reaches the bottom of the container), a check valve and an air fitting.
On the second drive, we wind a foaming tablet through the adapter.
The sprayer's manual pressure pump must be completely shut off, as it will not be needed and will only act as a reservoir cap.

Video: Do-it-yourself foam generator

It remains only to connect the hose to the outlet fitting of the tablet, on the other end of which put a garden spray gun. On this, the product can be considered ready.

It is not as convenient to work with it as with factory equipment, but it is quite acceptable. To wash your car:

fill the container cleaning solution(by 2/3);
connect the compressor and pump air into the cylinder (it is important to monitor the pressure and not exceed the allowable limits);
after opening the sprayer valve, the air will squeeze out the solution, push it through the tablet, and at the outlet of the gun we will get a foam of quite acceptable quality;

Of the inconveniences of a homemade foam generator, one can note the need for periodic pumping up of pressure, since the homemade product is not equipped with a regulator, as well as the inability to adjust the outgoing jet.

But the described design can always be improved by installing additional equipment in order to eliminate the shortcomings and increase the convenience of working with the foam generator.

Every car owner must visit a car wash. Water procedures help support vehicle clean, and special products that are applied during washing create an additional barrier to dirt and protect the paintwork of the body. For high-quality cleaning, a thick active foam is used, obtained by foaming in a special device. Some motorists use self-made foam generators when washing.

Benefits of using a car wash foam generator

The foam generator is sold in a store that sells equipment for professional car washes. The price of a purchased foam generator is from 10 thousand. And if you take a branded device, you will have to pay twice as much. Such costs are not affordable for everyone. Therefore, below is a small instruction on how to make a foam generator yourself and spend only 500 to 2 thousand rubles on its manufacture. In addition to saving Money, owner homemade generator receives the following benefits:

saving time - washing the car with active foam is faster, by about 10-15 minutes;
detergent is used more efficiently and economically;
active foam eliminates the use of a sponge, which helps protect the paintwork from mechanical stress;
The foam generator allows you to thoroughly wash hard-to-reach places.

We assemble with our own hands: a drawing diagram and instructions for manufacturing

To understand the principle of operation of the foam generator, a diagram is placed below. Water is poured into the container and detergent concentrate is added. The air from the compressor is supplied through stop valve. A manometer must be used to control the pressure in the tank. The output is a mixture of water and detergent. It passes through the foam tablet, which produces a dense active foam.

A simple and understandable foam generator circuit helps to understand the principle of operation of the device

What you need for assembly

For self-manufacturing generator will need:

Capacity.
Pressure gauge.
1 shut-off valve (it only allows air to flow in one direction).
1 tap (they regulate the supply of finished foam).
Metal tube.
Reinforced hoses that can withstand a pressure of 6-8 atmospheres.
Metal clamps for reliable connection of hoses and fittings.
Foam tablet.

First of all, you need to decide on the capacity. The main requirement is the ability to withstand a pressure of 5–6 atmospheres. If there is an opportunity to welding work, then for the generator you can use a receiver from a truck or an old compressor. Weld on top of the body 2 fittings one and a half inches and a filler neck. The optimal volume is 20-30 liters, this is enough for personal use.

If an old water heater is lying around in the garage or shed, then it can be used to create a foam generator. In this case, welding work is not needed.

How to make a foam generator without welding: video

won't be needed. How to do it, watch the video: https://youtu.be/yF8xmbzRuBw

Homemade unit from an old sprayer

In the household of every summer resident there is always an old sprayer, which is a pity to throw away. With a little upgrade and using the blueprint attached above, it's easy to turn it into a foam generator. Getting Started:

Remember that the body of the sprayer is able to withstand a pressure of 4-5 atmospheres. Do not overdo it, control the pressure on the pressure gauge.

We buy a foam tablet in a store or make it ourselves. The main element of the tablet is a metal mesh. It is easy to make from ordinary metal brush for dishes. It is sold at any hardware store.

Using a homemade device: highlights

Pour water through the neck to ⅔ of the total volume of the container and add detergent concentrate in the amount indicated on the package. Usually it is 10-20 g per 1 liter of water. We securely close the neck and the valve at the outlet. We supply compressed air from the compressor to the inlet. Be sure to monitor the pressure on the arrow of the pressure gauge.

At the outlet, we connect a hose with a nozzle for irrigation. Gradually open the faucet. We direct the hose to the car and apply foam. The density can be adjusted with a garden nozzle for watering.

Thick active foam quickly corrodes dirt and removes it from the surface without a washcloth

The foamed car should stand for 10-15 minutes. Active foam flows down together with dirt. Then it is enough to wash off the foam with plain water and wipe the surface of the car.

As you can see, it is not difficult to assemble a foam generator with your own hands. Special skills and abilities are not required. It will cost 10-15 times cheaper than purchased. The quality of washing will increase several times, and the savings in time and detergent are tangible. Remember that the eyes are afraid, but the hands are doing. Good luck!

A foam concrete foam generator is a special equipment that produces a mass of foam for mixing the mortar. It is used for the manufacture of cellular types of concrete masses, its action is based on the generation of air-mechanical foam.

When the device is operated according to a predetermined scheme, a highly dispersed, stable foam is mixed with cement-sand mortar. As a result, an air-saturated mixture is obtained, the density of which is much less than conventional concrete, and the breathable characteristics are higher. That is, a house built of foam concrete blocks will have walls similar in properties to natural wood, breathable.

Let us consider in more detail what a foam generator is, what its device and principle of operation are, whether it is possible to assemble a foaming agent with your own hands.

Foam generator operation

The device for creating foam concrete is relatively simple, its scheme consists of five blocks:

vortex pump supplying compressed air to the equipment;
generator for creating a special foam mass;
device that provides dosed automatic feed mixtures of liquid and air;
directly the foaming agent itself;
node for equipment control.

This scheme works for simple principle: using a vortex pump, the foaming liquid is mixed with air under pressure, after which the resulting mass enters the tank, where it occurs. The process itself is extremely simple, while the resulting foam concrete is much higher in quality than the usual one, kneaded only with a concrete mixer.

The device for producing foam concrete is simple, if desired, it can be assembled with your own hands from an ordinary metal container, a pump and supply hoses. It is connected to a concrete mixer, allowing you to get a high-quality mixture, from which blocks for construction are already formed.

Equipment types

The modern construction market offers different kinds foam concentrates, each of which has its own characteristics, has pros and cons: the first - continuous action, or non-reversible, the second is cyclic, that is, reversible.

A continuous blowing agent allows for constant, continuous flow mass into the mixer, where the preparation of the solution takes place. Cyclic equipment, unlike non-reversible, assumes that the operator will each time independently pour liquid to form foam into the receiver, and then manipulate the taps to make settings.

Thus, the first blowing agent is more advantageous, it allows you to reduce all work to a minimum, reducing the time spent.

Components with this choice are also served quite sparingly.

Today, on the market, you can purchase a device not only from domestic manufacturers, but also from foreign ones, but the cost of such foam concentrates can be quite large, so often for construction small house on suburban area used for concrete. It is assembled quite simply from improvised materials that any master usually has, and therefore its cost is much less. Just enough to buy special agent for foaming and get started.

Foaming agent Fomm-PGM

A foaming agent for producing foam concrete blocks can be used in a variety of ways, but such equipment as Fomm-PGM has proven itself best of all. This automatic machine is easy to set up, after which you just need to add all the required components to get high-quality, durable and reliable foam concrete at the exit.

This installation is non-reversible, it consists of three modules, including:

a module for supplying a solution self-injected from a prepared container. If the device has such a module, then it is semi-automatic;
a transforming module, with the help of which a mass of foam is created for future foam concrete;
dosing digital module operating in automatic mode. With this device, you can set required amount solution at the touch of a button. This is what guarantees the high quality of the mixture.

Fomm-PGM foaming agent allows you to quickly obtain a high quality mixture. The equipment works great with concrete mixers, mortar units, plastering stations, which only increases comfort. The operation of the device requires a separate connection of the compressor, the pressure of which is from six atmospheres, and the performance is from half cubic meter in a minute. Almost anyone can set up such a device.

Self-assembly

Collecting is not as difficult as it might seem at first glance. You need to start by preparing a container, into the cavity of which air and an aqueous solution will be supplied to form foam. The best option is a cylindrical tank made of metal. Such a container is installed on the ground, after which it is necessary to ensure the presence submersible pump, which will supply the solution through the built-in hose to the concrete mixer. With the help of another hose, compressed air will be supplied to the tank through the compressor, and the equipment will be adjusted using a valve. In order for the pressure in the tank to be greater, you just need to tighten this valve more strongly, that is, the setting and the circuit are extremely simple.

With the help of the same valve, the supply of water and foam concentrate is regulated. It is enough to set up the equipment once, there is no need to repeat this operation every time, which makes it much easier to work with the device.

There is one more nuance: the device must have a nozzle through which the mixture will be supplied. This will provide more high pressure, that is, the quality of the foam will be the best.

Setting and formulation of foam concrete

The characteristics of the foam blocks depend on how correctly the equipment is configured. The quality of the foam and its density also have a great influence. Therefore, the foam generator used must properly mix water, ready-made emulsion and air. The settings after the assembly of the foam generator are carried out using paired valves, the opening / closing of the system is provided by special shut-off valves.

So, we set up the foam generator, for which it is necessary to take the components of the mixture. When setting up the equipment, it is important to maintain the recipe of the future concrete, which is not as difficult as it might seem. We offer a recipe for foam concrete blocks with a density of 800:

500 TO - 320 kg;
fine sand (not silty, without clay particles) - 400 kg;
water - 180 liters;
water for the formation of foam - 50 liters;
total amount of foam - 630 liters;
special foaming agent (well suited to Arecom) - 1.2 liters.

Foam production is carried out in this way: first, water is poured for the solution, after which cement and sand are poured. After that, foam for concrete is produced, everything is mixed. Foam is supplied through a special mixer, its pressure can be one atmosphere, the pressure of the foam generator is about six atmospheres with a working capacity of 150 liters.

The above recipe is not the most optimal, since concrete with different characteristics is required for different purposes. To obtain such blocks, the number of ingredients may vary.

Final conclusions

Quite often, when building a private house, foam concrete is used, which has many advantages over other materials. In particular, this is its low cost with excellent strength and thermal insulation performance. But instead of buying ready blocks, foam concrete can be made by hand, using for this special device and ingredients for the mixture.

The foam generator can be purchased at hardware store or assemble by yourself, but the quality concrete mix here it will depend on how correctly the mixture recipe was selected and the equipment was set up.

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