Every car enthusiast knows how important it is to take care of the cleanliness of his iron horse. Liquid dirt, dust, aggressive chemicals used for street cleaning in winter time, can cause irreparable damage to the body of your car. And a neat, clean car looks much better than a dirty, dirty one. Often the car owner is stopped from more frequent washing The cars are only tall and there are long queues. However, these problems can be avoided if you make a foam generator for washing your car at home with your own hands.

Washing a car using foam is non-contact, which means there is no chance of causing damage to the paintwork of the body. Thus, touchless washing using a high pressure steam generator is preferable to other methods. But the cost of special equipment for such a car wash is quite high and does not justify the cost of purchasing it when used periodically to wash one car. A good solution in this case would be a homemade foam generator.

Design features of the foam generator device

The foam generator for a car wash is similar in design to any device that uses compressed air. It consists of a cylinder, a foamer, a sprayer and connecting hoses. Compressed air under pressure enters the working container, in which it is mixed with shampoo. Thanks to this design, a person avoids the need for contact with chemicals. Foam shampoo removes dirt better, even in hard to reach places. Damage to the paint layer is eliminated; on the contrary, due to the wax content in the shampoo, a protective anti-corrosion film is formed. The washing speed increases and takes only 15-20 minutes.

The principle of operation of the steam generator

The steam generator is characterized by very simple principle works:

1. The washer fills the cylinder aqueous solution and, and then tightly closes the neck to ensure a tight seal.
2. Next, the compressor must be connected and water pumped to the required pressure.
3. When the gun valve opens, the solution is squeezed out with air. This is done through a jet. Primary formation is observed here.
4. The foamed solution, which has a high speed, “crashes” into the barrier - the mesh of the foaming tablet, passing through which it separates. As a result, fine foam is formed.
5. The foam is supplied to the gun and then applied to the washable surface through a nozzle.

If necessary, the washer has the ability to adjust the supply of foam to the gun.

10393 10/08/2019 4 min.

Contactless washing For many car owners it is a luxury, as it costs up to 300 rubles. Not everyone will allow themselves the next time they wash their car. Buy a mini-wash, spending up to 15 thousand rubles. Not many people solve it either.

But it is quite possible to afford a foam generator for washing with your own hands from a sprayer, spending minimal funds, by making it yourself from an old sprayer and several simple details. Such a foaming agent will provide constant, almost free, but fast and effective car washing at home.

Principle of operation

The main purpose of the foam generator is foam formation from shampoo and water, which after generation is evenly distributed over the surface.

The sprayer as a foam generator is based on mixing two foaming components under compressed air pressure and supplying foam to the surface.

In practice, this is achieved by mixing water and detergent in the container, compressed air forces the solution through the foam tablet to form a dense, active foam.

For more information about the operation of a foam generator from a sprayer, watch the video:

Necessary materials

For efficient work future foam generator, the purchase of expensive components, as well as the use of new parts and devices is not necessary. When making a device with your own hands, you will need the following parts and materials:

• container from a garden sprayer. Containers from sprayers, garden ones, as well as “Quasar” or “” models are suitable for this.

• For these models, the pump or pump is dismantled;
• pressure gauge with scale up to 10 atm;
• nipple with a shut-off valve that allows air to flow in one direction; two 0.5-inch fittings with four nuts and gaskets;
• valve that regulates the supply of foam;
• metal tube and;
• reinforced hose that can withstand pressure up to 8 atmospheres;
• hose adapter;
• clamps for connecting fittings with hoses;
• foam tablet.

When selecting materials, the first step is to determine a container that can withstand pressure up to 6 atmospheres. Undamaged tank garden sprayer fits these requirements quite well. You can buy a foam tablet in a store or make it yourself.

The basis for the functioning of the foam generator from the Zhuk sprayer is a metal mesh, which can be easily made from a metal brush intended for washing dishes, or a tightly knitted lump of fishing line.

Safety precautions

When making a foam generator, you need to take into account that the container in the sprayer can withstand pressure up to 4-5 atm. When pumping air into it, be sure to monitor the pressure gauge reading or control the pressure with the relief valve.

Do not use the device for other purposes than for its intended purpose by pouring toxic or flammable substances into the container.

How to make a foam generator from a sprayer with your own hands? If you have previously made your own for a snow blower, made one, assembled it yourself, or for a walk-behind tractor, then it will not be difficult for you to make a foam generator yourself from a sprayer.

If the necessary parts and components are available, the foam generator is assembled in the following order:

• in a sprayer container deleted hand pump and the holes are plugged;
• a pair of 1.27 cm (0.5 inch) squeegees are installed in the upper part of the tank. The parts are fastened with nuts on both sides, and their tightness is achieved using gaskets;
• A T-shaped adapter is placed on the air supply, a pressure gauge and a shut-off valve are placed on it, and a tube with a length slightly less than the height of the tank is attached inside. This is necessary so that air enters from below. Thanks to this, the liquid foams;
• the second drive is designed to release foam. A tap, a foam tablet are installed on it, and for quick connection of the hose, it is easily removed. A metal tube is connected to the hose, and a nozzle or sprayer is connected to it. The foam generator is ready.

For automatic adjustment pressure in the tank, it would not hurt to install fittings for air injection control in the form of a valve that releases excess atmosphere.

This will free the operator from constantly monitoring the pressure gauge when pumping air, and guarantees the safety of the device, eliminating the possibility of the tank exploding under pressure.

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After checking the reliability of all connections and the tightness of the tank, water is poured into it through the neck in an amount of 2/3 of the total volume and concentrated shampoo is added according to the instructions (usually up to 2 g/l of water). The neck is securely tightened and the outlet valve is closed.

By pump or compressor through a shut-off valve pump air to the required pressure. The hose with the nozzle is directed to the surface for applying foam and the tap is slowly opened. The density of application can be adjusted using a nozzle or nozzle.

Conclusion

Self-assembly of a foam generator is quite simple and does not require special knowledge and skills. The cost of its production will be 10-15 times lower, than the factory device. To do this, you need to draw up a diagram of the product and a sequential action plan, as well as correctly select all the necessary materials.

When assembling the device, safety requirements must be taken into account: since the foam generator tank operates under pressure, its permissible value is controlled with a pressure gauge, and all parts and connections must be functional and reliably assembled.

Foam nozzle, foam kit, injector, and in some cases even a foam generator …

Whatever they call this small, but at the same time very important device used for contactless car washing. And in order not to be confused with definitions, let's call these devices here similar to the title of the article - foam nozzles.

In addition, it is necessary to immediately clarify that this material will focus exclusively on professional devices, i.e. Foam nozzles for residential car washes will not be considered. The fact is that most household foam nozzles, to put it mildly, are far from ideal, and their design and execution do not allow achieving the required results when foaming. In other words, the use of non-professional (household) foam nozzles, at a minimum, can lead to increased consumption of car shampoo and poor quality sinks

The operating principle of any foam nozzle is based on the ejection effect. Without delving into physics and, in particular, the laws of hydrodynamics, we can say that the essence of the ejection effect is the transfer of energy from one medium moving at high speed to another. According to Bernoulli's law ( great physicist and mathematician Daniel Bernoulli - Wikipedia link) the flow of water inside the foam nozzle creates a reduced pressure of one medium in the tapering section, which causes a “suction” of another medium into it (a cleaning solution from a cylinder), which is then transferred and removed from the place of suction by the energy of the first medium .

To ensure maximum cleaning effect, it is not enough to apply the washing mixture in liquid form to the surface of the car, because, frankly speaking, this could be done without resorting to a foam nozzle. However, practical experience shows that much better results can be achieved when applying the detergent in the form of foam. To transfer car shampoo from a liquid state to foam, a special insert is provided in the design of the foam nozzle, popularly called a “tablet”. It is a small cylinder (diameter about 10 mm, height ~ 7 mm) of thin compressed wire made of of stainless steel. At the same time, between its fibers there are so-called “pores”, passing through which the washing solution is converted from liquid into foam. Just the foam that is applied to the car and provides high-quality contactless body washing.

Rice. 1 foam tablet

The design of the foam nozzle also provides mechanical regulator detergent consumption - valve. Its function is to increase or decrease the nominal diameter of the water flow through the foam nozzle. If we go back a little and remember the great physicist Bernoulli, according to whose law our device works, we will be able to understand exactly how a change in the nominal bore diameter affects the consumption of auto chemicals. At a minimum flow diameter (fully screwed in valve), the water flow rate is maximum; at a maximum diameter (fully unscrewed valve), it is minimum. According to Bernoulli's law, the higher the flow speed, the more liquid from another medium this flow can rush along with it. As a result, we find that at different positions of the control valve, the consumption of detergent is different: the valve is tightened - the consumption of auto chemicals is high, the valve is unscrewed - the consumption is small. Thus, this simple device, when used skillfully, allows you to flexibly regulate the composition of the applied solution, thereby achieving significant savings in detergent.

The last thing in order (but not least!!!) that is worth mentioning when talking about the design of foam nozzles is the unit for adjusting the foam jet. It consists of two stainless steel plates located inside a cylindrical hollow body (jet regulator). When this regulator is rotated, the plates are either brought together or spread apart, which directly affects the cross-sectional shape of the foam jet, which changes from a round spot of small diameter to a narrow strip that immediately covers a significant part of the surface of the car body. As practice shows, most washers prefer the latter option, since it allows you to apply the detergent composition more evenly, more economically and much faster.

Foam nozzles , like any other equipment, require careful handling and, at least occasionally, maintenance.

Key points to pay attention to during operation and maintenance:

1. The foam “tablet” tends to become clogged with dirt, impurities and other debris that may somehow be present in the water. To increase the service life of the “tablet”, be more careful when cleaning/replacing water filters, as well as the cleanliness of the detergent solution. It is also necessary to avoid getting dirt on the connecting surfaces of the foam nozzle and the high pressure washer.
2. It must be remembered that using a foam nozzle as a liquid wax sprayer significantly reduces the life of the foam “tablet”. Wax, like nothing else, clogs her pores. Foaming properties drop sharply and, as a result, the performance characteristics of the nozzle deteriorate.
3. Periodic complete disassembly and cleaning of parts, channels and valves will not damage the device. If grains of dirt get into the control valve, it causes increased consumption detergents, which can be avoided by simple preventive cleaning.
4. Be very careful when disassembling and assembling the device. Most parts of the foam nozzle are made of brass and therefore the likelihood of damage to the device due to careless maintenance is quite high.

In conclusion, we present some classification of professional foam nozzles.

Their main difference is in the “trigger-nozzle” connecting elements. Each manufacturer of car wash equipment prefers to use their own connecting parts, be it quick-release couplings various configurations, nut, fitting or wedge-turn locking mechanism.

Rice. 2 Classification of foam nozzles by types of docking unit

	Name	Connection
	Foam nozzle for household Karcher	Quick release 90°
	Foam nozzle for prof. Karcher
	Foam nozzle for Comet, Kranzle, Portotecnica.
	Foam lance with nipple “KW” for Alto, Wap (long nipple)	Quick coupling KW
	Foam nozzle LS3 with PA nipple (short nipple)	Quick-release connection PA, washing equipment, and car care products. For any questions, please contact us by phone and e-mail specified in the section.

At modern car washes, one of the most popular and high-quality types of services is contactless washing. This method will not only quickly clean the car from dust and dirt, but will also save paintwork car without leaving any chips or scratches on it. You can arrange the same “bath” for your iron horse at home. To do this you will need a foam nozzle. Making it with your own hands or purchasing it in a &minus store is everyone’s personal choice. Buying, of course, is easier, but making it yourself will be cheaper, although it will require certain skills.

Contactless washing

The washing effect of this type of car wash is achieved through a special car shampoo, which is applied using special devices - these are foam nozzles. The process itself looks like this:

How does a foam generator work?

The principle of contactless washing is very simple - the more foam, the cleaner the car. For getting good result you will need a foam generator. This is a special bottle or other container with a volume of 20-100 liters, into which car shampoo or a special reagent diluted with water is poured. A pressure of at least 60 bar is supplied to the vessel using a compressor - this is enough to release the mixture through a special hose gun.

The foam generator nozzle can have several nozzles (up to 4 pieces), which allows you to increase the amount of active foam. Such devices are usually used in industrial washes where it is necessary to wash a large number of cars in a short time. At home, a sprayer bottle is usually converted into a foam generator, and manual air injection is used instead of a compressor. It turns out this is a home-made Karcher. Foam tablet, nozzle, car shampoo &minus - and your car shines clean!

Design and principle of operation of the foam nozzle

Now let's talk about what a device is for getting good foam. Making a special foam nozzle with your own hands is a rather troublesome, labor-intensive task and, most likely, will require special skills. Honestly, it’s easier to buy a ready-made one, well, if not all, then at least some parts. The kit includes:

Video: How to modify a foam nozzle or foam kit

The foam sprayer has special regulators:

• The first &minus is a wing-type one, located on top of the device. It is a special micrometric screw with a jet for adjusting the opening of the fitting and is used to regulate the supply of car shampoo to the mixing chamber.
• The second &minus is cylindrical, located in front and represents special “legs” like a duck’s beak, opening at an angle of up to 40. This allows you to turn a regular stream of mixture into a vertical fan and increase the spray area.

Another very important element spray foam &minus - foam tablet. It is very easy to make it with your own hands, and this is important. The &minus tablet is consumables, which requires periodic replacement, especially when improper use device.

Foam nozzles: causes of failure

In order for the device to work properly, you need to follow a few simple rules:

• Do not throw the foam nozzle on the ground, this may cause clogging of the tablet or solution supply nozzle;
• do not throw the device on hard surfaces, since the nozzle has many plastic parts that can crack;
• After using the foam nozzle, rinse it;
• Do not leave ready solution in the nozzle tank, it is better to pour it into a separate container and hide it away from children.

What is a foam tablet? Why does it fail?

One of the main parts of the device is the foam nozzle tablet. It is she who is responsible for the quality of the foam and its quantity. Failure of this element can completely paralyze the operation of the sink.
The cause of the breakdown may be the following:

• the foam tablet has worn out due to frequent use of the device;
• the mesh became clogged with sand or dirt because the device was often thrown to the ground;
• Remnants of the cleaning solution have dried inside the tablet because the device was not washed after previous use;

In large commercial car washes, the mesh is changed quite often - once every 2-3 months, but at home, one tablet lasts for several years, of course, provided that it is used correctly.

How to make a tablet with your own hands

What to do if the cause of the breakdown is a faulty mesh, but the car needs to be washed urgently, and you don’t want to spend money. There is only one way out - to make such a device, a foam tablet, with your own hands, especially since it is very easy to do. The fact is that this thing is called a tablet only because of its shape, but in fact it is a small cylinder of pressed wire. Therefore, making a foam tablet with your own hands is very simple. To do this, you need to take a regular metal dishwashing sponge and press it into a tight lump.

To give the tablet the required form, you can take the regular one plastic bottle and cut it into a funnel shape. Place it on the table and fill the neck tightly with a metal mesh for dishes. Leave the mesh in the neck of the bottle for a while to fix the shape well, then carefully squeeze it out. That's all - the DIY foam tablet is ready.

Changing the mesh step by step

All that remains is to replace the foam element. In order to change the tablet, it is not at all necessary to completely disassemble the foaming agent. You need to do it like this:

• there is a pin on one of the plastic parts - pull it out using a thin drill or slotted screwdriver;
• remove the plastic casing of the jet regulator;
• Now we take out the guide block &minus- “duck”;
• with help wrench the right size unscrew the foam mesh holder;
• using a screwdriver or drill, push the foam mesh out of the body of the holder;
• press in a new tablet;
• tighten the foam tablet holder again, not forgetting to apply threaded connection layer of sealant;
• Then we perform all the steps in the reverse order: insert the “duck”, return the casing and pin to their place.

That's it, the foam generator is ready to work again.

Video: Simple foam nozzle repair, replacing bottle #1

How to clean the foam nozzle

In order for the foam mesh to serve you longer, you must wash the foaming agent after each use. You need to do it like this:

Carry out this procedure after each use of the sink, otherwise the foam tablet may become clogged. Residues of washing foam can clog the nozzle or the mesh tablet itself, become compressed inside and block the exit of the foam. If this happens, you can try to repair the mesh. To do this, you need to take it out and soak it in kerosene for a while, and then try to clean it mechanically using a knitting needle or a thick needle. If the above manipulations do not bring the desired result, then the foam tablet will have to be replaced.

Attention, TODAY only!

Every car owner has to go to a car wash. Water treatments help keep the 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, thick active foam is used, obtained by foaming in special device. Some car enthusiasts use homemade foam generators when washing.

Benefits of using a foam generator for car washing

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. But if you take a branded device, you will have to pay twice as much. Not everyone can afford such costs. Therefore below is small instructions, how to make a foam generator yourself and spend only 500 to 2 thousand rubles on its production. In addition to saving Money, owner homemade generator receives the following benefits:

• saving time - washing a 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 clean hard-to-reach places.

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

To understand the operating principle of the foam generator, below is a diagram. Water is poured into the container and detergent concentrate is added. Air from the compressor is supplied through the shut-off valve. To control the pressure in the container, a pressure gauge must be used. The output is a mixture of water and detergent. It passes through a foam tablet which produces a dense active foam.

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

What you will need for assembly

To make your own generator you will need:

1. Capacity.
2. Pressure gauge.
3. 1 shut-off valve (it only allows air to flow in one direction).
4. 1 tap (they regulate the supply of finished foam).
5. Metal tube.
6. Reinforced hoses that can withstand pressure of 6-8 atmospheres.
7. Metal clamps for reliable connection of hoses and fittings.
8. Foam tablet.

First of all, you need to decide on the capacity. The main requirement is the ability to withstand pressure of 5–6 atmospheres. If it is possible to carry out welding work, then for the generator you can use a receiver from a truck or an old compressor. Weld two one and a half inch fittings and a filler neck onto the top of the body. Optimal volume 20–30 liters, this is enough for personal use.

If you have an old water heater lying around in your garage or shed, you can use it to create a foam generator. In this case, welding work is not necessary.

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

Every summer resident's household must have old sprayer, which is a pity to throw away. With a little modification and using the drawing included above, it can easily be converted into a foam generator. Let's get started:

Remember that the sprayer body can withstand a pressure of 4-5 atmospheres. Do not overdo it, monitor the pressure using the pressure gauge.

We buy a foam tablet in the 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 this is 10-20 g per 1 liter of water. Close the neck and outlet valve securely. We supply compressed air from the compressor to the inlet. Be sure to monitor the pressure along the pressure gauge needle.

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

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 off along with the dirt. Then just rinse 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. No special skills or abilities are 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 noticeable. Remember that the eyes are afraid, but the hands do. Good luck!

The safest method for car body paint is a non-contact washing method using a foam generator (we also call it foam). The essence of this method comes down to applying a chemical detergent to the surface of the body in the form of fine foam. After application, it softens dirt and dust, then all that remains is to wash it off with a stream of water. with a paint coating (rag, brush, etc.) eliminates damage to the surface layers of the varnish, that is, the formation of the so-called “cobwebs” is completely excluded. Therefore, this method of car washing is now a higher priority and more advanced.

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

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

The main components of this equipment are:

1. Cylinder (volume varies - from 25 to 100 liters).
2. Mixer.
3. Gun.
4. Connecting hose.

Large equipment, with a large capacity cylinder, can be installed 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 mandatory coating with anti-corrosion agents. In some factory models, a measuring ruler is installed on the cylinder, which allows you to control consumption and timely refill.

Penogen cannot work independently, since it requires a supply of compressed air. For this purpose, there is a fitting on the cylinder for connecting the compressor. Usually operating pressure for a foam generator it is 5-6 Bar. To control the pressure, a pressure gauge is installed on the container; pressure adjustment is carried out using a pressure regulator included in the design.

Foam tablet

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

The principle of operation of the foam generator

DIY foam generator

The principle of operation of penogen is very simple:

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

It is noteworthy that another equipment for contactless washing, a sprayer, works approximately on the same principle. But unlike a foam generator, at the exit from the gun it forms an emulsion, whose cleaning effect is lower than that of foam.

The difference between them comes down to the different application guns used. Emulsion is a slightly different state of liquid than foam, so to spray it you need a nozzle with an enlarged hole. In addition, it is impossible to adjust the emulsion supply parameters of the sprayer, that is, there are no adjustment elements on the gun. These nuances will help you easily distinguish a foam generator from a sprayer.

The main advantages of the foam generator are:

• economical consumption of detergent;
• the resulting foam has excellent cleaning function;
• possibility of adjusting the jet flow;

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

Foam kit as a type of foam generator

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

Gun with nozzle for washing. Connects via hose to high pressure washer

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

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

The foam kit works like this:

1. It fits onto the water supply hose from the high pressure washer.
2. After the washer is put into operation, water under high pressure is supplied to the foam generator, and from there to a container filled with detergent, where primary foaming occurs.
3. The resulting solution in the container is squeezed back into the foaming agent by the incoming water, where it passes through the foaming tablet.
4. At the exit of the tablet, finely dispersed foam is formed, which is supplied through a socket to the surface of the body.

For ease of use, extensions (spears) of different lengths can be connected to the foam generator to ensure the application of foam to any surface of the car, including the roof and underbody.

The stream obtained at the outlet of the foam kit can also be adjusted using a valve installed on the foam generator.

Video: Do-it-yourself foam nozzle for washing

The foam kit is different:

• small overall dimensions;
• the resulting foam of good quality;
• ease of filling (no water 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 produced at the output, the consumption of detergent for such equipment is slightly higher than for foam. In general, this is a completely acceptable option for contactless car washing at home. And the foam kit costs much less than a foam generator.

Video: DIY foam generator for $2

Do-it-yourself foam generator for washing

Foam generator assembly

Considering the design of both types of equipment, you will notice that their main component is a foaming tablet, which can be purchased separately. This means that it is quite possible to make a homemade foam generator.

The easiest way to make foam is to take a regular garden sprayer as a basis and modify 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 vary);
• two ½-inch bends and nuts for them;
• check valve;
• air fitting;
• foaming tablet and adapter for it;
• metal tube.

Having all this, you can start remaking:

1. We cut off the pressure relief valve and the fitting for connecting the hose from the sprayer.
2. We insert the brackets into the resulting holes and secure them with nuts on both sides and using sealing gaskets.
3. We install a tube on one of the pipes (so that it almost reaches the bottom of the container), a check valve and an air fitting.
4. On the second run, we wind the foaming tablet through the adapter.
5. The manual pressure pump of the sprayer must be completely turned off, since it will not be needed and will only serve as a tank cap.

Video: DIY foam generator

All that remains is to connect the hose to the outlet fitting of the tablet, and attach a garden spray gun to the other end. At this point the product can be considered ready.

Working with it is not as convenient as with factory equipment, but it is quite acceptable. To wash your car you need to:

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

The idea of ​​touchless car washing is based on minimal impact on the paintwork when regularly cleaning body panels. In practice, it is the foam generator for a car wash that allows you to perform such car care.

Purpose and operating principle of a fine particle generator

During operation, the foam generator for washing, due to the high pressure inside the working cylinder, creates foam, which is applied to the body panels to clean them. The composition successfully fights the most persistent stains. In this case, the mechanical impact is minimal.

The use of the active composition of the foam makes it possible to produce comprehensive cleaning from pollution:

dust and dirt;

persistent organic compounds;

microflora.

The main obstacle for individual use designs of the current type is the high price of a professional product. Expensive car does not justify the costs when using it periodically to wash one car. Therefore they are popular homemade installations for contactless washing.

WATCH THE VIDEO

Structurally, a foam generator for a car wash is similar to any installation overpressure– from a garden sprayer to an injection cylinder liquefied gas. The design of the device includes the following elements:

High pressure cylinder.

Foaming agent.

A sprayer that provides flow and fineness of spray.

Connecting hoses are of sufficient length.

Taking into account the volume of the injection container, provision should be made for transporting the equipment, taking into account the total weight.

The source of foam formation is a special foam tablet. This element is a finely porous mesh made of corrosion-resistant wire. After passing through the tablet, a liquid fraction with a high specific gravity is formed.

Manufacturing a functional and safe design

Before production begins, it is necessary to realize that the main dangerous factor when the device is operating it will become high pressure. When assembling a foam generator with your own hands, you should not skimp on installation elements.

Requirements for foam generator capacity

It is more convenient to make a homemade foam generator from a container of 25 liters or more. This will be enough for a one-time wash. The main requirement for the cylinder will be to be made of stainless steel, or ordinary steel can be used provided it is treated with an anti-corrosion compound. Durable plastic is also actively used.

Additional conditions will be:

• pressure resistance up to 6 bar;

the presence of a measuring ruler to control the filling level of the container;

Availability threaded holes under the sprayer, pressure gauge.

Sprayer requirements

The design includes a foam sprayer. This element must be different from a similar sprayer type device. Such equipment is designed to produce an emulsion, which is inferior in cleaning efficiency.

A suitable nozzle for a car wash in a steam generator compares favorably with a simpler model:

• has a finer spray;

allows you to adjust the feed rate;

provides savings in cleaning solution.

High pressure cleaning solution

It is impossible to create a foam generator with your own hands for a car wash without a pressure source. For normal operation of the equipment, the pressure created must be in the range from 4 to 6 atmospheres.

When completing the installation, the compressor will be the most expensive element. If you purchase a used sample, you should discard the sample with signs of wear. In this case, a compact unit for inflating wheels will also not cope with the job.

Assembling a foam generator for washing with your own hands

Making installation drawings

Proceed with assembly work only after sketching a promising design on the diagram, which shows the device of a foam generator for a car wash. This will allow you not to miss the following items:

• determine the sequence of assembly operations;

form full list parts and materials for assembly;

prepare the necessary tools.

The required tool kit includes:

set of wrenches;

grinder;

pliers;

• flathead and Phillips head screwdrivers;

Diagram of a foam generator from a fire extinguisher

Used metal containers are ideal for making a foam generator for a compressor. When selecting a fire extinguisher container, give preference to a container with a large diameter to avoid falling.

The work is carried out according to the following algorithm:

1. Prepare a standard hole for pouring the mixture.

New holes will be needed in the lower end and in the central part.

Tubes with fittings of the required size are welded into the holes to inject pressure and drain liquid to the gun.

Option to manufacture from a sprayer

The option of making a foam generator for washing with your own hands from a sprayer is the most preferable. This is due to the closeness of execution in comparison with the factory product. You will need to disassemble the foam generator by removing the valve and mounting fitting. Before assembly begins, two mounting holes must be present.

Subsequent work is carried out in accordance with the algorithm:

We screw the brackets into the holes and secure them with nuts. Installation of gaskets is required.

We install a fitting with a check valve on one of the air pumps.

We attach a special tank with a tablet to the second drive.

A DIY foam generator made from a garden sprayer will work correctly only if there is an air supply from the bottom of the tank. A normally functioning device at an operating pressure of at least 4 bar consumes only 40 grams of shampoo.

How to make your device more perfect

Construction practice homemade foam generators We allow you to highlight all the new directions for their modernization. And if the main drawings remain the same, then individual elements can be easily replaced.

For example, a foaming element based on wire or fishing line can be easily replaced with a piece of foam sponge. It is enough to secure it well in the wire tube. Instead of a fire extinguisher, a propane tank is successfully used.

Alternative reservoir

An alternative option to make a manual foam generator would be a regular one. plastic canister. In this case, it is possible to use the neck cover to secure both fittings.

We attach it to one fitting from the inside plastic tube. Inside, due to dense packing with fishing line, we prepare a foaming device. We attach a hose with a sprayer at the end to the outside.

We leave the second fitting free to connect the compressor. This is how you prepare the simplest touchless car wash with your own hands.

Touchless washing using a portable steam generator

Design hand-held device differs not only in overall dimensions, but also according to the principle of operation. A passing stream of compressed air lifts the liquid under the influence of vacuum, and then, under pressure, the solution is sent to the foaming agent.

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The devices are sold as per finished form, and are easy to assemble yourself.

This article describes the features of their design, how to make it for washing, and how to make a nozzle.

Car washing has a number of features, the main thing is not to damage the paintwork of the car. Modern car washes have low-quality guns that do not wash the car very well and often break. Gels are converted into foam using this device or dispensers. You can wash your car this way at home. It's worth making such a device yourself.

The structure of the device and its specifics

First, you should understand the functions and composition of the device if you want to assemble it. This is a metal tank with a capacity of up to 100 liters, consisting of a filler neck, a drain valve, 2 fittings, then a nozzle for spraying foam is attached. Tank, it's (2/3) filling up special means(10 ml) and 1 liter of water.

The special shampoo contains wax, which protects the car body. When the tank is full, the compressor starts working and compressed air comes out into the tank. The pressure must be at least 6 atmospheres. Also, water and product are supplied separately. It is diluted in a pistol; it is much more difficult to invent such a mixture yourself.

Foam forms in the tank and comes out through the filter, the sprayer is located in the nozzle, the pressure gauge monitors the pressure, and the water measuring tube monitors the degree of filling. Such a device helps a person; he does not interact with chemicals. The washing speed is about 20 minutes.

Pros of the device

• no contact with the car body, prevents paint from darkening;
• You can remove dirt in hard-to-reach areas;
• a thin protective film is formed.

If you buy steam generators, they are expensive (depending on the capacity), so they are made with low pressure for home use.

Manufacturing Features

At self-production the cost will be about a couple of thousand rubles, and if you buy it, then about ten thousand rubles. Basic elements for manufacturing the device;

• capacity;
• reinforced hose;
• pressure gauge;
• clamp;
• stop valve;
• a tube.

We select a tank that can withstand up to 6 atmospheres; the volume should be up to 10 liters, so as not to add foam a second time.

Scheme if you make the nozzles yourself

Exist different types nozzles What tools will you need for this:

1. Roulette;
2. Bulgarian;
3. Spanners;
4. Pliers.

Prepare inch pipe at least one and a half meters, a washcloth. How to assemble - cut the pipe to at least 0.5 meters, the larger the pipe, the better the quality of the foam. But don't forget for big pipes A powerful compressor is also required. Next, you need to hammer the pipe with a washcloth and cut a thread at the end, screw a tee onto one end, and filler on the other. Install a large filter, put a plug on one of the terminals of the tee, and connect a source of water with shampoo and a compressor to the remaining ones.

You can also adapt a regular garden sprayer and choose the right compressor. Remove the fitting and valve from it, remove the pump and install the plug. We will get 2 holes in the sprayer, screw in the clamps and secure them, install the gaskets. Screw a check valve with a fitting into one of the pipes and install a tank on the other.

When buying a foam sink, be sure to pay attention to the presence of a foam nozzle; if it is not there, you will have to do it yourself, maybe this will be a joy for someone, and it will also save significant money. And all the materials can be found at home in the garage, so making a foam generator with your own hands is simple and profitable.