DIY car wash foam generator repair

In detail: DIY repair of a foam generator for a car wash from a real master for the site my.housecope.com.

Many people are interested in refining the foam nozzle with their own hands. The reason for this interest is the low quality of the standard part. In fact, the nozzle does not form foam, or does not do it enough. Therefore, motorists have the question of how to correct the omission made by the manufacturer. Some, of course, decide to simply change the device for a more expensive one. But, there is no way out to purchase a new sink if you have a fully functional one. In addition, it is possible to make an existing sink completely ready for proper operation. For this you do not need any special materials and tools.

Refinement of the foam nozzle with your own hands is made based on the technical features of this device. To understand how to refine this mechanism, you must first understand how it works. The problem with standard nozzles is the difficulty of ejecting (mixing) shampoo with water. This is due to the low pressure of the carrier fluid (water). As a result, the detergent does not get into the mixture, or it does get in, but does not mix. As a result, such a nozzle becomes completely useless.

On some models, the shampoo inlet is too narrow to be dispensed due to the flow of water. The cause of the problem can be determined by eye. At low water pressure, the shampoo will be consumed, but instead of foam, you will get a soapy emulsion. In the second option, the detergent will simply not be consumed.

Domestic craftsmen got the hang of correcting the flaws of engineers, and there are several ways to repair. Let's consider them in more detail.

The revision consists in replacing the injectors. You will need computer hardware to make these structural elements. They are called screw nuts. We take the short one. This is how the motherboard is attached. More precisely, this nut is screwed into the case, and already it is screwed to it with a regular motherboard screw. The metal from which this element is made is quite soft and easy to drill.

We take a 1 mm drill, this will be enough. We install it in a screwdriver. If it is not possible to clamp the drill into the chuck, then you can wrap the leg in several layers of electrical tape. Next, carefully at the lowest speed, we drill a hole in the middle of the computer mounting element. Try to keep the external thread, it will still work for you. After that, carefully make slots on the end with a file for a flat screwdriver. It remains to carefully screw the finished nozzle into the nozzle.

Video (click to play).

Thus, the water is dispersed to a high pressure. But, she begins to fly through the camera, completely not drawing shampoo into the process. Therefore, we proceed to the second part of the revision.

To do this, you will need to find a mount similar to that used for the previous injector. But, just a little longer. Next, we take a drill, but thicker 2 mm. After the hole is ready, use a file to expand it to a cone. This must be done from the side, which will then look inside the nozzle. Install the finished nozzle.

Next, we take the rod from the helium pen. We cut off a tube about 3-4 cm from it. Then we drill a hole at the top of the nozzle. It is desirable to make it 4.6 mm. This will allow the tube to be inserted as tightly as possible. Make sure that the inside of the tube does not stick out in the path of the water flow. We cover everything around the tube with sealant and you can use a foaming agent. If the tube is open, you will get wonderful foam.By blocking the air supply, plugging the tube, you just get soapy water.

The next method is suitable for models of attachments with a mesh that breaks the stream of water creating a foam effect. Unfortunately, on many of these foaming agents, the meshes wear out quickly. Also, the nozzle does not always provide the proper pressure. It makes sense to change the design and replace low-quality elements. To do this, you need the following:

Jet from the VAZ carburetor;
Stainless steel mesh.

The jet is inserted in place of the nozzle. It is advisable to take a part with an inner diameter of 1-1.2 mm for this. This will create the most optimal jet. We expand the nozzle bore with a drill, and screw the nozzle into it. Next, we remove the native mesh. Using it as a template, we cut another one out of stainless steel. It is advisable to take the diameter of the mesh 1.5-2 mm. We assemble the attachment and test it.

Conclusion... Now more and more car enthusiasts acquire mini washers. This allows you to save money on maintaining the car's appearance. But, due to the design features, it is sometimes necessary to refine the foam nozzle with your own hands. This is easy to do, knowing how this device works, you can relatively quickly upgrade it.

In today's article, I want to show one of the options for making a simple foam generator from a conventional garden spray.

This sprayer will only take a few minutes to complete and the result will be great! Verified personally!

A couple of years ago, I published my article on the manufacture of MINI-high pressure WASHERS, I want to say that this homemade product works to this day and helps out very well when washing engines on a car, but in order to wash everything better, you need chemistry, and that's actually for this I made this foam generator.

garden sprayer with a metal spout (sold in any household store);
dishwashing sponge (hard top);
needle or awl.

First of all, we unscrew the upper part of the sprayer and we only need to make a small hole with a needle or an awl in the tube along which the liquid will rise, as shown in the photo below. This is necessary so that the liquid mixes with air.

You don't need to do anything else inside. The only thing, if you don't want to pump air manually, you can install a nipple from tubeless tires and pump air with a compressor, but I did not do this, since a regular pump is enough.
Next, remove the metal spout from the spray, take the upper part of the sponge, cut off a piece that is suitable in size and insert it tightly into the spout, as shown in the photo below.

And that's actually the whole revision! As I said, everything is done in just a few minutes.

Now you need to mix water and chemistry in the proportions indicated on the package and you can make foam. If there is no chemistry, then a regular detergent is fine (I tested on Feri).

Now we blow in air and try to spray the foam. Also, with the help of an adjustable spout, you can change the shape and size of the jet. The foam lays down well and evenly, and is also very dense in saturation.

And here is the sink itself, which I wrote about above. The only thing I abandoned the case and just directly connect the pump to the battery.

Hello dear friends! Today we have a very interesting topic. Especially for those who prefer to wash their car with their own hands or think that the current prices for a car wash are too high. That is, it is going to switch from professional to manual washes. Therefore, the topic of our conversation is a foam generator.

But not GPSS, which is used to extinguish fires by feeding foam. And not generators for foam concrete. While some might be interested in renting them, it’s not about them.

We are talking about a special high-pressure device that is used for non-contact car wash.A kind of garden tool that allows you to wash your own car on the territory of a private house or even in the courtyard of a high-rise building (who is not afraid of neighbors or other threats).

Of course, the job can be done with a conventional low pressure sprayer. However, a high quality result cannot be obtained from a sprayer. But the foams create a homogeneous and finely dispersed foam. Due to it, an excellent effect is achieved. I use it myself, because I know what I'm talking about.

It is not so important whether you buy an Italian foam generator or order from China, structurally they all look about the same.

The structure includes:

A special nozzle as well as a foaming tablet ensures that this mixture is delivered under high pressure. As a result, the machine quickly becomes covered with a layer that cleans away the dirt.

Such washing cannot be called completely non-contact. If you need a result, you will also have to work with sponges or brushes.

An important characteristic, on which the work and the best indicator of efficiency depend, is the volume of the tank. Usually they are made for 25-100 liters. The compressed air supplied from the cylinder must have a pressure of 5-6 bar. At the outlet, the manual foam generator has a special regulator. It allows you to control the pressure using a built-in pressure gauge.

This is where a very important point arises. If you need a mini-washer, I advise you to choose a foam generator. Although many sellers offer to buy a spray for car wash. Some even pass off a conventional sprayer as a supposedly high-performance foam generator.

In some cases, a universal sprayer can do quite well. But it is inferior to a penny because it is not able to create the same persistent foam. At the exit, you get a conventional emulsion, the efficiency of which is much lower.

Therefore, I will teach you to distinguish sprayers from generators.

the sprayer circuit does not provide for the presence of a regulator to control the quality of the mixture;
in the sprayer, the outlet nozzle has a larger diameter than that of the foam.

These distinctive characteristics are enough to make the right purchase.

Speaking specifically about manufacturers, you should pay attention to the following brands:

Karcher;
Monsoon;
Calm (Stihl);
Huter (Hooter);
Bosch;
Elitech;
Procar;
Idrobase;
Interskol;
Champion;
Patriot.

The price range is different, so go with an affordable budget. I must say right away that you should not take cheap devices. A good quality sprayer will benefit more than a low grade foam.

Go to Aliexpress, read reviews, explore different stores. The Internet works 24 hours a day, so you can always find out information about a particular model.

Now let's study the principle of operation of such a device. What is he like? The work is carried out on the basis of fairly understandable processes.

In short, due to compressed air, a special shampoo passes through the foaming agent and a finished product is obtained, that is, foam. The education process is conventionally divided into two stages.

Primary foam. A jet of water under the action of high pressure exits through the nozzle and mixes with the shampoo. In parallel, air is added to the mixture, supplied through special holes. But this foam does not have the desired characteristics, therefore it will not be suitable for washing a car.
Finished foam. The so-called pill plays the main role here. The mixture we got in the first step passes through the tablet at high speed. This is a small device that provides a foam mass with the desired characteristics. The foaming tablet is made from corrosion resistant wire. They have different cell sizes. It is important to obtain a high expansion foam. This directly affects the quality of the washing machine.

At the exit, we get a stream of foam, which is easily applied with a hose to the car, and then washed off with water.

Such a high pressure washer has important advantages:

liquid constituents are converted into foam without loss;
at the outlet, a stable mixture with excellent detergent properties is created;
foam consumption and parameters can be adjusted;
one charge of a 50 liter bottle allows you to wash from 10 to 15 cars.

But there are also a couple of downsides:

you will have to constantly refill the cylinder with compressed air;
you need to install a compressor.

Having a good sink at your disposal, using a special adapter, you can combine them into a common appliance. An excellent solution for those who have already acquired a car wash and want to improve the efficiency of their car wash equipment.

Someone even creates a homemade apparatus from a fire extinguisher or other improvised means. There are even a number of special videos where everything is clearly shown. But I would not recommend doing this kind of thing. If you want yourself a foam dispenser and a really high-quality car wash, take the money and buy yourself a good generator, even if it is Chinese.

Refinement is another matter. When buying a household or professional foam pen, many note that some parts are not efficient enough.

How can I make my foam maker even better? Here we are talking about increasing productivity, that is, increasing the amount of foam created.

No complex repairs are required. And you don't have to open the generator drawing. The essence of the refinement is to make the nozzle work better.

I note that many foams have problems with mixing components due to the imperfection of the standard nozzle. Water is supplied under low pressure, so although the shampoo enters the mixture, it does not fully mix. There are models with a too narrow hole through which shampoo is fed. The water simply does not allow the detergent to push in there.

There are two methods that can be used to improve the lack of factory pennies.

Replace injector. You will need a screw nut. This is the hardware used in computers to hold the motherboard. The plus is that the nut is soft and easy to drill. You will need a drill with a diameter of 1 mm. At low revs, it makes a hole in the middle of the nut without damaging the threads. A slot for a screwdriver is made on the front side. The resulting device is screwed into the nozzle. This is not all. We take the same nut, but a little larger, as well as a 2 mm drill. Make a hole, use a file to widen it to a cone. Only on the side that faces the inside of the nozzle. Install the nozzle. Take a rod from the pen (preferably a gel) and cut a tube 30-40 mm long. A hole of about 4.6 mm is made on top of the nozzle. This is the ideal. This will make the tube fit snugly. Seal everything, wait until dry and check the operation of the foam generator.

The cost of such a revision can be zero if the necessary materials are available.

Where to buy shampoos? In any automotive chemistry store. But it is very important to understand how to use special chemistry.

Cities such as Moscow, Yekaterinburg, St. Petersburg and many others offer a huge range of special active foam. To be more precise, the concentrate is being sold.

Try to choose quality mixes that are popular. Never use concentrates with a pH value over 12. More aggressive mixtures can corrode paintwork, chrome parts, rubber seals, etc.

It is also impossible that the shampoo contains a component called sodium hydroxide or just caustic soda. It is abused by manufacturers because it effectively removes dirt and is cheap. But at the same time, it causes enormous damage to the paintwork.

Shampoo is used according to the manufacturer's manual. Usually, 1 liter of water goes up to 20 grams of the product.But the numbers may vary. Look at the label.

Of course, in the photo, the sellers of generators demonstrate just the miraculous effect of contactless washing. But in practice, it takes more time and effort. If you like to wash your car with your own hands, then the presence of a foam generator will greatly simplify the task when compared with a standard set of a bucket of water, a sponge and car shampoo.

Write your opinion about foam generators. It will be interesting to discuss them with you. For those who, for some reason, do not want to have their own foam generator and sink, we advise you to go to a self-service car wash. Information about it has already been posted on the website.

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Every car owner always stopped by the car wash. Water treatments help to keep the vehicle clean, and special products that are applied during the wash create an additional barrier for dirt and protect the body paintwork. 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.

The foam generator is sold in a shop that sells equipment for professional car wash. The price of the purchased foam generator is from 10 thousand. And if you take a branded device, you will have to pay twice as much. Not everyone can afford such costs. 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, the owner of a homemade generator receives the following benefits:

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

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

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

To make a generator yourself, you will need:

Capacity.
Pressure gauge.
1 shut-off valve (it only allows air to pass 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 secure 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 it is possible to carry out welding work, then a receiver from a truck or an old compressor can be used for the generator. Weld 2 1/2 inch fittings and filler neck onto the body from above. The optimal volume is 20-30 liters, this is enough for personal use.

If an old water heater is lying around in a garage or shed, then it can be used to create a foam generator. In this case, no welding work is necessary.

will not be needed. How to do it, watch the video:

In the household of every summer resident, there is always an old sprayer, which is a pity to throw away.With a small upgrade and using the drawing attached above, it can be easily converted into a foam generator. Getting started:

We remove the hand pump. We muffle the holes, it turns out just a cover.

Making a foam generator with your own hands from the body of a garden sprayer

A garden sprayer turns into a semi-professional foam generator in 30-50 minutes: convenient, lightweight, economical

It is not difficult to make a foam tablet with your own hands; you will need a metal brush for cleaning dishes

Remember that the sprayer body is capable of withstanding 4-5 atmospheres pressure. 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 a regular metal dish brush. It is sold at any hardware store.

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

At the outlet, we connect a hose with an irrigation nozzle. We gradually open the tap. We direct the hose to the car and apply the foam. Density can be adjusted with a garden irrigation nozzle.

Dense active foam quickly corrodes dirt and removes it from the surface without a sponge

The foamed car should stand for 10-15 minutes. Active foam flows down with the dirt. Then it is enough to 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 the sink will increase several times, and the savings in time and detergent are noticeable. Remember that the eyes are afraid, but the hands are doing. Good luck!

This is not a foam generator, this is a container for applying detergent, the foam generator must have a valve to adjust the air supply to change the intensity of the foam, without such a valve, foam will not work, so be careful when buying a sink, the foam generator is sold separately, it is not included in a standard set, even though the package has a picture of where it is present.

Hello, is it still working and how does this minisink behave? Should I take this?

yes, I forgot to say, if you hang a canister or bottle, for example, on a fence, then there will be norms))) complete without a filter and a hose ((

Own your own car and keep an eye on car companies? Do you like digging in engines and drives, disassembling and repairing cars? Or do you do it out of need, because your "trough" is unable to work properly? Then this section is especially for you, here the content is entirely devoted to car lovers. Review of new cars, as well as the news of the automotive world.

The main automotive content consists of various reviews of modern cars. Certain people buy certain cars, or rent them, and then demonstrate to their viewers the abilities of this or that car. Such reviews are suitable for those who love hardware very much and are going to buy a decent car for themselves, and therefore are in the process of choosing. However, most of these reviews represent a rather subjective view, and this point of view often should not be taken as the ultimate truth.

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Increasingly, you can see people washing their iron horse by hand. They use foam lances for touchless cleaning. This method is becoming more and more popular, and, admittedly, deservedly so. Convenience lies in the fact that there is no need to use special materials that would have a direct effect on the body. Washing is carried out using a chemical solution that removes dirt.

Foam is formed as follows: car shampoo is poured into the nozzle. Then water is added in a certain proportion. It connects to a special mini-wash gun. The minisink needs to be turned on, and a strong air flow will be created in the pistol. High pressure foam will hit the surface of the vehicle. This is a great way to wash your car at home.

The attachment does not always need to be purchased at the store. If you wish, you can do it yourself. There is nothing complicated about it. The main thing is to follow the algorithm, which will be given below.

Get some foam earplugs. Trim them to a size of 10 millimeters.
Squeeze the blank so that it takes the shape of a cake.
Use a steel tube with a diameter of 4 mm. Punch a hole in the workpiece with a tube.
Now you need to take construction glue and plastic tubes of the required diameter.
Coat the tube with glue and put a blank on it.
You need to use silicone to create a protective coating. Apply it to the surface of the foam in an even layer.
As a result, you will get high-quality foam tips that will be better than many factory ones.

There is another option for its creation. It is used for mini-washing.

Take the fitting. Make holes with a diameter of 1 - 2 millimeters along the contour.
At the end, securely attach the jet from the carburetor. It will help you to spray concentrated liquid.
Make a three millimeter hole in the middle. This is where the foam tube will be inserted into the device.
A 0.5 liter bottle can be used as a container.
To create a good vacuum, you need to insert a plug into the back of the fitting.

Actually, if you act as prescribed in the algorithms, there will be no problems with how to make the attachment.

In order to carry out the refinement of the foam nozzle, the following materials and tools will be required:

Nozzle.
Carburetor jet.
Tap with a diameter of 5 mm.
Drill.
Stainless steel mesh.

First, you need to drill a hole with a Ø6 mm drill on the side where the foam mixture is created. Using a tap, make a hole for the liquid so that the jet can be inserted there. Previously, the water passed freely, but now there is an additional obstacle in its path. The water will now spray even harder.

To get more foam, you need to increase the air supply. This is done using a Ø 1 mm drill. A hole is drilled from the top of the bit. It needs to be exactly aligned with the orifice pumping fluid from the barrel. Then, with a drill Ø 7.5 mm, drill a hole in the place where the foam comes out. It turns out that the mixing chamber of liquids becomes much larger. Further, with the smallest drill, make four holes cross to cross. It remains to install the grid. It is placed in the back, where the nozzle was originally located, which must be removed immediately. It can be inserted in several layers through the gaskets. This moment depends on what kind of foam is needed.

It turns out not a nozzle, but an improved factory one. Works great, provided everything is done correctly.

The efficiency of washing largely depends on the quality of the applied foam - the higher its density, the better the cleaning properties, the lower the consumption of water and chemicals. And the foam is given just by the 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.

Structurally, the foam generator is very similar to a conventional garden sprayer, the concept is almost the same. But there is one significant nuance - foam is a high pressure equipment.

The main building blocks of this equipment are:

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

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

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

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

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 fraction of high density.

And then the ready-made foam is fed to the gun, with which it is applied to the surface of the body. This gun is equipped with a foam regulator that allows you to set the parameters of the output stream.

DIY foam generator

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

The washer fills the bottle 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 to the required pressure.
When the valve of the gun is opened, the air begins to squeeze out the solution through the nozzle, where the primary foaming occurs.
Moving at a high speed, the foamed solution hits the foaming tablet grid and, passing it, is separated, which is accompanied by the formation of a finely dispersed foam.
The finished foam is fed to the gun and then through the nozzle this jet is fed 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 works approximately according to this principle - a sprayer. But unlike the foam generator, at the exit from the pistol, it forms an emulsion, in which the washing effect is lower than that of the foam.

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

The main advantages of the foam generator are:

economical consumption of detergent;
the foam obtained at the exit has an excellent washing function;
the ability to adjust the flow of the jet;

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

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

A gun with a sink attachment. Connected via a hose to a pressure washer

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

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

The foam kit works like this:

It fits over the water supply hose from the pressure washer.
After turning the sink into operation, high pressure water is supplied to the foaming agent, and from there to a container filled with detergent, where primary foaming occurs.
The resulting solution in the container is squeezed out by the supplied 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 bell to the surface of the body.

For the convenience of work, extension cords (spears) of different lengths can be connected to the foam concentrate in order to ensure the application of foam to any surface of the car, including the roof and bottom.

Read more about what a pressure washer is and how to choose it, read here.

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

small overall dimensions;

good quality foam obtained at the exit;

ease of refueling (no water is required to create a solution);

But without a pressure washer, the foam set will not be able to work.Due to the powerful jet obtained at the outlet, the consumption of the detergent for such equipment is slightly higher than that of the foam. In general, this is a perfectly acceptable option for contactless car wash at home. And the foam kit is much cheaper than the foam generator.Read more about the touchless car wash and the foam nozzle for the touchless car wash here.