This air piston compressor is very easy to manufacture and anyone can repeat it if desired. The compressor can be used to inflate balloons, for some chemical experiments where it is required to create air bubbles in a liquid, like an aquarium fish compressor, etc.
What is required to make a compressor?
- The motor with a 12 V gearbox is the most scarce part, you can buy it here -
- Several bicycle spokes.
- Two valve nipples from a bicycle.
- 12 V power supply, you can buy it here if you suddenly don't have it -
Bicycle spoke.
Manufacturing
So, if you have collected all the components, but we can start manufacturing our compressor.Bend the needle at the end at a right angle.
With wire cutters we bite off the knitting needle on the other side, so that we can make such an L-shaped shape.
We insert the threaded part of the spoke into the hole in the gear motor shaft. The hole was there in the beginning. We fix the second locking nut from the other knitting needle, tightening it with pliers.
Then we take two knitting needles and wind one on the other. We take out the inner knitting needle, bite off a part of the knitting knitting needle. Here's what should happen.
We bite off at a distance of about 10 cm and make a bend.
Next, we put this curl on the part that was made earlier on the gear motor. The limiters were made from lock nuts from the spokes. Fix the nuts with super glue. We have a moving node. This is the piston lever that will push the compressor piston.
Let's take a piece wooden board and attach the motor with the gearbox and our crankset using a brace, screws, and a piece of wood for elevation.
We take out the syringe, separate the needle - it will not be needed.
We take out the plunger of the syringe and cut off the lower edges into a cone to ensure greater ease of movement of the plunger, removing excess pressure.
With a hot soldering iron, from the side closer to the beginning of the syringe, we will make a hole for the nipple valve.
We insert the nipple, fix it with super glue. This will be the intake valve.
We fill the hole for the needle with hot glue - we do not need it.
We make another hole with a soldering iron and insert the exhaust valve, fix it with super glue as well.
For greater reliability, and so that there are no leaks, fill the valve connections with epoxy.
Take the paste from the gel ballpoint pen. Cut off a small piece about 1 cm. Glue this piece to the end of the piston with super glue.
Insert into it the end from the spokes of our mechanism. And install the modified syringe on a wooden stand. Everything is fixed with hot glue.
It is not necessary to buy a compressor for painting work or pumping wheels - you can make it yourself from used parts and assemblies taken from old equipment. We will tell you about the designs that are assembled from improvised materials.
In order to make a compressor from used parts and assemblies, you need to be well prepared: study the diagram, find it on the farm or buy some parts. Consider a few options for independent design of the air compressor.
Air compressor from refrigerator and fire extinguisher parts
This unit runs almost silently. Consider the scheme of the future design and make a list of the necessary components and parts.
1 - tube for filling oil; 2 - starting relay; 3 - compressor; 4 - copper tubes; 5 - hoses; 6 - diesel filter; 7 - gasoline filter; 8 - air inlet; 9 - pressure switch; 10 - cross; 11 - safety valve; 12 - tee; 13 - receiver from a fire extinguisher; 14 - pressure reducer with pressure gauge; 15 - moisture-oil trap; 16 - pneumosocket
Necessary parts, materials and tools
The main elements are taken: a motor-compressor from a refrigerator (preferably made in the USSR) and a fire extinguisher cylinder, which will be used as a receiver. If they are not available, then you can look for a compressor from a non-working refrigerator in repair shops or at metal collection points. A fire extinguisher can be purchased on the secondary market or you can bring friends to the search, at work who may have decommissioned OHP, ORP, DU for 10 liters. The fire extinguisher must be safely emptied.
In addition, you will need:
- pressure gauge (as for a pump, water heater);
- diesel filter;
- filter for gasoline engine;
- pressure switch;
- electric toggle switch;
- pressure regulator (reducer) with pressure gauge;
- reinforced hose;
- water outlets, tees, adapters, fittings + clamps, hardware;
- materials for creating a frame - metal or wood + furniture wheels;
- safety valve (to relieve excess pressure);
- self-locking air inlet (for connecting, for example, to an airbrush).
Another viable receiver came from an automobile tubeless wheel. Extremely budget, although not very productive model.
Wheel receiver
About this experience, we suggest you watch a video from the author of the design.
Garage Compressor - the right equipment in your garage. With it, you can paint a car, inflate tires, supply air for the operation of pneumatic tools.
To do this, they are subject to certain requirements in order to create the desired air flow with the required pressure. How to make a compressor in the garage, introduces the proposed article.
Features of using the compressor
Air compressor always needed in the garage. It can be used both to blow off dust from the surfaces of parts treated with an abrasive, and to obtain excess pressure in pneumatic tools.
Often the working life of the compressor is necessary to paint a car, which imposes certain requirements on the generated air flow:
- The flow must be strictly uniform without any impurities in the form of droplets of liquid, oil or suspended solids. On a freshly applied paintwork, graininess, cavities and shagreen are due to the penetration of foreign particles into the air stream.
- Uneven flow of the mixture leads to streaks of paint and the appearance of dull spots on the enamel.
- Branded air compressors manufactured by the industry have all the functions for such a process, but are quite expensive.
- Not inferior to professional ones, you can create a product model yourself or use a compressor for a garage from a refrigerator.
- In this case, the device for holding compressed air, which is called the "reservoir", builds up overpressure. The air flow can be forced manually and mechanically.
- Manual feeding saves money, but it takes a lot of energy and effort to control the process.
- These shortcomings are eliminated with automatic injection, but in this case, the oil in the air pump is manually replaced.
- Then the compressed air is evenly supplied through the outlet fitting to the actuators.
How to make a simple refrigerator compressor
The simplest compressor in the garage can be made from an old refrigerator.
To make it, you will need to purchase:
- Air filter from a car, designed for different pressures. Its price is quite small.
- Bypass plumbing valve, which can be restrictive and disruptive, combined with check valve six atmospheres.
- Any plumbing hose that can withstand more than six atmospheres.
- Chinese pistol without pressure gauge.
- Any capacity accumulative cylinder. The larger it is, the less often it will need to be turned on.
- From copper tubes, connecting communications or hoses of any formation.
Tip: The balloon is an accumulator for accumulating air. As you work, the pressure will decrease, which is not very important when inflating tires, where no more than three atmospheres is enough. But for pneumatic tools, this will not be enough and critical.
The instructions for making the device are as follows:
- The tank is being assembled. Its device includes at least three nozzles:
- input;
- day off;
- to drain condensate. The element is installed after mounting the container strictly below, so that the liquid can be drained without problems.
- With the compressor, the problem may be that it will spit out oil, so you need to close the outlet pipe so that it points straight up.
- The hose to the tank should go in the same direction.
- The intake pipe is bent upwards and is equipped with a short rubber tube, it is mounted on its end air filter from the car.
- A check water bypass valve is placed between the cylinder and the compressor, which prevents air from escaping back, and is the simplest indicator that the pressure has become a predetermined value. When it reaches six atmospheres, it will begin to hiss, which means that it is time to turn off the compressor engine.
The compressor is an indispensable thing in any garage. But buying a good compressor is not cheap. Craftsmen share their experience - how to assemble a compressor in a garage with your own hands from simple and affordable parts.
An air compressor is a reliable assistant. With the help of a directed jet of compressed air, it is easy to clean the car from dust and increase the pressure in pneumatic tools for the garage.
Using a stream of compressed air, you can always perform high-quality painting of individual parts or the entire car body.
The main requirement for good compressor operation is that the air must be supplied under uniform pressure and must be free of dust and oil. If during painting there are such particles in the air supplied by the compressor, then the paint layer is applied unevenly.
A good factory-made compressor is not cheap, but it can be used both for professional painting and for high-quality spectacular airbrushing. Having studied the principles of operation of such a device, you can make a high-quality homemade one.
The principle is simple - pressurized air is collected in a sealed container (receiver). The pressure in the tank can be increased both mechanically (manually) and with the help of automation. It is inconvenient to constantly pump up pressure manually, automatic adjustment is easier to use.
In compressors with automatic control, you only need to monitor the regular oil change in the pump to prevent rapid wear of rubbing parts.
A jet of compressed air through the fitting enters the desired device (for painting, for cleaning or for blowing hoses).
How to make a simple compressor - detailed instructions
The simplest compressor is easy to make from a car chamber. For simple repair work in the garage, such a simple compressor is quite suitable.
We will need the following details:
- we will use an old camera as a receiver, the tire may not be removed. The main thing is that it be airtight;
- the air blower in such a compressor will be an automobile pump with a pressure gauge;
- still need a nipple from the camera, a repair kit for rubber and an awl.
The order of assembly of the simplest compressor in five minutes:
- be sure to vulcanize the chamber if there is an air leak;
- now you need to install an additional nipple in the chamber, through which air will be supplied to the spray gun;
- the second native nipple of the chamber will serve as a pressure relief valve;
- we glue the nipple, seal it with gaskets and connect it to the spray gun.
Important. The nipple from the second nipple must be removed so that the air stream from the chamber is supplied to the spray gun freely.
It remains to adjust the desired pressure in the receiver. This is done through trial and error. We paint the experimental surface and ensure that the paint lays down evenly. We follow the pressure gauge - in the process of applying paint, the pressure level should decrease smoothly, and not abruptly.
With such a simple compressor, you can tint the body or individual parts, but for professional and convenient work, you need a more advanced compressor - with automatics.
Improved handy DIY compressor
How to make a compressor that will not be inferior to the best Russian and foreign analogues? You will need the following details:
- conventional manometer;
- gearbox, be sure to choose a gearbox with a filter to prevent oil and moisture from entering the receiver;
- any relay for adjusting pressure indicators;
- fuel filter (for gasoline, not for diesel);
- connecting coupling for four water outlets (internal diameter 3/4);
- you will need adapters in diameter for tight connections of parts;
- large automobile clamps;
- receiver;
- engine oil - you need a viscosity of at least 10W40, metal paint and rust additive;
- electric toggle switch;
- oil hose;
- a piece of thick board - this will be the basis of the compressor;
- syringe;
- hardware for fasteners;
- silicone sealant and fumlenta;
- wheels for furniture;
- diesel filter.
Half of the components can be found in any garage.
We select the engine for the compressor
A good engine for our compressor is spare parts from an old Soviet refrigerator, it already has a start relay, which is very convenient, as it regulates the amount of atmospheres in the receiver. You need an engine from an old unit (Dnepr, Donbass, Oka), imported models give less pressure in atmospheres.
What should be done:
- the compressor needs to be cleaned, rust removed, oiled on the inside and painted on the outside. There are three outputs on such a compressor - we find out where the supply is, and where the air jet exits, we mark with a cross;
- One tube in older models is sealed, it must be carefully opened, this will be a hole for adding oil to the compressor.
Important. So that when sawing off the tip, the chips do not get inside the compressor.
- pour out the old used oil and fill in the same amount of semi-synthetic oil, it is convenient to pour oil into the compressor with a 2 ml syringe;
- we put a plug from the screw and seal it with fumlent;
- install an oil filter on the outlet pipe;
- we fix the compressor, a cylinder with compressed air and a starting relay to the board.
For compressed air, it is convenient to use a 10-liter tank from an old fire extinguisher, no longer needed. Such a cylinder can withstand pressure up to 15 MPa.
An air compressor operating from 220 V in a home or garage is necessary for various purposes: it is easy for them to pump up tires, make repairs by setting pneumatic tools in motion, blow dust and chips from treated surfaces, use as a spray gun. In specialized outlets, a large assortment of pneumatic compressors is presented, and such a unit costs quite a lot. big money. But if you wish and have certain skills, it is possible to make a compressor at home with your own hands.
Any compressor, or do-it-yourself, works according to simple principle – the motor pumps air into the tank, where it is under the required pressure which is controlled by a manometer. When the pressure drops to the lower limit, the engine starts its work, and when the set value is reached, it turns off. Depending on the purpose that the compressor will perform, it is possible to manufacture both a simple and a semi-professional device.
The unit is mounted on a base or frame, for which you can use any available material, for example, a sheet of chipboard or plywood right size, where all parts are located so that they are easily accessible in case of maintenance or, if necessary, repairs. The old KamAZ brake tanks are perfect for the role of the receiver, where there are already threads for fittings and a condensate drain valve, or an empty fire extinguisher bottle.
Sometimes several containers are used, and then the necessary bushings and tubes are welded into them to connect the rest of the system. The design must install a dehumidifier and an air filter, which are sold ready-made. As connecting tubes, metal or oxygen hoses used for gas welding are used. From automation, a starting and pressure switch are separately purchased.
What will be needed?
The main part of the handmade product is the motor-compressor.It can be purchased separately, but such devices do not differ in power and reliability, and are also quite expensive. For this purpose, it is suitable, which is devoid of such shortcomings, and repairs to such a unit during normal operation are extremely rarely needed. Also you will need the following materials.
