Anyone who is fond of airbrushing knows well that this occupation requires an appropriate compressor. The cost of such a device is large enough. Therefore, many are interested in the answer to the question: how to make a compressor for an airbrush with your own hands?
In order to provide uninterrupted air supply during the airbrushing process, you will need a compressor, it is not difficult to design it yourself.
Air supply is performed by a mini airbrush compressor. The operation is carried out through a connected hose. When the compressor is chosen, pay attention to very important characteristics:
To determine the values of these parameters, it is first necessary to determine the conditions where the work will be carried out. At home, it is best to use a silent device. In the garage you can install a device of higher power. It is very important to know a few basic characteristics:
- excess pressure;
- total air volume
Technical indicators of the compressor
In the documentation, manufacturers typically report compressed air flow parameters. There are two such indicators:
Diagram of the membrane compressor.
- operating pressure;
- maximum pressure.
Under the worker refers to the pressure when the compressor is working with maximum efficiency. The device, having such an overpressure, is able to function for quite a long time.
No breakage of the main parts when this happens. Maximum is the pressure at which the gas is most compressed, which may cause the unit to break.
Scheme of the compressor for the airbrush made from the refrigerator.
This value indicates the amount of air that a mini compressor can create. It is measured in m³ / min. Foreign manufacturers consider the performance of the device the amount of absorbed air.
Russian companies also consider the performance of the volume of gas leaving the device.
Since there are large losses in the discharge valves, the performance indicator is reduced by forty percent, in comparison with the input parameters.
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Consequently, the specified performance of imported compressors is much inferior to the performance of domestic devices.
Main types of compressors
It is quite difficult to choose a mini compressor. These airbrush tools have so many varieties. And each has its own positive and negative sides. Before you start your own production of spray guns you need to get acquainted with their main types.
Scheme of the device homemade compressor.
- Membrane. One advantage is low cost. Due to the oscillation of the membrane air is supplied. This view is ideal for small work that requires a short time. Each model is able to create a specific pressure that reaches a maximum of 3.5 atmospheres. Air is pumped at a low speed, so only one airbrush can be connected to the device. The design of the device may contribute to the appearance of pressure surges. Initially, the pressure is minimal, but gradually it increases, which adversely affects the painting and its quality.
- Piston. This type of compressor used in airbrushing is considered the most productive. The pressure creates a piston moving in the cylinder. Mini compressor is compact, it is very easy to maintain. Since the power of such a device is large enough, it becomes possible to connect several airbrushes at once.
- Oil free piston. The main advantage is the lack of mandatory maintenance. The air leaving the device does not contain gas vapors and toxic oils.
- Special mini compressor. These compressors can be of two types:
The principle of operation of the mini-compressor with the receiver.
- oil free;
The device is connected to the mains and works with a pressure of not more than 1.6 atm. Its performance reaches 6 l / min. The generated power is enough to draw a picture on sheet A3. Such a spray gun is used by artists who have to work in a small space.
Even with a single mode, the mini compressor has one distinct advantage. When working, it does not create any noise. Its negative side is the inability to change the pressure, in addition, it heats up very quickly. Therefore, you must often turn off the machine and wait for it to cool completely.
High reliability differs mini compressor for airbrushing, made in Japan. Each such model has a separate adjustment of the receiver, you can adjust the desired pressure. Safety is provided by an emergency valve, which dramatically relieves pressure if it exceeds the maximum values.Back to table of contents
We assemble a mini compressor: recommendations
To independently make a compressor for airbrushing, it is enough to take a working compressor designed for a refrigerator. It is desirable that the device was imported. Such devices have high efficiency, while working they create a minimum of noise.
This compressor will have a pressure adjustment. It is equipped with a separate receiver. For the production will need a small financial investment.
The compressor is best taken from a non-operating refrigerator. It must be carefully detached from the mount. No need to cut the tube. Perhaps accidental hit chips. Together with the compressor you need to remove the working relay.
Then to perform the work you will need to have:
Receiver tank diagram.
- tank receiver;
- emergency valve;
- pressure gauge;
- pressure switch.
As a tank, you can use a hydroaccumulator having a capacity of 24 liters. The relay should measure pressure within 2.8 bar. Basically, it will remain operational and at six bar.
The manometer and the emergency valve will be needed in case of failure of the automation. Devices need to buy, based on the rate of pressure. If necessary, it will be possible to relieve pressure on your own: simply turn the regulator knob.
To complete the connection of all parts, you must have:
Installation of the working hose to the outlet of the diesel filter.
- hose clamps;
- check valve;
- fuel filter;
- oil separator;
- welding machine;
- pressure regulator at the outlet;
- nuts and bolts.
Before starting the assembly work, it is necessary to change the compressor oil. To this end, the tube is soldered, through which the old is discharged and the new oil is poured. The tube is jammed by a sealant.
After that, a sheet of thick plywood is taken, to which is mounted with the help of bolts and nuts:
- oil separator;
- triggering relay;
- tank receiver.
A special filter is equipped with an entrance tube. Another filter is installed between the receiver tank and the fixed airbrush compressor. A check valve is installed at the inlet; a connection relay is installed at the bottom. All compounds are treated with silicone sealant. When connecting a relay, it is necessary to follow the enclosed instructions punctually.Back to table of contents
Practically caring for the compressor is not very difficult, but you have to take pictures of some of the details. Of course, you can not take care of the device, but then he very quickly refuses to work. To service the device, you must perform the following technological operations:
Ready homemade compressor capable of pumping pressure up to 3.5 bar.
- change the oil;
- replace filters;
- drain the oil from the receiver;
- pour new oil.
When operating the compressor, the oil should change twice a year, and it does not matter at all what mode of operation the device had and how long it worked.
To change the oil, you must remove all connected tubes, unscrew the cap, slightly tilt the device and remove the existing oil from it. It is strictly forbidden to turn on the compressor without oil.
Then a new oil is poured with a syringe. Since the tubes are not yet connected, you can change the filter and remove the oil from the receiver. In the compressor you need to fill only the new oil, the old oil must be passed as a test.
After oil filling, new filters are installed, all removed tubes are connected. Clamps, which can be used many times, will secure the fastening of the tubes.