Which compressor to choose for painting a car?
Today the market of superchargers, used in painting is quite large. It is possible to choose superchargers as domestic production, and foreign companies. The nature of painting as a car will depend on the choice of a particular model, and other kinds of designs.
Significant differences in the mechanisms of technical characteristics create the need, identify and select the compressor, which is used for painting.
There are a number of differences between the painting units:
- Distinctive feature of the design (piston, screw);
- According to the level of oil saturation in compressed air (oily, oil-free);
- Drive type, uses a belt drive or coaxial;
- A 220V or 380V power supply is used);
- Volumes of filling of capacity for air;
- By method of compression (piston, membrane);
- Number of compression stages (one-, two-, multistage);
- The pressure is forced by air;
- Production of compacted air flows;
- Volumes of occupied space and weight.
Types of compressors
Compressor selection
Compressor, is a device, used to create and supply compressed air under high pressure.
The principle of operation is determined on the basis of a conventional water pump, but the distinguishing feature is that, that he is not pumping water, and air.
The oil in the device is used to prevent rapid wear of spare parts, also worth knowing, that a small part of the oil still gets into the compressed air. Especially in order that the oil does not mix with air use various filters and oil separators. If, on the specifics of the work, no more oil content 0,01 mg / m3, it is better to pick up oil-free superchargers. At designing of oil-free units specialized accessories with the lowered indicators of coefficient of contact friction are applied.. Therefore, they do not have a neck for pouring oil.
Types of compressors
- Oil compressors.
In devices of this type of construction, an oil spray system is used to prevent direct metal-to-metal contact. An oil film is formed, reduces heat dissipation and wear of parts, which will better preserve the performance of the compressor.
- Direct drive compressors (coaxial).
Aerosol primer for the car
The design consists of a crankshaft and an electric motor, which are fixed to each other by a coupling, composing a single, one-piece design. The main value of this unit is its simplicity and small installation, but with a similar design heat dissipation is complicated.
- Belt compressors.
These types of compressors use more traditional and conventional belt drive systems from an electric motor with a pulley. These units have a huge service life at low engine speeds.
- Diaphragm compressors.
Systematized more as mechanisms for domestic use, required for intermittent use. A characteristic feature of them is - high pressure appears, but low productivity contributes to this.
- Reciprocating compressors.
Should be, one of the most popular representatives of its kind. The essence of the structure of this device is as follows: the piston must move through the connecting rod, as well as the crankshaft, using an electric motor. Intake-outlet valves operate under air pressure. Such compressors can be equipped as one, and several cylinders, located V-shaped, as well as W-shaped way. Two-stage compression technique is used to increase the working productivity of the reciprocating compressor system..
Reciprocating compressor
Choosing a compressor for painting
Before you choose, will become a very necessary and important fact, equipped with a stand-alone supercharger (fuel) or electric transmission. Distinguishes their indicator - the mobility of the unit.
Autonomous installations, running on gasoline or diesel fuel, are completely mobile and quite convenient in the absence of a source of electricity. Electric drive, in turn, more economical in terms of power supply availability, but there is a binding to the "lace" everywhere. Also for high-quality painting it is necessary to choose the right compressor with a good spray gun.
Pneumatic spray guns are assembled using a variety of technologies. You need to consider this information beforehand, how to choose settings, since the device is selected, based on the performance of the spray gun. With the wrong unit, without taking into account the necessary parameters, quite possible, changes in the working pressure due to which the quality factor of painting will drop significantly. exept this, it is better to take into account the working pressure.
Why do the wiper blades creak??Characteristics of compressors
Standard compressor operating compression is limited to 8 atmospheres, typing which it automatically shuts down, and the signal for inclusion is standard 6 atmospheres. Reaching the mark in 6 atmospheres, the compressor runs and replenishes the lack of air. For painting purposes, it is most practical to choose a receiver with a volume 24-50 liters. Also, needed and brought to the place, the unit of emergency shutdown of the unit at overloads.
Calculating the parameters of the gun for painting, as well as your preferences for quality and efficiency, perhaps, make the final choice of compressor for car painting.
Many industries use compressed air as the main energy source, has large areas of application. Compressors of three classes are constructed:
- Household compressors - it is desirable to choose them for non-permanent use, the duration of continuous operation is close 15-20 minutes / hour, as well as the applied operating pressure, not exceeding 8 atmospheres. The volume of the receiver of this type of units varies from 6 to 100 liters, however, it is absolutely not suitable for continuous work.
- Semi-professional compressors - also unsuitable for continuous operation, the duration of use should never be longer 40 minutes / hour, at the same time the applied working pressure reaches 16 atmospheres. The standard set volume of the receiver from 50 to 100 liters. Their main advantages include the simplicity of the design and affordable prices. Most often involved in the work of small industries, as well as service stations, tire fitting and so on.
- Professional (industrial) compressors - quite powerful industrial equipment, which is most often used in large enterprises. The unit has great capabilities and performance, suitable for long and hard work. The volumes of the receiver of this compressor from 25 to 900 liters. You can find out the characteristics and approximate prices from our partners.
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