Paint-drying chamber: device, installation and maintenance by one's own hands

The paint and drying chamber is a closed room equipped with special equipment where painting works are carried out in accordance with the established fire safety standards. The chamber is not only painting the car, but also drying them, which is also performed based on the installed technology.

Design Features

Most often, spray booths are necessary when equipping car service centers and plants where machinery is manufactured. Separate cameras allow you to rationally use space and speed up the technological process. The device of the painting and drying chamber is simple:

1. The closed chamber in which coloring is carried out, drying.
2. Fresh air ventilation system, which is additionally equipped with filters.
3. Heat generator.
4. Extraction system with additional air-type filters.

Features of work

Paint and drying chambers for cars work on the basis of regulation of turbulence and air pressure in the room. For this purpose, a special system is used, which optimizes air circulation. As the filter is used, the filters become dirty, therefore, drops of paint can accumulate in the air. To avoid these phenomena, it is necessary to regulate the air pressure inside the chamber by the correct arrangement of floor and ceiling filters evenly throughout the chamber.

The paint and drying chamber is equipped with doors that are characterized by good tightness when closing. The inner walls are often painted with a stable white compound - it allows you to control the degree and intensity of the color of the product. Inside the chamber is also covered with polymers and powder coating, which is characterized by its durability and durability. Special double walls of the drying chamber have an interlayer in the form of a heat-insulating layer, resistant to fire. This prevents heat loss during drying and painting.

Compliance with safety standards

The paint and drying chamber is a high-risk room in terms of fire safety. That is why when designing the cameras, the rules for the installation of electrical equipment must be taken into account and construction norms must be observed.

Whatever the size of the camera, it should be equipped with high-quality explosion-proof ventilation systems. To create the room itself, heat-insulating non-combustible mineral materials are used. Another mandatory element is the fire fighting system. Since the temperature regime is created by the heat exchanger, it is important to equip it with a thermostat, which, if necessary, simply turns off the power. When designing electrical equipment it is important to ensure and protective earthing.

Features of the installation

Installation of the paint and dryer chamber, as a rule, is carried out in two ways. The first involves the installation of equipment on a prepared base of concrete with a light ribbon foundation at the floor level. This way of installing the camera is simple and reliable, but not cheap. The second method involves mounting the camera on an elevated metal structure made of profiled metal. This method is cheaper, but the height of the floor of the camera and the shop itself will be different, so you will need to install transitional ladders or bridges.

If a painting and drying chamber is created with their own hands, great attention should be paid to the ventilation system equipment. Ideally, there should be no dead zones in the room, and therefore the circulation and arrangement of special valves must be properly designed, which will maintain the pressure at the desired level. It is important that solvents, aerosols are effectively removed in the room, therefore the air flow should move no more slowly than 20 cm per second.

Attention to the heating and lighting system

The paint drying chamber operates on the basis of a heat exchanger, which is additionally equipped with a thermostat. A heat exchanger made of stainless steel with high temperature stability is created. The type and shape of the models depends on the design features of the burner, which controls the automatic unit. Heat generators are represented in three types: with diesel, electric and gas heating. The electric model is rarely used, because the heating and cooling of the chamber is too slow.

The generator with a gas burner is characterized by stable operation, but requires a long design and further coordination. The most stable option is the use of a diesel heat generator, the installation of which does not need to be coordinated.

Painting and drying chambers for cars should be equipped with at least 10 lights located in the ceiling at an angle of 45 °. If high-quality painting is required, the lighting equipment must be installed in the side walls. This lighting is sufficient to ensure that the surface to be painted is processed neatly, evenly and finely. The standard size of illumination is 1000-2000 lux.

Selection of air filters for the spray booth

The spray booth must be equipped with a ventilation system with filter elements that can change. And they should be replaced as quickly and simply as possible. From the design point of view, the filters for the painting and drying chambers must be located evenly over the entire working surface of the chamber and the ceiling. The most popular filters are for cleaning the supply and exhaust air. According to the norms, the degree of cleaning of filters in the chamber should not be less than 99%. To achieve this efficiency, it is advisable to install two filters or multi-stage systems. The essence of their work is that in the first stage, air is purified from large particles, and then finely dispersed fractions and volatile compounds are purified. The lower filter should not be installed on the exhaust duct, as it will quickly become dirty, and it will have to be changed frequently.

Types and features of cameras

The production of painting and drying chambers is carried out in various ways from the point of view of heating and ventilation. For example, depending on the type of ventilation system, three types of cameras are distinguished:

1. With increased pressure.
2. With the passing flow of air.
3. With rarefied air.

The most popular models are with increased pressure, since they are equipped with a more efficient blower fan.

All spray booths work in several modes:

1. Painting.
2. Excerpts.
3. Drying.
4. Purge.

In the painting mode, the camera heats up to the temperature at which the car or product is painted. The optimum color temperature is above 20 °. The coloration regime is quickly replaced by drying, during which the air is cleaned of solvent residues within 15 minutes. In the drying mode, the fans turn off and the chamber operates in the recirculation stage, forming a varnish matting and promoting the formation of an explosive mixture. Drying is performed at a temperature of 60 °.

After 30 minutes the burner switches off, the air damper closes and the purge mode starts. Purge is performed by supplying external air into the chamber, then after 5 minutes cooling ends and the fans are switched off.

Popular Models: Saima

The spraying and drying chamber Saima is used for painting and further drying of cars, minibuses, mini trucks. This OSK can work with different types of paint and varnish materials. Walls and ceiling fences are made of sandwich panels filled with polyurethane foam. The standard equipment of the zero cycle consists of a rectangular pit in which the frame is mounted. It can be manufactured on an individual project.

The Saima paint and drying chamber consists of wall panels that are characterized by increased heat and noise insulation. Cleaning filters are located along the entire length of the ceiling, and lighting is done by 12 lamps. Additional equipment is represented by a diesel torch Riello.

Chambers "Krost"

The painting and drying chamber created by the brand "Krost" is electric. The model is presented in four possible variants: SK-1, SK-2 and SK-3, and SK-4 are two independent cameras, which are separated by a thermal shutter. If it is closed, you can paint two cars at once, if open - one large truck. The internal volume of the camera is equipped with luminaires, which ensure a uniform illumination of the entire system. Heated air is immediately cleaned by a filter system, and uniform and rapid drying of the surface is achieved by using a heated indoor heating system.

The design of the chamber consists of finished sandwich panels with filling in the form of basalt fiber. Heating of air is carried out by the heating ventilation plant from the supply, exhaust and heating units. The control system works in several modes.

Nova Verta cameras

The paint and drying chamber Nova Verta is a design that is distinguished by well-thought-out technological solutions, reliability of work, automatic maintenance of production conditions, as well as wall strength and effective thermal insulation. In the chamber you can process both cars and individual parts. Model Nova Verta Prestige of Italian production allows you to paint the car in full or in parts. These cameras are considered to be among the best and most perfect in the world, differing:

1. A high level of illumination in the painting area: it can reach 3000 lux.
2. A four-stage filtration system that powerfully cleans the air and keeps the camera clean.
3. The cabin consists of panels 40 mm thick, which are additionally insulated and covered with a special anti-glare composition.

Features of the service

Maintenance of painting and drying chambers with their own hands has a number of features that must be taken into account:

1. Do not use the camera without a fuel filter.
2. Do not operate the camera if the pressure inside it is negative.
3. When using the camera, you need to pay close attention to the scheduled maintenance work, cleaning, replacing consumables and so on.
4. Do not use the camera at a temperature higher than the recommended temperature.
5. The camera should only be used if the expiration date has not been reached. Replacement of filters should be carried out in a timely manner.
6. When the camera is operating, do not open the service doors of the supply and exhaust ventilation group.
7. When operating the camera, you can not disassemble the control panel, since it can be repaired only by service centers.
8. When working with the camera, you need to use special clothing, respirators, so that dust particles do not get to the surface of the car.

If you need to replace the filters during the operation of the camera, you need to remove the grilles under which they are located, remove the old filters, insert the new models with the desired side down. It should be remembered that with any replacement of filters it is required to control the air in the OSK body using an internal pressure gauge.