Which spray booth is better?

Powder coating is applied in a special spray booth. It shuts off the powder application area from the rest of the production. It has a working chamber, a filter unit and a control panel.

They are very different. And sometimes it is quite difficult to figure out which camera you need. Therefore, we have prepared tips for choosing spray booths, following which you definitely cannot go wrong.

But first, about how the spray booth works.

It has a working chamber, a filter unit and a control panel. With the help of exhaust ventilation, polluted air with paint particles enters the filters. Particles larger than 10 microns are retained there. This powder is then sieved and reused.

Types of spray booths

Painting booths are single- and double-station, with different locations of transport and working openings, direction of air movement, bottom design and powder collection system.

There are chambers that themselves purify the air using filters or filtering tape. And there are those in which cleaning takes place through a special aspiration device.

Dead-end chambers are suitable for powder coating of individual products in small batch production. They are painted in such chambers by hand. There is only one opening in the chamber: parts are fed through it and painted.

Pass-through chambers are designed for painting on conveyor belts for medium and large-scale production. They have several openings: for the entry of parts and exit along the conveyor at the ends, as well as for painting along the wall. You can paint in them manually, automatically or in a combined way.

Two-station plants collect the powder first into a cyclone and then into a filter. They can sift paint with a vibrating sieve. The powder collection coefficient in them practically reaches 99%.

Single-station collects powder only through a filter.

Which painting booth to choose

So that you do not regret your purchase and wasted money, we suggest that you choose a powder paint spraying chamber following our advice.

1. Decide on the dimensions of the products that will be painted. Select the size of the chamber based on the dimensions of the largest product. Also measure the size of the area where the camera will stand. If you are going to paint small parts, then a mobile spray booth is the best solution for you.
2. Choose cameras with two lighting belts: upper and lower. There are devices with three lighting belts, but not everyone needs them. Lighting power must be above 1000 units. The light should be as natural as possible. The inner coating should be white and not interfere with the painter during work.
3. Give preference to devices that have the same area of ​​ceiling and floor filters. They provide the best air movement. There must be a pre-filter.
   For air exchange, a ventilation group of two fans with a power of 5.5 kW to 7.5 kW is needed. Chambers without an exhaust fan are much cheaper, but it will still not work without it, and you will have to complete the equipment later. The device operates in the mode of air intake and exhaust, as well as recirculation. In recirculation mode, provision must be made for the intake of fresh air to discharge the potentially explosive mixture. For effective removal of volatile particles, air movement at a speed of 20 cm per second is required. Therefore, the capacity of the device should be 18,000 – 22,000 m3 / h.
4. Look at the joining of the chamber walls to each other. It must be reliable, free of any defects. This will protect the camera from getting into hard-to-reach places of fine powder particles. The walls themselves can be made of steel or plastic. Choose the ones that you like, they do not affect the painting process.

And don’t forget to think about where and how the powder spray booth will be. It can be installed on a metal or concrete base. The second option is better: cheaper, more comfortable and more aerodynamically balanced. But it is imperative to make air ducts in it. A metal base should be used only in cases where a concrete one cannot be made in any way.