Our painting cabinets, similarly to the walls, can, from the separation aspect, be of dry and wet separation types. In the cabinets, not only the painting but also the drying task is usually necessary. The cabinets are of closed design. The cabinets (both dry and wet ones) are equipped with a screening ceiling. That is through which the cabin is supplied with the appropriate amount of fresh air, and, in dry operation mode, the heated air gets to the cabinet through the screening ceiling. Regarding the setup of the cabinet, it can be of bag or drive through depending on the fact if they have door on both sides. The separation is usually of back side type. The best efficiency of suction is reached by the bottom position, obviously, if there is not enough space available, side suction can also be managed (with dry separation cabinets). In the phase of painting, the equipment, according to the relevant standards and requirements, blows the nominal 100% of air heated to the required temperature to the working space. From the working space, the air is discharged to the open air through the exhaust unit. In the phase of drying, the 90% of the air is returned to the feeding unit, whereas, with adding 10% fresh air to it, being re-heated, it is circulated back to the cabinet. At the end of the drying program, the system automatically stops. With that type of equipment in the drying phase, the air heater only heats 10% of completely and the remaining 90% of air is to only supply the heat loss of the cooling in the cabinet. The lighting in the cabinets is provided by neon lamps which can be installed either inside the cabinets or outside of them. If they are installed outside, the lighting is provided through the pasted glass.

Dry separation painting cabinet

Separation in case of dry type of separation cabinets can be provided by paint separator screening blankets. The screen blankets are placed on a screen holder, over which grating is placed. By lifting the grating, the filters can be replaced if they are worn. The screening system is connected with the air supply unit standing by the cabinet. The exhausted air is either discharged or supplied to the air supply unit (painting and drying phases) through the filter.

A dry separation painting cabinet may consist of the following auxiliary units:

• Insulated cabinet structure
• Lighting
• Entrance door with escape door
• Service door on the side of the cabinet
• Gas operated air supply unit with blow in fan
• Exhaust mechanical device with fan
• Discharge air technique
• Tail gas chimney
• Screening ceiling with filter and screen holder
• Paint separation system with screen blankets and grating

Wet separation painting unit

In case of wet separation cabinets, separation is managed by means of water. The wet paint separator system is created under the grating which consists of a water distribution canal, damped sheet and drop separator. Under that is a water collector tray of galvanised steel is placed. The mis-sprayed amount of paint is grabbed by the water on the trays under the grating. The circulating of the paint separator water is provided by a pump which transfers the water pumped from the tub to the canal placed under the grating. The canal helps create a perfect and constant water layer all along the surface. The air cleaned free from paint is discharged to the open air by the exhaust fan through the air duct and discharge duct. The fan transfers the exhausted air through the water curtain therefore the grabbed amount of paint is separated from the air and gets to the storage tank together with the water. If the water of the storage tub gets accumulated by paint with approx. 20-30% paint content, then the paint needs to be separated from the water (installation of separator).

A wet separation painting cabinet may consist of the following auxiliary units:

• Insulated cabinet structure
• Lighting
• Entrance door with escape door
• Service door on the side of the cabinet
• Gas operated air supply unit with blow in fan
• Exhaust mechanical device with fan
• Discharge air technique
• Tail gas chimney
• Screening ceiling with filter and screen holder
• Water collector canal and water storage trays
• Water storage tank
• Drop separator
• Circulating pump
• Grating and support structures