Paint booth is a solid requirement for paint spray. Regardless if its dry or wet, there’re different ways of construction and choice of materials. From supplier side, they might just offer you a standard product. But if we know better of our actual application, we can custom make it to fit better with our production and even save some costs.
So first let’s see what kind of booths available. From point of view over functions, there’re water curtain booth, dry filter booth and car paint booth. Each type booth provides various designs to fit with various installations. Following we will introduce each type configuration and how or when we will use the specific model.
Dry filter paint booth
Dry filter is a general description. In fact there’re different filters to use and different installation. The materials available as payper filter, pearl cotton and fiber cotton filter. The usage of the two depends the actual booth design. For example if its on automatic painting line system, it’s normally configured with automatic chain conveyor. If we use dry filter booth, then the total depth is short and conveyor is very close to booth wall. Either we spray by fixed spray gun or robot arm, waste paint is mainly collected on booth wall side, thus we need to use multi layers paper filters and pearl cotton with wall installation. By this way, maximum airflow will be guaranteed and most waste paint will be collected on filters.
But if it’s a stand alone paint booth system(or manual paint booth), the waste paint collection is mainly at bottom side. If we use payper filters, we can not make full use of its advantages. Instead, we will use fiber cotton filter and install at booth bottom(it’s held by a frame with good ventilation below).
The biggest advantage of dry filter booth is there’s no waste water consideration and it has no special requirement for booth material. For example when we have to consider rust and corrosion issue for water base design. But no such worries for dry filter booth, thus we don’t have to choose extremely high grade stainless steel structure and cost will be reduced.
Water base paint booth
Water booth also come with various designs such as the water curtain layout and water tank type etc. There’s big difference between manual and automatic booths. Here we briefly explain with few design sketch.
Manual paint booth available for single and two operator stations design. By this way, water curtain is available on three side walls(see below sketch). Because when manual spraying, spraygin may target from different positions, thus water curtain needs to be maximum available to collect waste paint to maintain a clean environment.
Automatic booth is configured an entrance and exit door for conveyor system. Spray gun is mostly targeted on same direction thus water curtain is very close to spray gun so paint fog can be collected easily. Besides this traditional setup, automatic booth water curtain can be also from underside. This option is available when there’s a belt conveyor pass through spray booth and robot is spraying above conveyor system. When spraying, paint fog is exhausted from underside directly with water filter. It’s probably the most clean setup. However, no matter how its designed for water base booth, we need to clean up solid wastes regularly from back side open tanks. If we don’t clean up schedulely, the water pump and tube system will be stuck easily and finally we have to replace.
For water booth, the minimum requirement for construction material is stainless steel 201, if paint is corrosion, we should use stainless steel 304 to work properly. And the most important is we must weld properly and make sure no leakage.
So in order to select a suitable booth, we need to evaluate our production requirements carefully then choose the most suitable model between costs and efficiency.
