Dynaprecipitor Water Wash Spray Booths
Dynaprecipitor Water Wash Spray Booth handles a larger variety of paints in a wider range of viscosities and drying speeds, at higher production rates than any of the conventional spray booths.
This booth employs two well-known engineering principles to remove paint particles from exhaust air in painting operations. First, by drawing air through a continuous curtain of moving water, suspended paint particles are scrubbed out. Second, when air carrying paint particles makes a sudden change in direction of flow, centrifugal force slings the solid particles out of the air stream (called impingement). Entrained paint particles are thrown against adjacent walls and curtains. Water then flushes the particulate into the collecting pan. Through these two actions the air reaching the exhaust stack is virtually free of airborne particles keeping the stack area cleaner longer.
The wash water should be treated (compounded). This causes the paint particles to coagulate and allows convenient skimming when cleaning out the collection pan. It is recommended that the end user enlist the support of an experienced chemical supplier that will provide the paint testing required to support the chemical treatment for controlling the pH, foaming and detactifier agent to enhance the performance of the water wash equipment.
Correctly engineered water wash spray booths provide an extremely efficient means for removing paint particles from the exhausted air. In addition, they are the most acceptable type of spray booth for all health, fire, and building codes.
Construction Features
These booths are constructed of 18-gauge galvanized panels for field assembly:
- An upper and lower wash chamber
- Large capacity collecting pan
- Slotted water intake pipe to insure sediment free water
- Circulating water to maintain a constantly flushed system
- Removable manifold for easy maintenance > Hinged water curtain to allow easy access to the rear of the collecting pan
- Access door located just below the fan for easy maintenance
- External float box with level control
The booth saves floor space. Its short-depth wash unit gives water-wash-spray-booth advantages while occupying conventional booth space.
An automatic water level control supplies make-up water to compensate for evaporation losses.
Upper Centrifugal Wash Chamber:
Here, most of the paint particles are separated from the exhaust air. This separation is accomplished by centrifugal force on the paint particles as the air abruptly changes direction of flow while simultaneously being forced to pass through powerful water sprays.
Lower Wash Chamber:
In the lower wash chamber, the exhaust air must pass through an unbroken curtain of water. Again, water scrubbing and centrifugal force combine to remove the remaining paint particles before the air passes to the exhaust chamber.
Recessed Drain:
The recessed drain supplied insures complete removal of water from the collecting pan. This feature simplifies the cleaning operation.
NOTE: Check with local codes for disposal.
Floor Type Models
Dynaprecipitor / Style E
Stacks and Fan:
Paint particles practically never reach this zone. The stack area stays cleaner longer.
Exhaust Air Washed 4 Times:
Paint particles are scrubbed out and trapped in collecting pan.
Access Door:
Allows for easy inspection, repair, or replacement of the fan parts.
Unbroken Water Curtain:
Manifold-deflector plate assembly disperses water evenly and can be easily removed without special tools.
Circulation System:
Circulating water forms a continuous, constantly flushed system that has no sediment-accumulating dead ends. Rate of water flow is quickly adjustable. No new water need be added except to compensate for slight daily evaporation.
Booth Stays Cleaner:
Every paint-collecting surface is water scrubbed.
Clog-Free Water Circulating System:
Intake pipe is above the pan floor to assure a sediment-free supply of water. System is self-flushing.
Easy Maintenance:
Hinged front water curtain permits easy skimming of coagulated paint particles from collecting pan. Optional automatic centrifugal separators are available.
Ordering Notes (Applies to all Models):
- Wash chamber works equally well in both "Crossdraft" and "Downdraft" booth configurations.
- Right Side water level control valve and drain outlet are standard. Left side and Rear available are on special order.
- Top exhaust is standard. Consult if more than 25 feet of exhaust duct is required.
- Outside mounting of exhaust blower on heavy gauge steelstack available on special order.
- TEFC motors are standard. Motor starters and explosion-proof motors are available.
- Chemically treated water will remove the paint from the water to a collection unit for removal (optional).
