FEATURE INDUSTRIAL CLEANING
PROCESS RELIABILITY in aqueous parts cleaning
An innovative aqueous cleaning process can handle tasks from coarse to fine cleaning, ensuring superior process reliability, shorter idling times and significant energy savings
A
n innovative system has been developed by Dürr Ecoclean for aqueous cleaning processes which can handle tasks from coarse to fine cleaning in an efficient manner. EcoCWave ensures superior cleaning quality and process reliability, shorter idling times and major energy savings. Aqueous part cleaning with alkaline, neutral or acidic media ranks among the most widely employed technologies in many industries. Application levels range from coarse to intermediate and ultimately fine cleaning. EcoCWave which supersedes the Universal 81W line covers the entire application spectrum thanks to its modular, forward-looking technology. With its very small footprint the system can be integrated in any production process and is easily adaptable to changing cleanliness and throughput specifications.
SUPERIOR CLEANING QUALITY The EcoCWave is equipped with two or three flooding tanks depending on customer specifications. The tanks exhibit a flow-optimised rounded geometry and are of upright design. Unlike the low-mounted rectangular
containers used in conventional aqueous cleaning equipment, the round tanks prevent the formation of chip and dirt traps. Improved cleaning quality and a longer service life of the cleaning fluid result. Moreover, each tank has its own separate fluid circuit comprising full-flow filtration. The cleaning and rinsing fluid is filtered on filling and draining as well as in the bypass. Bag or cartridge filters can be fitted in a
combination-type filter housing. The system's filtration characteristics can thus be adapted to changing cleanliness requirements quickly and without any hardware modifications. A further contributor to improved performance is the optimised rollover unit in the working chamber. It ensures that the fluid and mechanical cleaning devices eg ultrasonic units and spraying nozzles can reach the product effectively from all sides; the design of the rollover unit minimises fluid drag-out. Powerful pumps and large diameter
10 NOVEMBER 2014 | FACTORY EQUIPMENT
work chamber filling levels may be defined in immersion processes eg with filling and draining cycles suitable for cleaning parts having blind holes or complex geometries. An intense fluid exchange in critical component areas substantially boosts the system's cleaning performance. In spraying processes the jet strength can be adapted exactly to the part being processed. Moreover, the ability to control the spraying pressure expands the range of cleaning agents that can be used. Continuous reconditioning of the
rinsing fluid is provided by an Aquaclean system which can be integrated into the machine. The cleaning fluid in the first flooding tank is heated entirely by waste heat from the evaporation process.
ADAPTABLE BATCH VOLUME EcoCWave has a vacuum-tight work chamber designed for batches measuring up to 670 x 480 x 300 mm. Alternatively an enlarged work chamber for 670 x 480 x 400 mm containers may be installed without enlarging the footprint. The volume adapted batch
piping used throughout the EcoCWave accelerate the operations of filling and draining the work chamber and tanks.
REDUCED PER UNIT COSTS As a result non-productive times are minimised, product throughput is increased and per unit cleaning costs are reduced; benefiting spray cleaning processes. Here, an increased number of nozzles working in optimised arrays deliver a more effective cleaning performance and hence shorter cycle times even in removing coarse contamination. In order to shorten cycles still further, the vacuum drying system available in addition to hot-air drying has been improved.
EQUAL TO ANY CLEANING TASK Due to the use of variable frequency driven pumps volumetric flow rates can be adjusted precisely as needed. Major energy savings are achievable as a result. On the other hand, the cleaning process can be selectively adapted to meet specific requirements. Thus, different
Round tanks prevent the formation of chip and dirt traps, resulting in Improved cleaning quality and a longer service life of the cleaning fluid
configuration reduces per-unit costs.
PROCESS VISUALISATION A colour display with self-explanatory pictographs makes the EcoCWave easy, fast and reliable to operate. Diverse process data including the work chamber fluid level are indicated in real time by the built-in process visualisation system. An acquisition of all relevant process parameters (eg for the development of cleaning programs) can be implemented.
SPACE-SAVING AND OPEN TO MODIFICATION Apart from its high performance Dürr Ecoclean's engineers focused their attention on minimising the system's footprint. Accordingly, a machine configured with two flooding tanks needs only 1.8 sq.m. of floorspace. EcoCWave features a stylish appearance
with integrated loading system and all- round safety-glazed enclosure.
Dürr Ecoclean T: 01926 474080
www.durr-ecoclean.com
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