Filters and sieves are indispensable components in the highly complex process of paper manufacturing and finishing. GAW filter and straining systems provide solutions for a wide array of demands.
The ECO-R filter is used to filter agglomerates and contaminants from liquids, dispersions, emulsions, coating pigments and coating colours.
The medium to be filtered is conveyed through the upper intake, through the sieve blades of the strainer basket, to the outlet at the bottom of the filter. The coarse particles stick to the outside of
the strainer basket.
The strainer basket is designed as a slotted mesh insert or lasered perforated basket, depending on the application. Depending on the dimensions and field of application, the ECO-R filter is equipped with a varying number of blades or brushes made of carbon or metal.
The agglomerates and contaminants that adhere to the sieve basket are cleaned by the blades or brushes, conveyed to the filter bottom and introduced into the reject space. Optionally, the reject space can be designed as a lock, whereby the discharge of the agglomerates and impurities during continuous operation is possible.
The displacement body of the ECO-R filter reduces the working volume to a minimum and allows optimum flow conditions. The dimensioning of the filter is based on the flow rate, type of impurities and the viscosity and abrasiveness of the medium. Several filters can be interconnected to achieve necessary capacities.
The ECO-S filter is used to filter agglomerates and contaminants from liquids, dispersions, emulsions, coating pigments and coating colours.
The pressure filter system is composed of static filter elements that combine into one unit. The number of filter elements per filter station varies depending on the intended flow rate.
A filter element consists of a filter housing and a filter unit with mesh fabric. Developed for continuous operation, the ECO-S filter station is a closed filter system. The filter system has a function for recovering the residual medium remaining in the individual filter elements. In this way, the residual medium is recycled before the rinse and completely returned to the process.
The cleaning process of the filter station takes place in continuous operation. The dirty filter elements are temporarily switched off and backwashed.
The ECO-S filter is sometimes used for cleaning fresh process water. In this case, the dimensioning of the single filter is tuned to the flow rate of the pump.