A wedge wire filter is installed on the filter equipment to achieve liquid and particle filtration. The wedge wire filtration is also known as the wedge wire candle filter and wedge wire filter screen. The wedge wire filter is made up of wedge wire or triangle surface profiles. It has continuous slots that supply large open space for filtration purposes. The fineness achieved using it is 20 microns.
The wedge wire filters are made from profile wedge wire. The wedge wires are welded and rolled to support the rods at a regular interval of time. This helps in providing maximum open space and offers strength and the best opportunity for filtration. The wedge wire filters are commonly used for the filtration of fluids and liquids in various industries. To name a few industries – petrochemical, food and beverages, chemical industries, cleaning or backwash systems, and wastewater treatment. The v-shaped profile wires provide the wedge wire filters an advantage of lowering the risk of plugging and clogging and along with that adds a self cleaning effect.
There is a tread at the top of the wedge wire filter that enables easy installation on the equipment. The bottom of the wedge wire filter is mostly taper or flat for sealing and it helps in blocking the particles that pass through it. It is also used for position and fixation. The material used in its making is stainless steel (SS 304, SS 316). The length ranges from 10”, 20”, 30”, 40”, and also has a customized option.
The wedge wire filter is made up of v-shape profile wire. It has a longitudinal support rod. Every point of intersection of these wires is fusion welded. This makes the filter have a sturdy construction and adds good mechanical properties. The support rod and profile wire can be radial wire or axial wire. The wedge wire filter mainly includes external direction filtration and internal filtration.
Depending upon the requirement and different usage, the direction of flow and shape of the wedge wire filter can be designed to meet the expectations and application requirements. The wedge wire filter can further be customized as a filter basket and filter tube depending upon the requirements of the client.
Features of wedge wire filter
Given below are the features of a wedge wire filter:
- Variety of end types and sizes
- High pressure resistance and temperature resistance capacity
- High efficiency of filtration due to large open areas
- Filtration fineness is 20-micron particles
- Non-plugging and non-clogging performance
- Easy to clean and low maintenance
- Long service life due to use of materials such as stainless steel
- High mechanical strength
- Design flexibility
Application of wedge wire filter
The wedge wire filter is popularly used for dive water pumps and deep well pumps. It is also used for the treatment of wastewater, food process, oil industry, water softening treatment, mineral process, alkali and chemical filtration, etc.
The wedge wire filter is also used in primary filters having a large difference in pressure and flow in different water treatment fields. This includes petrochemical water, boiled water, ship ballast water, and paper water.
The wedge wire candle filters are usually used as a pre-coated candle wedge wire screen (beer candles, vertical filtration elements) for clearing the kieselguhr alluvial filters or candle precoat filters of beer.