Filter units / Filter stations - overview​​
Classification
Filter units / filter stations are individual filters or combined filter stations consisting of one or more filters, with pumps (filter pumps).
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Construction
As a rule, filters are combined with pumps, whereby the filter is mounted on the suction or discharge side of the pump. These components are used as a unit in a filter station. Depending on the application and location, the design is application-specific. The filter container can be designed as a filter housing with a removable cover, or a hinged cover. Multifunctional filters, screw cap filters or quick-change filters are also possible.
In the case of finished filter stations, the filter housing is completely piped and mounted on a base frame ready for connection with a magnetic centrifugal pump.
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Functionality
The filters either filter unwanted particles from liquid media or filter a desired product from a liquid.
Here, the liquid flows through the filter by means of a pump, the dirt particles remain in the filter medium and the cleaned liquid is conveyed further.
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Power range
Plate filter station:
Plate filters are specially designed for applications where a large filter area and/or a high dirt-holding capacity is required
Pressure: 0 to 6 bar
Flow rate: 0 to 120 m^3/h (larger quantities on request)
Cartridge filter station:
These filters are characterised by a high dirt-holding capacity with a high filter flow rate and low pressure drop
Pressure: 0 to 6 bar
Flow rate: 0 to 72 m^3/h (larger quantities on request)
Bag filter station:
These filters are characterised by a high dirt holding capacity with a high filter flow rate and low pressure drop. They are suitable for the retention of large particle concentrations.
Pressure: 0 to 6 bar
Flow rate: 0 to 18 m^3/h (larger quantities on request)
Highflow filter station:
These filters are characterised by a high dirt-holding capacity with a high filter flow rate and low pressure loss. They are therefore suitable for filtering high pressure flow rates with low flow resistance. The integrated support body minimises the amount of material to be disposed of.
Pressure: 0 to 6 bar
Flow rate: 0 to 75 m^3/h (larger quantities on request)
Multifunctional filter station:
These filter housings are characterised by a high degree of flexibility; cartridge, bag or plate filter inserts can be used, as well as a filter basket with adsorber material.
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Pressure: 0 to 6 bar
Flow rate:
- 0 to 20 m^3/h (cartridge filter insert)
- 0 to 13 m^3/h (plate filter element)
- 0 to 14 m^3/h (bag filter cartridge)
- 0 to 3 m^3/h (adsorber filter element)
Adsorber filter station:
These filters have a basket insert with adsorbent material, which acts as a filter for emulsified oil or tin sludge, for example.
Pressure: 0 to 1 bar
Flow rate: 0 to 3 m^3/h (larger quantities on request)
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Applications
Centrifugal pumps with magnetic coupling made of plastic or stainless steel are mostly used as transfer pumps or circulation pumps. They are used in numerous processes, often in the use of environmentally hazardous, corrosive substances or liquids, such as acids, alkalis or chemicals in general.
Normal-priming centrifugal pumps are not self-priming and therefore require a certain pre-pressure (usually realised via an inlet head) in order not to fall below the required NPSH value.
The special impeller geometry of the centrifugal pumps from Sager+Mack offers advantages in the area of contaminated media with solids content. This impeller geometry also produces a relatively flat pump characteristic curve, which provides process advantages in many applications.
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Sealing technology
The sealing is done with suitable sealing materials (e.g. EPDM, FPM or FEP coated).
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Materials
Plastic (PP/PVDF), stainless steel (V4A), other special materials on request
All parts in contact with liquids are, after prior design, media-resistant incl. the matching sealing materials.
Use of activated carbon paper or washed-on activated carbon is possible.