Automatic Backwash Filter Housing

An automatic backwashing filter is a kind of filter that can provide a wide range of comprehensive use for industrial, it can guarantee the purity and reliability of filtrated liquid.  It is suitable for filtering particulate impurities in high-flow, high-velocity, and low-viscosity fluids.

This filter provides fully automatic backwashing cleaning operations,  it can continuously separate impurities from water - other liquids. The maintenance - operation of the filter is very simple, even in severe operating conditions it also can continue to keep running in a good condition.

The pressure design of the filter body is usually based on the chemical pipeline filter - steel pressure vessel design standards. The filter also can adapt to the special requirements of other design criteria. The filter main body has the materials such as carbon steel, stainless steel, - duplex phase steel - etc.

The functionality of the backwash Filters

Filtration Stage

The medium flows through the filter element either from inside to outside or from outside to inside. Here the dirt particles are retained and the cleaned medium reaches the filter outlet. When the differential pressure reaches a certain value, a signal is transmitted from the differential pressure indicator to the control unit, which automatically triggers the backwashing process.

Backflushing Phase

When the differential pressure reaches a certain value, the differential pressure indicator transmits a signal to the control system, which automatically triggers the backwashing process. During backflush, the dirt particles are flushed off of the filtration surface by filtered fluid reversal of flow (own medium or through an external flush medium, compressed air, or service water).

Application

The backwash filter is a mechatronic product with the advantages of reasonable design, high filtration efficiency, low operating cost, and continuous filtration during backwashing. 

It is widely used in metallurgy, the chemical industry, electric power, oil field reinjection water, ship ballast water, seawater utilization, environmental protection water treatment, and other fields.