Application Area:
These types of filters are used mainly for filtering of process lubrication coolant that
take kerosene as their base oil and used for nonferrous plate/sheet, strip and foil cold
rolling mills. It is key equipment to guarantee the enough filtration for process
lubrication coolant and thus ensure the surface quality of the rolled products can
meet the technical requirements. 

The main features of this series of filters:
· The usual filtering method of common filters is that the liquid to be filtered
passes through a filter medium with a certain pores and the filtering precision
is dependent on the size of the pores. For this series of filters, the required
filtering precision and capacity is realized by using an injection pump with a
certain negative pressure to spray the filter aid such as diatomaceous earth
onto a special filter medium and then letting them deposit to form a filtering
cake with a certain thickness. As the filter aid is added continuously during the
whole process, the filtering precision can be guaranteed from the beginning to
the end and thus the filtering precision and filtering efficiency is increased
greatly.
· The filtering process of this series of filters machine is carried out in a multilayer
rectangular plate type filter box in a parallel mode. The quantity of layer
and stack of filter box can be increased and decreased according to the
medium flow. The filtering flow of this series of products can be adjusted within
the scope of 150-9000 L/min.
· This series of filters is vertical design, and the integrating the filter screen, filter
paper (adhesive-bonded fabric) and filter aid into one body makes their
structure compact and overall dimensions small.
· The filter steel structures and profiles shall be subjected to antirust treatment.
· Comparing with the same kind of domestic filters, standard parts are selected
for its all control valves, and PLC automatic operation is applied to filtering and

blowing processes, which makes operation reliable, commissioning,
maintenance and service convenient.