Expansion tube type filter, can be used for primary and rapid filtration of suspension liquid with low solid content, the water quality after separation is good, can be discharged according to the requirements, or used as industrial water to be recycled. The product is corrosion resistant, anti scaling, novel filter element structure, automatic recoiling cleaning filter screen, can be widely used in smelting, chemical industry, mineral processing, environmental protection and other industries conditions mean solid-liquid separation; It is especially suitable for the rapid separation of by-products in the field of environmental protection, such as the treatment of flue gas from coal-fired boilers, the desulfurization of acid exhaust gas from smelting and the treatment of acid industrial sewage. With the advantages of compact equipment, low investment, continuous operation and automatic control, it can replace the imported gore filter.
Expansion tube filter is mainly composed of cylinder shell, tube grid plate, bag filter membrane, membrane support cage frame, and matching pneumatic control valve, exhaust valve, liquid level gauge, pressure gauge and automatic control system. It is for low solid content in slurry separation, can effectively control was carried out on the water quality after separation, with all kinds of vacuum filter, such as plate and frame filter press or drum centrifuge are combined filtering, to decrease the residue water content, so as to make full use of the merits of different separation technology, overcome shortcomings, through reasonable combination and automatic switch in order, Achieve the purpose of high efficiency, energy saving and continuous work.
Bilge shares principle
Through the innovative design of the filter medium (bag-shaped filter membrane) and the supporting cage frame structure, the filtration and regeneration performance of the filter membrane is improved, and it changes into different geometric shapes in different working states. The filter medium is a bag filter membrane, whose surface can be composite modified by porous polytetrafluoroethylene membrane, and the support cage of the filter membrane is designed into a multi-node concave cylinder.
When the filtration working state, the filtrate is driven by the pump, so that the supporting filter medium on the cage frame is compressed, the pores are appropriately small, to ensure the normal operation, the clear liquid passes through the filter medium into the bag and is discharged upward, the solid material (filter residue) is intercepted by the filter medium outside the bag; When the filter cake conjunctiva makes the pressure difference between inside and outside the filter medium rise to the set value, the backwash cleaning is carried out. The filter medium expands from the filtrate level difference potential energy into a multi-node drum. Under the action of the pore expansion and the backwash potential energy, the filter cake conjunctiva layer accumulated on the filter medium is easy to clean, so that the filter medium can be regenerated quickly and effectively.
Performance characteristics:
A. Modified bag filter membrane, non-hardening, easy to clean, filter liquid quality is good, filter membrane material model can be widely selected.
B. Innovative expansion and drum structure, good regeneration effect of filter medium, strong adaptability of filtrate and high working efficiency.
C. It can be combined with drum, pressure filter or centrifugal and other separation equipment for filtering, which is highly complementary.
D. Perfect measures of corrosion resistance, wear resistance and scale prevention, automatic sequential switching, compact equipment and low investment.
