design principle：
Modular backwash filter, based on modular concept design, consists of several standard filtration units into a fully automatic filtration system.
When the liquid passes through the filter unit, the particulate impurities are intercepted on the outer surface of the filter element and accumulate to form filter cake,
which gradually enlarges the inlet and outlet of the filter unit. When the pressure difference reaches a preset value, the filter cake reaches a certain thickness. At this time,
the filterable flow of the filter element becomes smaller and smaller. The controller starts backwashing action and the liquid is backwashed away from the inside of the filter element.
Surface impurities (or external water diversion for backwashing).
The system has high safety factor, flexibly increases the number of on-line units according to flow requirements,
automatic operation, no manual cleaning, strong expansibility, external high-pressure backwashing fluid, low pressure differential work,
high-precision wedge screen filter element is used, backwashing is complete, backwashing consumes less liquid, manual cleaning filter element is needed when filtering difficult impurities,
which is easy to start-up and maintain, and is water and low-viscosity liquid.The efficiency of bulk filtration is preferred.
technical parameter：
Pressure differential setting range：0.02-0.16Mpa
Switching differential pressure setting range：0.035-0.15Mpa
Setting range of backlash time：0-1800S
Backwash water consumption：Lower than 0.5%-1% of filtration water flow
Pressure required for backwash：Not less than 0.2Mpa
Wide range of flow：30-1000m3/h。
Filtration accuracy：30-2000μm。
configuration option：Quotation needs to be designed and selected on demand
Product characteristics：
1. Extensive, single filtration system can achieve 2-24 filter units, flexible installation of horizontal and vertical.
2.Non-contact reverse cleaning can remove impurities better.
3. Continuous on-line filtration to reduce downtime maintenance costs.
4. Stable low pressure differential is less than 0.01MPa during cleaning and sewage discharge.
5.Non-contact cleaning, particle impurities will not be squeezed out of the filter element, the effect of impurity removal is excellent.
6.Internal backwashing filtration flushes the filter element by backwashing the clarified liquid after filtration and flushes the dirt to the discharge header at the bottom of the filter to remove it.
7. Fully online filtration system, suitable for continuous operation without interruption, single system with large capacity up to 800m3/h, smooth pipe and nozzle connection, no dead angle and low pressure loss.The material and precision of the filter element can be widely selected to meet different application requirements.
8. Filter element type: wedge screen filter element, wire screen filter element, etc., online continuous filtration, no need for one device, reduce investment costs, internal backwashing is suitable for low viscosity, operating pressure is not less than 2Bar fluid filtration.The unique tee, full port valves allow fast and frequent backwash operations while maximizing backwash energy during the backwash process.
9. Working mode: fully automatic, manual (can be switched at will)
Application Industry：
It is suitable for liquid filtration with large flow rate, high filtering accuracy and impurities such as fibers and colloids.Such as: white water reuse in paper industry, process water, spunlaced nonwoven circulating water, additives and raw materials, petrochemical, chemical plant circulating water, condensate, cooling water, spray water, needle water, petrochemical diesel, gasoline, naphtha, FCC slurry, AGO atmospheric gas oil, CGO tar, VGO reduced pressure gas oil filtration.