Backwash stage principle

When a certain pressure difference is reached, or the system automatically enters the backwashing state within the set time, the controller controls the valve to change the direction of water flow, the one-way diaphragm at the bottom of the filter closes the main channel, and the backwash enters the four groups of nozzle channels, and the nozzle channel The water pressure in the connected piston chamber rises, the piston moves upward to overcome the pressure of the spring against the lamination, and the piston space is released at the top of the lamination stack, while the backwash water flows from the nozzles above the four nozzle passages in the direction of the tangential line of the lamination. Spraying, the laminations are rotated and evenly separated, and the spray water sprays the surface of the lamination, and the impurities trapped on the lamination are sprayed and ejected. When the backwashing is over, the direction of the water flow changes again, the laminations are again compressed, and the system re-enters the filtration state.

Specification of DLLF-2-2

• Application:Agriculture Irrigation
• Working pressure: 2-10 bar
• Working temperature:<85℃
• Water in/out: 2 inch
• Housing color:green/blue
• Dimension:900*820*1150mm
• Net Weight: 52KG Gross weight:96KG

Product structure

Design and selection of models

In 2002: Dawning Environmental Protection Technology Co., Ltd. was founded , which is a emerging technology company specialized in environmental water treatment.The main products include water filtration, water descaling antiscale,water heating for industrial and irrigation.
In 2010: The first patent awarded.
In 2014: We builded our own factory covering an area of 13000 square which is domestic largest water filter production base.
In 2015: Hunan Dawning Filter System Tech. CO., Ltd(CDFS) founded as subsidinary for foreign trade.
In 2016: Quotation System available
In 2017.1: Intergrated filtration system testing platform builded.
In 2017.3: Introducing automatic surface treatment equipment
In 2017.8. Expanding factory area to short lead time for customers.