Jiangsu Sanhe Environmental Protection Group Co., Ltd.
Jiangsu Sanhe Environmental Protection Group Co., Ltd.
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Automatic Differential Pressure Filtration For Water Purification
Product Overview
The Automatic Micro-Differential Filter for Water Purification is a high-efficiency filtration system that integrates automatic monitoring and self-cleaning. It uses differential pressure control to detect the pressure drop across the filter and automatically initiates a backwash process once the preset threshold is reached—ensuring continuous, stable filtration without manual intervention.
Working Principle
Raw water enters the filter housing and passes through a stainless-steel mesh element. Impurities are trapped on the filter surface, while clean water flows out. As contaminants accumulate, the pressure difference increases; once it reaches the preset value, the control system opens the drain valve and activates the backwash mechanism. High-velocity reverse flow flushes away impurities, achieving online cleaning and uninterrupted operation.
Main Components
Filter housing and internal filtration unit (carbon steel or stainless steel)
Stainless-steel filter element
Differential pressure sensor and control module
Electric drain valve and backwash assembly
PLC automatic control system
Fully automatic operation without shutdown
Real-time pressure differential monitoring and auto backwash
Reusable filter element with low maintenance cost
Unattended operation and remote monitoring capability
Energy-efficient and suitable for multiple water qualities
Widely used in water purification plants, RO pretreatment systems, industrial circulating water, cooling water filtration, and municipal or building water supply.
Optional Configurations
Customizable filter precision and mesh type (wedge wire, sintered mesh, perforated)
PLC + HMI touchscreen control system
Dual-mode trigger (pressure/time) for backwash
Remote monitoring and communication (Modbus/RS485)
Skid-mounted or multi-unit parallel installation options