Self-cleaning Filter

Self-cleaning Filter

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Automatic Backwash Water Filter

Backwash Filter is excellent for cases where continuous water supply, automatic backwash cleaning and efficient impurity removal are required in heating, cooling and industrial circulating water systems.

Introduction

The fully automatic backwash filter is mainly composed of a cylinder, stainless steel filter screen, electric sewage valve and sewage discharge device. During operation, the backwash butterfly valve plate opens, and water enters the filter element from the inlet, flows through the filter screen and exits the system, with impurities trapped inside the filter element. When sewage discharge is needed, the butterfly valve plate closes, the sewage valve opens, and water flows into the inner side from the outer half of the filter screen. Part of the water flows back into the system from the outlet, while the remaining water flows into the inner side from the outer half of the filter screen and is discharged through the sewage outlet, achieving reverse automatic flushing of the filter screen.

Working Principle

Under normal conditions, the diverter valve opens, water flows through the filter screen and is discharged from the outlet. When the sewage valve opens, the total flow of filtered liquid increases, and the flow velocity rises, flushing impurities adhering to the filter pipe wall and discharging them through the sewage outlet. When the diverter valve closes and the sewage valve opens, water is forced to enter the outer side of the filter cylinder through the inlet mesh holes. Most of the water flows out from the outlet, while part of it enters the filter cylinder interior through the impurity collection mesh holes on the outer side of the filter, creating a backwash effect on the filter cylinder to remove impurities stuck on the outer mesh holes, which are also discharged through the sewage outlet.

Features

  • Fully automatic operation: No manual intervention required for filtration, cleaning and sewage discharge.

  • Uninterrupted water supply: Continuous water supply during backwash and sewage discharge.

  • Modular multi-core structure: Large filtration area and high dirt holding capacity, adapting to unstable water quality fluctuations.

  • Efficient backwash: Reverse flushing design thoroughly cleans impurities on the filter screen.

  • 反冲洗过滤器原理

Advantages

  • Automated backwash system: Modular design with forward filtration and reverse backwash, realizing automatic backwash function.

  • Intelligent control system: Reliable control unit ensures stable and efficient automatic operation.

  • High-performance precision filter element: Made of 304/316L stainless steel, with good corrosion resistance and long service life.

  • Overall structural advantage: Robust frame design ensures stable operation under high pressure and complex working conditions.

Application

  • Heating system: Hot water circulation for heating and heating supply.

  • Central air conditioning and chiller units: Cooling and refrigeration circulating water systems.

  • Industrial and civil cooling: Industrial circulating cooling water systems.

  • Bathing and heating: Circulating water systems for hot water bathing and heating.

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