Backwash Filter - Intelligent Debris Cleaning & Long - term Filtration Guardian

Product Introduction

1. Core Structure

• Filtration Unit：Composed of high - precision filter screens or filter elements, which can intercept impurities of different particle sizes. The screen is usually made of stainless steel, with excellent corrosion resistance and strength.

• Backwash System：Includes backwash valves, 排污口 (drain outlets), control systems, etc. The backwash process is controlled by an automated program to clean the filter screens or filter elements.

• Shell：Made of anti - corrosive carbon steel or stainless steel, it can withstand high working pressures, ensuring the stable operation of the equipment under complex working conditions.

• Inlet and Outlet Devices：Equipped with standard flange interfaces, it is convenient to connect with the pipeline system, ensuring smooth fluid flow in and out.

2. Working Principle：Utilizes the interception function of the filter screen or filter element to filter impurities in the fluid. When the impurities accumulate on the filtration unit to a certain extent, causing the pressure difference between the inlet and outlet to reach the set value or the operation time to reach the preset duration, the backwash system is activated. The filter screen or filter element is flushed by reverse water flow, and the impurities are discharged to restore the filtration performance.

3. Unique Advantages：Compared with traditional filters, the backwash filter does not require manual disassembly and cleaning, and can achieve automatic backwashing, greatly reducing the maintenance workload. It has strong continuous operation ability, can supply water without interruption during the backwashing process, and ensures production continuity. It also features high filtration efficiency and effectively reduces operating costs.

Working Process

1. Filtration Stage

• The fluid to be filtered enters the backwash filter through the inlet pipe and evenly flows towards the filtration unit.

• When the fluid passes through the filter screen or filter element, suspended solids, particulate impurities, etc., are intercepted, and the clean fluid flows out from the outlet and enters the subsequent treatment or use process.

2. Backwash Trigger

• During the operation of the filter, the control system monitors the pressure difference between the inlet and outlet and the operation time in real - time.

• When the pressure difference exceeds the set threshold (such as 0.05 - 0.1MPa), or the operation time reaches the preset duration (such as 8 - 24 hours), the backwash program is triggered.

3. Backwash Process

• The backwash valve switches to the backwash mode, closes the outlet, and opens the drain outlet.

• Part of the clean fluid flows back from the outlet end of the filter and flushes the filter screen or filter element with high - speed water flow, discharging the intercepted impurities from the drain outlet.

• The backwashing lasts for several seconds to minutes (according to the set parameters) to ensure the cleanliness of the filter screen or filter element.

4. Restoration of Filtration：After the backwashing is completed, the backwash valve returns to the normal filtration mode, closes the drain outlet, and opens the outlet, and the filter re - enters the filtration stage.

Product Features

Technical Parameters

Application Fields

1. Industrial Circulating Water Systems：Filters impurities such as sediment, algae, and rust in circulating water, prevents pipeline blockage and equipment corrosion, and improves the utilization rate of circulating water.

2. Sewage Treatment

• Removes large - particle suspended solids in the pretreatment stage, reducing the load of subsequent treatment processes.

• Further filters in the reclaimed water reuse process to improve water quality and meet reuse standards.

3. Petrochemical Industry：Filters various fluids in the production process, protects key equipment such as compressors and pumps, and ensures the stable production process.

4. Food and Beverage Industry：Filters production water and raw material liquids to ensure product quality and food safety.

5. Agricultural Irrigation：Filters irrigation water, prevents blockage of drip irrigation and sprinkler irrigation equipment, improves irrigation efficiency, and protects crops.

6. Power Industry：Used for the filtration of circulating water and condensate water in power plants, protects equipment such as steam turbines and condensers, and reduces maintenance costs.

FAQ

1. What should I do if the backwash frequency of the backwash filter is too high?：A too - high backwash frequency may be due to excessive impurity content in the inlet water. Pre - treatment at the front end can be strengthened. It may also be caused by unreasonable backwash parameter settings. The set value of the pressure difference can be appropriately increased, or the set value of the operation time can be extended. If the filter screen is damaged, resulting in a decrease in interception efficiency, the filter screen should be replaced in a timely manner.

2. How to choose the appropriate filtration precision of the backwash filter?：The selection should be based on the requirements of subsequent equipment for fluid cleanliness and the effect of front - end pre - treatment. For example, to protect precision equipment, a filter with a higher filtration precision (5 - 50 microns) should be selected. If it is only used for general impurity interception, a filter with a precision of 50 - 500 microns can be chosen. At the same time, consider the particle size distribution of impurities in the fluid to ensure that the filter can effectively intercept the main impurities.

Conclusion

With its remarkable advantages such as intelligent backwashing, high - efficiency filtration, and strong adaptability, the backwash filter has become a key device for many industries to ensure fluid cleanliness and stable equipment operation. Whether in industrial production, sewage treatment, agricultural irrigation, or power supply, it can provide reliable solutions. Choosing our backwash filter means choosing an efficient, intelligent, and worry - free filtration solution, escorting the smooth operation of production and daily life.

If you are interested in this product or have any questions, please feel free to contact us at any time.

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