Security Filter - Precision Protection & Equipment Safety Sentinel

Product Introduction

1. Structural Composition

• Shell: Made of stainless steel or high - strength engineering plastics, it has excellent pressure resistance and corrosion

• resistance, adapting to various working environments and pressure conditions.

• Filter Element: Commonly used filter elements include polypropylene melt - blown filter elements and pleated filter elements. With a wide range of filtration precision, they can be customized according to requirements and are the core components for achieving precise filtration.

• End Caps and Seals: The end caps are fixed to the shell by welding or threaded connections, and are equipped with high - performance rubber seals to ensure the tightness of the filter and prevent fluid leakage.

• Inlet and Outlet Interfaces: Equipped with standard flange interfaces or quick - connect interfaces, it can be quickly connected to the pipeline system, suitable for various installation scenarios.

2. Filtration Principle: Utilizing the interception function of the filter element, when the fluid (liquid or gas) enters the security filter, it passes through the filter element under pressure. Suspended solids, colloids, particulate impurities, etc., are intercepted by the filter element, thus purifying the fluid and protecting downstream precision equipment.

3. Core Function: As the last barrier of the filtration system, the security filter can effectively intercept tiny impurities missed by the previous filtration processes, preventing them from entering precision equipment such as reverse osmosis membranes and ultrafiltration membranes, avoiding equipment blockage and wear, extending equipment service life, and ensuring the stable operation of the system.

Working Process

1. Fluid Inlet: The fluid to be filtered (such as pretreated raw water, process fluid, etc.) enters the interior of the security filter through pipeline connections from the inlet.

2. Precision Filtration: The fluid uniformly passes through the filter element under pressure. The filter element intercepts impurities of different particle sizes in the fluid according to its pore size. For example, for a filter element with a precision of 5 microns, particles and colloids larger than 5 microns will be trapped on the surface or internal pores of the filter element, while the clean fluid that meets the requirements passes through the filter element smoothly.

3. Purified Fluid Outlet: The clean fluid filtered by the filter element flows out from the outlet of the security filter and enters subsequent processing procedures or is directly used in the production process.

4. Filter Element Replacement: As the filtration process continues, the impurities intercepted by the filter element gradually increase, and the filtration resistance rises. When the pressure difference between the inlet and outlet of the filter reaches the set value (generally 0.1 - 0.15MPa), or when the preset service time is reached (usually 1 - 3 months, depending on actual working conditions), the filter element needs to be replaced in a timely manner to ensure the filtration effect and the normal operation of the system.

Product Features

Technical Parameters

Application Fields

1. Pretreatment for Reverse Osmosis Systems: Installed in front of reverse osmosis water treatment equipment, the security filter intercepts residual particulate impurities in the raw water, protects the reverse osmosis membrane, and improves the membrane's service life and water production quality.

2. Protection for Ultrafiltration Systems: As a pre - filtration device for ultrafiltration equipment, it prevents large - particle substances from entering the ultrafiltration membrane, avoiding membrane element blockage and damage, and ensuring the stable operation of the ultrafiltration system.

3. Electronics Industry: It provides filtration for high - purity process water used in electronic chip manufacturing, semiconductor production, etc., removing tiny particles in the water to meet the strict water quality requirements of production.

4. Pharmaceutical Industry: During the pharmaceutical production process, it filters water for injection and purified water to ensure that the water quality meets GMP standards and prevents impurities from contaminating drugs.

5. Food and Beverage Industry: It filters production water and raw materials, removes suspended solids, colloids, and other impurities, improves product quality, and ensures food safety.

6. Chemical Industry: It filters process fluids in chemical production, prevents impurities from affecting chemical reactions and product quality, and protects the normal operation of downstream equipment.

FAQ

1. How to choose the appropriate filtration precision of the security filter?：The selection of filtration precision needs to comprehensively consider the requirements of downstream equipment and the effect of previous pretreatment. If the downstream is a reverse osmosis membrane, a security filter with a precision of 5 microns is generally selected to prevent large - particle substances from scratching the membrane surface. In industries with extremely high water quality requirements, such as the electronics and pharmaceutical industries, a filter with a precision of 0.1 - 1 micron may be required to ensure that the fluid entering the production process is clean enough. At the same time, it is also necessary to refer to the actual impurity content and particle size distribution of the fluid after previous pretreatment.

2. What are the reasons for the excessive pressure difference between the inlet and outlet of the security filter?：The main reason for the excessive pressure difference is the blockage of the filter element. After long - term use, the filter element intercepts a large amount of impurities, resulting in increased resistance to fluid passage. In addition, sudden increases in impurity content in the fluid, improper filter element installation (such as poor sealing causing bypass), and unfully opened pipeline valves leading to poor water flow can also cause abnormal pressure differences. When the pressure difference is too large, it is necessary to promptly check the status of the filter element and the system pipeline. If necessary, replace the filter element or adjust the equipment operation status.

Conclusion

With its characteristics of precise filtration and reliable protection, the security filter has become an indispensable key equipment in many industrial production and water treatment systems. From ensuring the safety of precision membrane elements to meeting the high - standard production water requirements, it plays a vital role. Choosing our security filter means providing a solid guarantee for the stable operation of the system and product quality, helping various industries achieve efficient production.

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

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