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Influence of resistance characteristics of ultra-low resistance filter on its service life
Influence of resistance characteristics of ultra-low resistance filter on its service lifeIn the field of filtration technology, ultra-low resistance filtration devices have attracted much attention for their high-efficiency filtration performance. Among them, the resistance characteristic is a key factor, which has a profound impact on the service life of the filter device.First, the basic concept of resistance characteristics The resistance characteristic refers to the obstructing force of the fluid (gas or liquid) as it passes through the filter device. This resistance is mainly due to the interception and adsorption of particles in the fluid by the filter medium, as well as the friction of the fluid itself in the filter channel. For ultra-low resistance filtration devices, the design purpose is to reduce this resistance as much as possible while ensuring effective filtration. Second, the positive impact of low resistance on the service life of the filter device (1) Reduce component wear Fan and pump pressure relief When the resistance of the filter unit is low, the pressure on the connected fan (for gas filtration) or pump (for liquid filtration) is reduced. In a ventilation system, if the resistance of the filter device is too large, the fan needs to output a higher pressure to push the air through, which causes the motor and impeller of the fan to bear a greater load. In a state of high load for a long time, the motor of the fan is prone to overheating, insulation aging, and other problems, and the impeller will wear and even deform because of greater pressure. The low-resistance filter device can make the fan work in a more relaxed state, and reduce the wear of the motor and impeller, thereby extending the service life of the fan, and indirectly extending the service life of the entire filter system. Protection of the internal structure of the filter device The filter medium, support structure, and other components inside the ultra-low resistance filter device will also benefit from the low resistance. In the case of high resistance, the impact force of fluid on the filter medium is large, which makes it easy to damage the fiber structure of the filter medium. For example, if the fiber filter paper in air filtration is subjected to the impact of a high flow rate and high resistance for a long time, the fiber of the filter paper may break, resulting in a decrease in filtration accuracy. The low resistance allows the fluid to pass through the filter medium in a relatively gentle manner, reducing the damage to its structure. At the same time, the low resistance can also reduce the burden of the support structure and prevent it from deformation or damage due to long-term excessive stress, thus extending the service life of the internal components of the filter device. (2) Reduce energy consumption and extend equipment life The relationship between energy consumption and equipment operating time Because of the low resistance, the power required by the fan or pump during operation will be reduced. In industrial production, filtration systems often need to run for a long time, and energy consumption is an important cost factor. When the resistance of the filter device is low, the fan or pump can operate at a lower power, which not only saves energy but also reduces the loss of the equipment due to long-term high-power operation. For example, in a large sewage treatment plant, the resistance characteristics of the liquid filtration unit directly affect the energy consumption of the pump. If the resistance of the filter device is too large, the pump needs to consume more electricity to maintain the filtration flow of the liquid. The low-resistance filter device can reduce the energy consumption of the pump and reduce the heating of the motor, thus extending the service life of the pump. Protection of power supply and control system Lower energy consumption also means less pressure on the power supply and control system for the entire filtration system. In the case of high energy consumption, the power supply equipment may fail due to overload, and the electrical components in the control system may also be damaged due to long-term high load. The ultra-low resistance filter reduces energy consumption by reducing resistance, protects the power supply and control system, avoids unplanned shutdown or damage of the filter device due to power system failure, and helps to extend the service life of the entire filter system. Third, the negative impact of high resistance on the service life of the filter device (1) Accelerate the blocking of filter media Particle deposition and clogging mechanism When the resistance of the filter device is high, the speed of the fluid passing through the filter medium will be slowed down, which makes it easier for the particles in the fluid to deposit on the surface of the filter medium. In air filtration, dust, and impurities are more likely to accumulate on the filter medium with high resistance, forming a clogging layer. Taking the air filter in the air conditioning system as an example, when the filter resistance increases, the speed of air passing through becomes slower, and dust will gather faster on the filter surface. With the aggravation of blockage, the filtration efficiency of the filter device will decrease, and to maintain a certain filtration flow rate, the fan needs to increase the power, which will further increase the resistance of the filter device, forming a vicious circle. The need for frequent replacement of filter media Rapid clogging of the filter media due to high resistance makes the filter media need to be replaced more frequently. The frequent replacement of filter media not only increases the cost of use, but also each replacement process may have a certain impact on other components of the filter device. For example, during the replacement process, the seal may be accidentally damaged, or the internal support structure may collide, affecting its stability. Moreover, frequent replacement of the filter media will also increase the downtime of the equipment, affecting the entire production or workflow. For some industrial filtration systems that require continuous operation, frequent downtime to replace the filter media may lead to reduced production efficiency but also shorten the effective use time of the filter device. (2) Risk of system failure Pressure overload and component damage High resistance may cause pressure overload throughout the filtration system. In extreme cases, excessive pressure may rupture the casing of the filter device, or make the pipe connection loose and leak. For some liquid filtration systems used in high-pressure environments, such as high-pressure filtration units in chemical production, pressure overload caused by high resistance may lead to serious safety accidents. At the same time, other components in the system, such as valves, sensors, etc., may also be damaged due to excessive pressure. The damage to these parts not only requires a lot of time and money to repair but also affects the normal operation of the filter device and shortens its service life. Microbial growth and chemical corrosion intensification In a liquid filtration system with high resistance, the fluid flows slowly and it is easy to breed microorganisms. For example, in the filtration system of the food and beverage industry, if the liquid stays in the filtration device for too long, microorganisms will multiply in the filtration medium and the inner wall of the pipeline, which will not only affect the filtration effect but also corrode the components of the filtration device. For some liquid filtration-containing chemicals, high resistance may lead to prolonged contact time between the chemicals and the components of the filtration device, thus exacerbating chemical corrosion. Chemical corrosion will weaken the strength of the component, making it more prone to leakage, rupture, and other problems, greatly shortening the service life of the filter device. In summary, the resistance characteristics of ultra-low resistance filtration devices have a crucial impact on their service life. Low resistance can reduce component wear and energy consumption, thereby extending the service life of the device; The high resistance will accelerate the blockage of the filter medium, cause the risk of system failure, and shorten the service life of the device. Therefore, when selecting and using ultra-low resistance filtration devices, it is necessary to fully consider their resistance characteristics. |
