Definition of self-cleaning filter

A self-cleaning filter, as its name suggests, is a filter that has a self-cleaning function. The original purpose of the filter is to remove particles and sediments from the liquid in order to purify the liquid. Traditional filters require frequent manual cleaning, while self-cleaning filters effectively achieve self-cleaning through a built-in cleaning mechanism. They can work continuously online, automatically clean and discharge dirt.

The self-cleaning filter embodies the design concept of automation and intelligence. By setting up a backwash cleaning device, it can form a strong backwash flow on the surface of the filter element, quickly clean the impurities on the surface of the filter element, and discharge the filter through the sewage channel. This design properly solves the problem of clogging of the filter during long-term operation and greatly improves the filtration efficiency.

Self-cleaning filters have significantly better characteristics than traditional filters. First, it has strong self-cleaning ability, which greatly reduces the workload of manual cleaning and reduces the difficulty of operation, making the filter performance more stable and its service life longer. Second, the entire process is automated and can work continuously online, saving human resources, not only improving work efficiency, but also reducing management costs. Third, it is environmentally friendly. All cleaning processes are carried out inside the closed filter. There is no secondary pollution problem and the quality of the discharged water is ensured.

Self-cleaning filters are widely used, and their appearance in various liquid filtration processes can be seen. Whether in industrial manufacturing, such as steel, chemicals, pharmaceuticals, electricity, etc., or in daily life, such as food and beverage industries, or even in fields such as soil irrigation and sewage treatment, self-cleaning filters can play an important role. Relying on its high-efficiency filtration and self-cleaning performance, self-cleaning filters can greatly improve the quality and efficiency of liquid purification and ensure the cleanliness and safety of liquids.

In summary, the self-cleaning filter is an advanced filtration equipment with precise structure and powerful functions. With its self-cleaning and automated characteristics, it has huge advantages and broad application prospects. Its emergence and development have brought convenience and security to our production and life, and also promoted the advancement of filtration technology.

Development History and Product Advantages

The emergence and development of self-cleaning filters represents the progress and development of filtration technology. From the earliest manual filters to today's self-cleaning filters, this process is full of technical challenges and innovations.

Before the 1970s, filters were mainly operated and cleaned manually. The work efficiency was low, the cleaning process was cumbersome, and the filtration work needed to be paused during the cleaning process, making it impossible to work continuously. With the development of science and technology and the improvement of industrial needs, people begin to seek new filtration solutions. In the late 1970s, self-cleaning filtration technology began to emerge. This is a new type of filtration technology. Compared with traditional filters, the main advantage is that it can use water pressure to operate and clean itself, and it does not stop filtering during cleaning. .

The emergence of self-cleaning filters marks that filtration technology has entered a new stage. This new type of filter embeds "cleaning" into the filtration process of liquids, which not only improves the filtration effect, but also reduces the workload of operators. Self-cleaning filters are widely used in many fields such as industrial manufacturing, agriculture, municipal administration, and seawater desalination.

However, the initial self-cleaning filters still have many shortcomings and challenges. For example, the filtration effect is limited, the degree of automation is insufficient, and the cleaning intensity is difficult to control. Engineers have made a series of improvements and optimizations to address these issues. For example, optimizing the filter material, increasing the filter area, and introducing mechanical pressing make the self-cleaning filter have better cleaning effect and stronger self-cleaning ability.

More importantly, in the development of self-cleaning filters, intelligent design is increasingly integrated into them. Today's self-cleaning filters can automatically adjust filtration and cleaning parameters based on filtration conditions and liquid properties to achieve better performance and longer service life.

From manual filters to the current self-cleaning filters, every step of progress is inseparable from the promotion of technology and is closely linked to the needs of the times. Today, self-cleaning filters have become an indispensable filtration tool in all walks of life, and its development continues. With the continuous advancement of technology, self-cleaning filters in the future will be more intelligent and efficient, bringing more convenience to human life and production.

How the self-cleaning filter works at each stage

The automatic self-cleaning filter consists of five parts: high-strength stainless steel screen and cleaning brush or scraper, reduction motor drive, control electrical appliance and filter main body. The liquid flow direction is set in the opposite direction to the rotation direction of the cleaning brush, and its physical impact force is used for cleaning to enhance the filter cleaning effect.

Filtration stage: First, the unfiltered fluid enters the inside of the filter. After the fluid enters the filter housing, it needs to be filtered through the filter element. The interior of the filter element is filled with a high-strength stainless steel screen. Solid impurities larger than the mesh size are intercepted by the filter. Liquids and very small solid particles smaller than the mesh size pass through the filter and flow out of the target equipment along the designated path.

Self-cleaning stage: As the filtration time increases, solid impurities on the filter gradually accumulate, thus reducing the working efficiency of the filter. At this time, the differential pressure monitoring point inside the filter will record the inflow and outflow pressure values. When the differential pressure value exceeds the preset value, the cleaning process starts automatically. The cleaning device inside the filter starts to rotate and clean the filter screen at an appropriate speed. The cleaning brush is driven by a reduction motor and uses special bristles to be fixed on the brush rod. It rotates relative to the contact surface of the filter screen, which can effectively remove impurities from the filter screen.

Drainage stage: The waste liquid or waste generated during the cleaning of the filter screen by a cleaning brush or blower is discharged from the filter by opening the drain valve.

At the same time, in order to ensure continuous operation of the equipment, the filter element can be divided into several parts. When one part is self-cleaning, the remaining parts can still perform filtering work, ensuring the continuous working status of the filter and the safe operation of the equipment, and also improving the filtration efficiency.

Application of self-cleaning filters in different industries and regions

 In the chemical industry, self-cleaning filters are widely used to filter various fluid media in the production process, including raw material liquids, solvents, catalysts, water, etc. Through effective filtration, the wear and tear of mechanical equipment can be reduced, product quality can be prevented from declining, and production can be guaranteed to continue. At the same time, the self-cleaning design of the filter can reduce downtime caused by cleaning the filter during the production process and significantly improve production efficiency.

In the field of electric power, thermal power plants, hydroelectric power plants, etc. need to use a large amount of water as a coolant or power source, and the source water may contain impurity particles of different sizes. The self-cleaning filter can effectively filter these particles and prevent them from entering the equipment and causing damage to the equipment.

In the field of agricultural irrigation, self-cleaning filters are used in irrigation systems to filter out impurity particles in the water source and ensure irrigation water quality. Especially in drip and sprinkler irrigation systems, impurity particles may clog water pipes and nozzles, reducing irrigation efficiency. The application of self-cleaning filters can combat this problem and significantly reduce irrigation downtime due to filter cleaning.

Let’s take a look at the application of self-cleaning filters in different regions such as Europe, America, and Asia.

In Europe and North America, self-cleaning filters are widely used in various industrial productions. For example, in the petrochemical industry, filters are used to filter petroleum, chemical fluids, surface water in refineries, and water injected into various oil wells. In the food manufacturing industry, filters are used to filter out residues and impurities during the production process to maintain food quality. In the power industry, filters are used to filter cooling water and oil to prevent particulate impurities from causing damage to equipment.

In Asia, as industrialization and urbanization accelerate, the demand for filters in various industries continues to grow. Self-cleaning filters occupy an important position in this growing and changing market. Another example is that in China, with the implementation of environmental protection policies, the demand for water treatment equipment has increased significantly, and the demand for filters has also increased. In the agricultural field, faced with the threat of water shortage, the application of self-cleaning filters in irrigation systems will contribute to the rational utilization of water resources.

In general, we can see the use of self-cleaning filters whether in industrial production or in daily life. Through fine filtration, they ensure the normal progress of production and life, and at the same time contribute to our environmental protection.

Classification of self-cleaning filters

1. Fully automatic cleaning filter: This type of filter is controlled by a microcomputer and can start automatic backwashing and clean the filter screen when the set time or pressure difference reaches the set value, avoiding the complicated steps of manual cleaning and saving money. time and labor. The fully automatic cleaning filter can automatically switch working states during the filtration process. Even during the cleaning process, it will not affect the supply of normal water flow. This type of filter is widely used in water treatment, cooling circulating water, heat exchange systems and other fields.

2. Multi-column automatic backwash filter: The characteristic of this type of filter is that it is composed of multiple filter columns to achieve the effect of parallel filtration. Each filter column can be backwashed independently, so that in a certain filter column During cleaning, other filter columns can still perform normal filtration work, and the washing system does not affect the overall filtration. This ensures the continuous operation of the filtration system and avoids the problem of the filtration system pausing due to cleaning of the filter element. This type of self-cleaning filter is widely used in electric power, petroleum, chemical industry, building materials and other industries due to its high filtration accuracy, large processing flow rate, water saving and other advantages.

3. Modular automatic self-cleaning filtration system: This filtration system consists of multiple self-cleaning filtration modules. The modules can work independently or jointly. This design achieves system flexibility and can adjust the number and working status of modules according to changes in treated water flow or filtration accuracy requirements. This further meets the demand for large flow rates or high filtration accuracy. This kind of system is usually suitable for application scenarios that need to process large water flows or require high filtration precision, such as clean water supply, cooling return water treatment, sewage recycling and other fields.

How to adjust the number and working status of modules in the modular automatic self-cleaning filtration system?

The modular automatic self-cleaning filtration system is composed of multiple filtration modules. This design enables system flexibility and allows the number and working status of modules to be adjusted according to specific needs.

Adjusting the number of modules is primarily accomplished by adding or removing filter modules. For example, if your fluid handling needs increase, you can add more modules to increase filtration capacity. Or conversely, if fluid handling needs decrease, you can remove some modules to save operating costs. The addition and removal of modules usually needs to be completed by professional technicians to ensure the normal operation of the system.

Adjusting the working status of the module is more complicated, involving adjusting the cleaning frequency of the filter, the pressure difference setting value, etc. These adjustments can usually be made through a control panel or computer software. Specific operating instructions are usually provided in the product's user manual, which also requires reference to specific operating conditions and fluid handling needs.

In general, adjusting the number of modules and working status of the modular automatic self-cleaning filtration system needs to be combined with specific filtration needs and working conditions. At the same time, it often needs to be operated by experienced technicians to ensure the normal operation of the filtration system. If you encounter problems during operation, it is recommended to contact the original manufacturer in time for professional technical support.

Multi-column automatic backwash filters are widely used in many industries due to their efficient filtration effect and automated cleaning process, including:

Drinking water treatment: The multi-column automatic backwash filter can effectively remove suspended solids and impurities in the water and provide healthy drinking water for the people.

Building circulating water treatment: In the construction field, circulating water systems have extremely high requirements for filters, and multi-column automatic backwash filters have undoubtedly become the best choice. It can not only effectively filter out impurities in the water to ensure clean water quality, but also can automatically backwash regularly, greatly reducing maintenance costs.

Industrial circulating water treatment: In the industrial production process, the circulating water system needs to process a large amount of industrial wastewater. The application of multi-column automatic backwash filters can ensure the degree of water purification, protect the environment, and at the same time greatly improve the utilization of water resources. ,reduce manufacturing cost.

Sewage treatment: The multi-column automatic backwash filter is an indispensable part of the sewage treatment industry. It can not only effectively filter impurities in the water, but also effectively prevent filter clogging and enhance the filtration effect through the automatic backwash function.

Mining Water Treatment: In the mining industry, large amounts of water are required for cooling and cleaning. The multi-column automatic backwash filter can effectively filter out a large amount of soil and impurities produced during the mining process to ensure water quality.

Golf course water treatment: The maintenance of golf courses requires a large amount of clean water. Multi-column automatic backwash filters can meet this demand and ensure the arched greening of the course.

Steel, petroleum, chemicals, electronics, power generation, textiles, papermaking, food, sugar, pharmaceuticals, plastics, automobiles and other industries: In these industries, multi-column automatic backwash filters are used to filter impurities in the circulating water system or in production Precise filtration is required during the process to ensure the normal progress of the production process.

The application of multi-column automatic backwash filters has brought convenience to production in all walks of life, while also ensuring work efficiency and product quality. It has undoubtedly become the preferred product in the filtration field.

In short, multi-column automatic backwash filters can play an important role in almost all industries that require water treatment. In view of its automatic cleaning function, it not only reduces the labor and material consumption of cleaning and maintenance work, but also ensures the filtration effect and reduces the operation and maintenance costs of the system. Whether in terms of resource saving or work efficiency improvement, the multi-column automatic backwash filter shows unrivaled advantages.

The fully automatic cleaning filter is an advanced filtration equipment. It intercepts impurities, suspended matter, tiny particles, etc. in the water flow through the undulating filter screen, ensuring the purity of the water quality. However, during the filtration process, if the filter screen is not cleaned regularly, impurities will accumulate on the filter screen, affecting the path of the water flow, and thus affecting the supply of water flow. The fully automatic cleaning filter solves this problem through the automatic cleaning function. So, how does it do it?

Fully automatic filter cleaning equipment includes filters, controllers and backwash devices. When water flows through the filter, impurities are intercepted by the filter. In order to prevent the filter screen gap from being blocked by impurities and affecting the water flow, the fully automatic cleaning filter regularly starts the backwash device through the cleaning cycle set by the controller to clean the impurities on the filter screen.

However, it is important to note that some filters may briefly interrupt the flow of water during the backwash process. In order to solve this problem, the fully automatic filter adopts a special design. In some fully automatic cleaning filters, the cleaning function is achieved through a brush or other cleaning device. These devices only clean part of the filter during cleaning, while other parts can still be filtered, so it will not affect the normal flow of water. supply.

Another design for fully automatic cleaning filters is to divide the filter into two or more parts, so that while one part of the filter is being cleaned, the other part of the filter can continue to filter the water flow, avoiding interruption of the water flow.

The more cleverly designed fully automatic cleaning filter can maintain normal water supply while cleaning the filter. In these devices, the outlet and cleaning sections of the filter are separated. During cleaning, the impurities in the filter are washed by the reverse flow to the special sewage outlet, and then discharged from the equipment, while the normal water outlet still maintains normal water supply to avoid affecting users.

The design concept of the fully automatic cleaning filter is to meet the filtration needs while reducing the impact on the water supply. Whether it is through an automatic cleaning device that cleans the filter in time before it is clogged, or through an exquisitely designed independent cleaning and sewage system without interrupting the work of the equipment, fully automatic cleaning filters have gained popularity in the industrial and domestic water fields. Wide range of applications. In general, the fully automatic cleaning filter uses its own automatic cleaning function to effectively avoid the impact of filter clogging on the water supply during the filtration process, ensuring water quality and stable supply of water flow.