Vertical self-cleaning filters

What is a self-cleaning water filter

The automatic self-cleaning water filter is a mesh type, electric drive filter, which can be automatically cleaned according to the pressure difference or time through program control. The whole equipment adopts mechanical automation design, which has the characteristics of filtration precision, high efficiency, and thorough cleaning. It is suitable for filtration environments such as high flow rate, large flux, and low viscosity liquids.
The self-cleaning filter is mainly used to block the solid impurities in the water to achieve the purpose of purifying the water source and provide guarantee for the normal operation of the back-end pipelines and equipment. Compared with ordinary mesh filters, it has better filtering effect and more intelligent control. The control system can support automatic operation and reduce labor costs. And the cleaning equipment is more timely, the cleaning time is fast, and the uninterrupted water supply can basically be realized.
The material of self-cleaning water filter is divided into carbon steel and stainless steel, you can choose according to your needs.

Product classification

Self-cleaning water filters can be divided into brush-type self-cleaning filters and scraper-type self-cleaning filters according to the different ways of cleaning the screen inside. Both types of equipment use PLC to control the cleaning start and stop of the equipment according to time, differential pressure or manual operation. But these two filters have different ways of cleaning the filter.

The structure of the filter

The automatic self-cleaning water filter is a widely used equipment in the water treatment industry. Its simple design and good performance enable the sewage to achieve the best filtering effect. The main components are: motor, electric control box, control pipeline, main pipe assembly, filter element assembly, 316L stainless steel brush, frame assembly, drive shaft, inlet and outlet connection flanges, etc.
The self-cleaning filter overcomes many shortcomings of traditional filtration products, such as small dirt holding capacity, easy to be blocked by dirt, the filter part needs to be disassembled for cleaning, and the filter status cannot be monitored. It has the function of filtering raw water and automatically cleaning and discharging the filter element. In addition, the system provides uninterrupted water supply when cleaning and discharging sewage, which can monitor the working state of the filter and has a high degree of automation. It covers the needs of various filtration precisions from 10um to 3000um.

The structure of self cleaning water filter

How self-cleaning water filter works

The main body of the automatic self-cleaning filter is composed of the main pipeline, wedge filter screen, motor, steel brush, industrial control cabinet and other parts. The whole process is divided into two steps: filtration and cleaning. When the source water passes through the main pipeline, the solid impurities will be intercepted by the filter screen placed inside to achieve the purpose of cleaning the liquid, that is, the filtration process.
When the solid impurities in the liquid are continuously deposited on the filter screen, the space for liquid circulation is reduced, resulting in a pressure difference between the front and rear ends of the filter screen. When the data measured by the pressure monitoring equipment on the equipment reaches the set value, the control system will turn on the motor to rotate, thereby driving the steel brush to clean the filter screen. At this time, the sewage outlet will also be automatically opened, so that the cleaned impurity solids flow out from the sewage outlet, so as to achieve the purpose of cleaning the equipment and make the filter have the ability to filter again. The entire cleaning process is very fast, only takes ten seconds, and basically does not affect the back-end water supply. It is also possible to set the time to allow the equipment to be cleaned during the low-peak period of water use.
 

Technical parameters of self-cleaning water filter

Self-cleaning water filter features

The main difference between the automatic mesh self-cleaning water filter and other filters is that it is equipped with a motor and a steel brush to automatically clean the filter screen. At the same time, it is equipped with a control system to allow the motor to start at the appropriate time, driving the brush to clean the filter. The drive shaft of the motor reducer has a positioning device, and the positioning sensor in the positioning device corresponds to each filter element. When the positioning sensor senses the corresponding positioning point, it will send a signal to stop the motor rotation, and start the backwashing process at the same time, open the backwashing valve for a few seconds, and flush the solid impurities out of the equipment.
1. The filtration precision is optional, which is suitable for various filtration requirements;
2. Equipment materials are optional, and special materials such as chemical corrosion-resistant S316L can be selected;
3. The cleaning method is fast and can achieve 24-hour uninterrupted water supply;
4. Automatic control, online monitoring can reduce labor costs;
5. There is a self-inspection program to protect the operation of the equipment and the timely water supply;
6. Flange connection, easy installation and disassembly;
7. Fully enclosed filtration, no leakage, high pressure resistance.

Application of self-cleaning water filter

The self-cleaning water filter is a filter with a wide range of uses. The stainless steel brush is driven by the motor to clean the stainless steel filter element.
Brush type self-cleaning filters are widely used in circulating or non-circulating cooling water systems, heat exchange systems, central air conditioning systems, central heating systems, hot water boiler systems, etc., to protect cooling equipment, heat exchange devices, air conditioners, boilers, etc. Wait.

What do you need to pay attention to when buying a self-cleaning water filter

1. Treated water volume
2. System piping pressure
3. The filtration accuracy of the actual site requirements
4. The suspended solids content of the filtration system
5. The media and chemical properties of the filtration system

What to pay attention to when using self-cleaning filters

1. Determine the location. The self-cleaning filter needs to be in a stable place to play its role normally, so put the self-cleaning filter in a reasonable location, and pay attention to the location to be rain-proof, waterproof and moisture-proof.
2. Check the installation of the equipment: Before the self-cleaning filter is officially put into operation, a comprehensive inspection of the filter should be carried out, such as whether the joints are tight and whether the electric control box is dry.
3. Trial operation: turn on the power supply, observe whether all parts are in normal working condition, and ensure that the self-cleaning filter can operate normally.
4. Formal operation: After the test run has no problems found, it can be put into use.

Debugging of self-cleaning filters

Self-cleaning filters are generally debugged by manufacturers according to standard data, and most of them do not need to be debugged when used, but because some actual needs are different from the standards, they need to be debugged. The specific debugging method is as follows:
1. Turn on the power: the indicator light must be lit first for debugging the self-cleaning filter.
2. Adjust the rotation direction: The self-cleaning filter can change the rotation direction according to the actual needs, but it should be noted that the rotation of the motor and the logo should be in the same direction.
3. Set the pressure difference: The self-cleaning filter can also reset the corresponding pressure difference according to the site requirements, so as to facilitate and quickly realize the sewage cleaning work.
4. Debugging control system: The self-cleaning filter is divided into intelligent control and manual control. If manual forced sewage discharge and cleaning are required, it can be adjusted to manual control operation.
 

Some points that might help

1. What is the difference between a self-cleaning filter and a traditional filter?
Compared with traditional filtration equipment, self-cleaning filter is a kind of filtration equipment with a higher degree of automation. The self-cleaning filter is a separation and filtering device that automatically filters and removes the particles in the liquid under certain conditions. Compared with the traditional filter, the self-cleaning filter has the following characteristics: high degree of automation; small pressure loss; no need to manually remove the filter residue. Self-cleaning filters provide uninterrupted water supply during cleaning.

2. We are in the paper industry, and the filtering liquid is relatively corrosive. What kind of material filter should be used?
Our filters have many applications in the paper industry. We have successfully applied paper pulp, white water and clean water filtration. The corrosiveness of the filtration liquid in paper mills is generally relatively high. We recommend choosing all stainless steel 304 materials. If required, 316L stainless steel can be selected.

3. What water quality is the automatic self-cleaning filter suitable for?
General circulating water, continuous casting water, agricultural irrigation water, and air-conditioning water can all use self-cleaning filters, but when choosing, pay attention to the size of the flow, the concentration of suspended solids, and the water inlet pressure. It is said that the concentration of suspended solids is relatively high, and pretreatment must be added in front. The water inlet pressure cannot be lower than 2 kg.

4. Can the water filtered by the self-cleaning filter be directly consumed?
No, the water directly filtered by the self-cleaning filter cannot meet the drinking standard. Self-cleaning filters should be used as pre-filtration devices for ultrafiltration and pure water filtration equipment. Optional pure water manufacturing equipment required for direct drinking.

Precautions for installation and use of large-diameter self-cleaning filters

1. The equipment should be installed by bypass, so that the equipment can be inspected and maintained without stopping.
2. The equipment can be installed horizontally or vertically according to the site conditions. The equipment must be connected to the pipeline in the direction of the water inlet and outlet. When installed vertically, the water inlet of the equipment should be upward, and when installed horizontally, the sewage outlet should be downward.
3. Valves should be installed at the water inlet, water outlet and sewage outlet of the equipment (the sewage valve should be a quick valve).
4. The clear distance between the equipment is not less than 1500mm; the clear distance between the equipment and the wall is not less than 1000mm; the maintenance space of not less than 500mm should be left between the equipment and its surroundings.
5. On the inlet and outlet pipelines of the equipment, pipeline brackets should be installed near the nozzle; brackets should be installed under the valve that is directly connected to the nozzle of the container and is greater than or equal to DN150.

Self cleaning filter installation diagram