All-plastic disc filter
Precise filtration: Different precision filter discs can be selected according to water requirements, with various specifications.
Efficient cleaning: High-speed, thorough backwashing, which can be completed in about 20 seconds.
Fully automatic operation, continuous water output: In the filter set, the backwashing process is carried out alternately, and the working and backwashing states are automatically switched to ensure continuous water output and low system pressure loss.
Standard: Standard modular system design, can be added or removed as needed, flexible and variable, and highly interchangeable.
Non-standard: Can flexibly utilize corner space, install in situ, and occupy very little floor space.
Reliable operation, simple maintenance, almost no daily maintenance is required, no special tools are needed, and few spare parts are needed.
Long service life: High-tech plastic filter core, strong, wear-free, corrosion-free, verified by years of industrial use, the filtration and backwashing effects will not deteriorate with the increase of use time.
　　Different types of filters in filtration equipment are suitable for different water quality requirements. As a deep filtration equipment, the disc filter is mainly composed of a tank shell, discs, inlet and outlet, and drain port. The material is usually high-quality engineering plastic with extremely high wear resistance. Supported by stainless steel springs, the structure is strong. One side of the disc is a continuous radial rib, and the other side is a set of concentric annular ribs; discs of the same specification are tightly assembled in the same way to form a cylinder with a huge filtration surface area. When the filter is working, the water flows from the inlet into the tank, flows from the outer ring of the disc through the rib gap to the inner ring, and the impurities in the water are trapped in the impurity retention area between the discs, and the purified water flows to the outlet through the inner ring of the disc.
   When using a disc filter, pressure gauges should be installed at the inlet and outlet respectively, so that the degree of blockage of the disc gap and the quality of the effluent can be judged by the pressure difference between the inlet and outlet. If the pressure difference between the inlet and outlet exceeds the specified value, backwashing should be carried out.

The steps for backwashing the disc filter are as follows:
(1) Open the drain valve;
(2) Close the outlet valve;
(3) Rotate the tank shell back and forth until the water discharged from the drain valve becomes clear.
(4) Open the outlet valve and close the drain valve.
The disc filter has the following characteristics:
(1) In a filter device of the same volume, the disc filter has a larger filtration surface area.
(2) Low water flow resistance, resulting in lower operating costs.
(3) Large debris retention space, which means low backwashing frequency.
(4) Backwashing only requires a gentle rotation of the tank body a few times, without disassembly, and can be completed in a few tens of seconds.

　　The degree of filtration of impurities in the water by the disc filter depends on the height of the circumferential ribs. Manufacturers usually use the color of the discs to distinguish their filtration accuracy. During planning and design, appropriate selection should be made based on water quality conditions and the requirements of the irrigation system.

Working Principle
The filter element of the disc filter, the disc is the impurity treatment carrier, which is composed of a set of plastic discs with grooves in different directions on both sides overlapping each other. The groove edges on adjacent surfaces form many intersections, which constitute a large number of cavities and irregular passages that continuously decrease from outside to inside. During filtration, these passages lead to water turbulence, ultimately causing the impurities in the water to be intercepted at various intersections. If the discs are stacked and installed on the filter core frame, under the action of the spring and the inlet water pressure, a loose outer and tight inner filtration unit is formed. The discs pressed together by the spring and water pressure in each filtration unit form countless filter screens that impurity particles cannot pass through. The disc width is 12-14 mm, the disc material is high-quality engineering plastic with extremely high wear resistance, supported by stainless steel springs for a robust structure. The backwashing water flow washes the various impurities adhering to the disc surface from the inside to the outside along the tangential direction of the inner wall of the disc. The disc rotates under the action of the backwashing water flow, ensuring that all impurities are effectively cleaned and discharged. The time interval and pressure difference can control all steps of backwashing. Once set, it can be used for a long time. The automatic backwashing filter completes the entire automatic backwashing process within seconds without interrupting operation. The filter using this filtration principle has a dynamically variable gap between discs during filtration and backwashing, which is very beneficial for improving filtration performance and water quality, and can greatly reduce the amount of backwashing water, typically about 0.25%. The different depths and number of grooves on the discs determine the filtration accuracy of the filtration unit.

Working Principle of the Filtration Stage
Water flows through the filter inlet into the filter. When passing through the filter disc, the filter discs are tightly pressed together under the action of spring force and water force. Impurity particles are retained at the intersections of the discs. The filtered water flows out from the main channel of the filter, at which time the one-way diaphragm valve is open.
Fully automatic operation, continuous water output
　　Time and pressure difference control backwashing startup. In the filter system, backwashing is performed sequentially between various filter units and workstations. Automatic switching between working and backwashing states ensures continuous water output, low system pressure loss, and the filtration and backwashing effects do not deteriorate with use time.

Modular Design
　　Users can add or remove filter units as needed, providing flexibility and strong interchangeability. It can flexibly utilize on-site corner space and is suitable for installation in various locations, saving space.

Easy Maintenance
　　Almost no daily maintenance is required, and no special tools are needed for inspection. Few parts need to be disassembled.

　　Like other filters, the disc filter consists of a filter shell and a filter element; the filter shell material is generally plastic, stainless steel, or plastic-coated carbon steel, and there are many shapes; the filter element is a hollow cylinder, which is composed of many annular plastic discs with micron-level equilateral triangular grooves on both sides assembled on a central skeleton. The discs compressed by springs and water pressure in each filtering unit form countless layers of filter screens that impurities cannot pass through, with a total thickness equivalent to 30 layers of ordinary filter screens.

　　The fully automatic disc filter is equipped with an electronic control device, which can control all steps of backwashing using time intervals and pressure difference. Once set, it can be used for a long time. The automatic backwashing filter completes the entire automatic backwashing process within seconds without interrupting operation. The backwash is automatically started by the set time or pressure difference signal, the backwash valve changes the water flow direction in the filter unit, the spring on the filter core is pushed open by the water pressure, and all the discs and the small gaps between the discs are loosened. The nozzle in the center of the filter core sprays water in the tangential direction, causing the discs to rotate. Under the scouring of the water flow and the centrifugal force of the high-speed rotation of the discs, the objects trapped on the discs are washed away, so a very good cleaning effect can be achieved with a very small amount of backwash water. Then, the backwash valve returns to the filtering position, and the spring on the filter core compresses the discs again, returning to the filtering state. The backwash water is all system-filtered water.
Precise Filtration
　　Different precision filter discs can be selected according to water requirements, with various specifications such as 20 microns, 55 microns, 100 microns, 130 microns, 200 microns, and 400 microns, and a filtration ratio of more than 85%. Thorough and efficient backwashing. Because the filter pores are completely opened during backwashing, coupled with the centrifugal jet action, a cleaning effect unattainable by other filters is achieved. Each filter unit backwashing process can be completed in just 10 to 20 seconds. Fully automatic operation, continuous water output Time and pressure difference control backwashing startup. In the filter system, backwashing is performed sequentially between various filter units and workstations. Automatic switching between working and backwashing states ensures continuous water output, low system pressure loss, and the filtration and backwashing effects do not deteriorate with use time. Modular Design Users can add or remove filter units as needed, providing flexibility and strong interchangeability. It can flexibly utilize on-site corner space and is suitable for installation in various locations, saving space. Easy Maintenance Almost no daily maintenance is required, and no special tools are needed for inspection. Few parts need to be disassembled.

　　The stacked filter core is composed of a set of discs with grooves on both sides. The intersecting points formed by the groove edges can intercept solid substances in the water. Due to the simultaneous surface interception and deep coagulation, the filtration effect is greatly improved.
Features:
1. Long service life: The high-tech plastic filter core is strong, wear-free, and corrosion-free. Years of industrial practical verification show that the filtration and backwashing effects will not deteriorate with use time.
High-efficiency backwashing: High-speed and thorough backwashing can be completed in about 7-15 seconds, and the backwashing water consumption is less than 0.5% of the filtered water.
Standard modularization: Standard modular system design, users can configure as needed, simple and flexible, with strong interchangeability.
Reliable operation and simple maintenance: Almost no daily maintenance is required, installation and operation are convenient, components are 100% factory-tested and trial-run, no special tools are required, and few spare parts are needed.
2. Precise filtration: Different precision filter discs can be selected according to water requirements, with various specifications such as 20 microns, 55 microns, 100 microns, 130 microns, 200 microns, and 400 microns, and a filtration ratio of more than 85%.
Thorough and efficient backwashing: Because the filter pores are completely opened during backwashing, coupled with the centrifugal jet action, a cleaning effect unattainable by other filters is achieved. Each filter unit backwashing process can be completed in just 10 to 20 seconds.
Fully automatic operation, continuous water output: Time and pressure difference control backwashing startup. In the filter system, backwashing is performed sequentially between various filter units and workstations. Automatic switching between working and backwashing states ensures continuous water output, low system pressure loss, and the filtration and backwashing effects do not deteriorate with use time.
Modular Design: Users can add or remove filter units in parallel as needed, offering flexibility, variability, and high interchangeability. It can flexibly utilize on-site corner spaces and is installed space-savingly according to local conditions.   `nbsp_tag
Easy Maintenance: Requires virtually no daily maintenance, inspection does not require special tools, and there are very few detachable parts.

The 3-inch stacked filter element consists of a set of grooved discs on both sides. The intersection points of the grooved edges can intercept solid substances in the water. Due to the combined effects of surface interception and deep coagulation, the filtration effect is greatly improved. At the same time, due to the characteristics of high-efficiency backwashing, fully automatic continuous operation, low self-water consumption, small footprint, and reliable operation of the stacked filtration system, the backwashing process of the filtration system is carried out alternately, and the automatic switching between the working and backwashing states ensures continuous water output, with low system pressure loss. Therefore, the technological advantages of the stacked filtration system are very obvious.
In order to achieve the automatic backwashing of the stacked filter, high-flow stacked filter stations are generally composed of multiple units.
*The filter unit is made of a high-pressure resistant polyamide shell reinforced with fiberglass material, and is secured with easy-to-open stainless steel clamps.
*The filter element frame is a complex and precise telescopic columnar structure, formed by a single injection molding. The hydraulic actuating mechanism is located inside the highly sealed columnar structure, which effectively prevents blockage and failure, and extends the service life.
*High-strength polypropylene stacked plates are pressed tightly in the filter element body to form a solid columnar filtration system, thus providing reliable filtration effects for various precision filtration requirements.
*The inlet and outlet pipes of the filter are made of pure plastic polyethylene pipes, which have better corrosion resistance.
Filtration Mode: In the filtration state, turbid water passes through the stacked plates from the outside of the filter element. Under the action of spring force and liquid force, the filtration stacked plates are pressed tightly together, and the impurity particles are retained at the intersection of the stacked plates. The filtered clean water flows out from the filter.