Structure, working principle and application characteristics of water filter

　　 Water filter It consists of a cylinder, stainless steel filter screen, drainage part, transmission device and electrical control part, and is an easy-to-operate, efficient and advanced automatic filtering device. When the filter is working, the water to be filtered enters from the inlet, flows through the filter screen, and the particulate impurities in the water are retained in the filter screen, and then enters the required pipeline through the outlet for process circulation. With this continuous circulation, more and more retained particles are produced, and the filtration speed becomes slower and slower. However, the imported wastewater continuously enters, and the filter holes become smaller and smaller, thus generating a pressure difference between the inlet and the outlet. When the pressure difference reaches the set value, the pressure differential transmitter transmits an electrical signal to the controller, and the controller starts the drive motor to drive the shaft to rotate through the transmission components. At the same time, the drain port is opened, and the impurities are discharged from the drain port. After the filter screen is cleaned, the pressure difference drops to a smaller value.

　　 Water filter Structure: The water filter consists of a housing, a multi-element filter element, a backwashing mechanism, and a pressure controller. The diaphragm in the housing divides its inner cavity into an upper cavity and a lower cavity. The upper cavity makes full use of the filtration space and is equipped with multiple filter elements, greatly reducing the size of the filter; the lower cavity is equipped with a backwashing suction cup. In operation, the turbid liquid enters the lower cavity of the filter through the inlet and then enters the inner cavity of the filter element through the baffle hole. The purified liquid reaches the upper cavity through the gap, and impurities larger than the gap between the filter elements are retained and finally discharged from the outlet.

　　Working principle of water filter: The filter element adopts a high-strength wedge-shaped filter screen, and automatically cleans the filter element through pressure difference control and timing control. When impurities accumulate on the surface of the filter element in the filter, causing the inlet and outlet pressure difference to increase to the set value, or the electric control box sends a signal to drive the backwashing mechanism, when the timer reaches the preset time. The drain valve opens, and when the backwashing suction cup is aligned with the filter element inlet, the system releases pressure and drains water, forcing part of the net circulating water to flow from the outside of the filter element into the inside of the filter element. A negative pressure zone with a relative pressure lower than the water pressure outside the filter element appears in the suction cup and inside the filter element. Impurity particles adsorbed on the inner wall of the filter element flow into the pot with the water and are discharged from the drain valve. The specially designed filter screen makes the inside of the filter element produce a jet effect, and any impurities will be washed away from the smooth inner wall. When the inlet and outlet pressure difference of the filter is restored to normal or the time set by the timer ends, the material continuously flows throughout the process, the backwashing water consumption is small, and continuous automated production is realized.

　　Application characteristics of water filter: 1, Water filter High filtration accuracy and stable effluent water quality. 2. Automatic backwashing can be achieved through its own retrieval and response functions, and can cope with unstable water quality fluctuations without manual intervention. 3. The water filter control system operates sensitively and accurately, with dual pressure difference and time setting functions, and can flexibly adjust the backwashing pressure difference or time setting according to different water sources and filtration accuracy. 4. Thorough cleaning, the filter screen can be completely restored to its original state, and can be used for life without replacement. 5. The water filtration equipment backwashes without interrupting normal water production, operates continuously, and is stable and reliable. 6. Short backwashing time, the backwashing water consumption is only 0.001 ~ 0.002% of the normal water output, saving water, electricity, and energy. 7. Water filters have a wide range of applications and can meet different raw water quality and water requirements.