• Category： Industry News
• Author：
• Source：
• Release time：2018-10-27 17:59
• Pageview：

【Summary】 The filter is composed of a cylinder, a stainless steel filter screen, a drainage section, a transmission device and an electrical control section. When the filter is in operation, the water to be filtered enters through the water outlet filter (15 pieces), flows through the filter screen, and then enters the pipeline required by the user through the outlet for the process cycle. The particles and impurities in the water are retained inside the filter screen. This continuous cycle leads to an increasing number of particles being retained, causing the filtration speed to slow down. Meanwhile, the sewage at the inlet keeps flowing in, resulting in smaller and smaller filter holes. As a result, a pressure difference is created between the inlet and outlet. When the pressure difference reaches the set value, the differential pressure transmitter sends an electrical signal to the controller, and the control system starts the drive motor to rotate the shaft through the transmission components. At the same time, the drain port opens, and the water is discharged from the drain port. After the filter screen is cleaned, the pressure difference drops to the minimum value, and the system returns to the initial filtration state, and the system operates normally. The filter is composed of a housing, multi-element filter elements, backwashing mechanism, and differential pressure controller, etc. The transverse partition plates inside the shell divide the inner cavity into upper and lower chambers. The upper chamber is equipped with multiple filter elements, which makes full use of the filtration space and significantly reduces the volume of the filter. The lower chamber is installed with backwash suction cups. During operation, the turbid liquid enters the lower chamber of the filter through the inlet and then passes through the holes in the partition plate into the inner cavity of the filter element. Impurities larger than the gap of the filter element are retained, and the clean liquid passes through the gap to reach the upper chamber and is finally discharged from the outlet. The filter 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 inside the filter, causing the pressure difference between the inlet and outlet to increase to the set value, or when the timer reaches the preset time, the electric control box sends a signal to drive the backwashing mechanism. When the backwash suction cup port is directly aligned with the filter element inlet, the drain valve opens. At this point, the system depresses and drains water. A negative pressure zone appears between the suction cup and the inner side of the filter element, where the relative pressure is lower than the water pressure on the outer side of the filter element. This forces part of the clean circulating water to flow from the outer side of the filter element to the inner side. The impurity particles adsorbed on the inner wall of the filter element flow into the suction cup with the water and are discharged through the drain valve. The specially designed filter screen creates a jetting effect inside the filter element, and any impurities will be washed away from the smooth inner wall. When the pressure difference between the inlet and outlet of the filter returns to normal or the set time of the timer ends, throughout the entire process, the material flow does not stop, the backwashing water consumption is low, and continuous and automated production is achieved. Filters are widely used in the fields of metallurgy, chemical engineering, petroleum, papermaking, medicine, food, mining, power, and urban water supply. Such as the filtration of industrial wastewater and circulating water, the regeneration of emulsions, the filtration and treatment of waste oil, the continuous casting water system and blast furnace water system in the metallurgical industry, and the high-pressure water descaling system for hot rolling. It is an advanced, efficient and easy-to-operate fully automatic filtration device.