Home > Knowledge > Content

Introduction to automatic backwashing filters

Apr 24, 2019

Automatic backwash filters are widely used in metallurgy, chemical, petroleum, and electric power fields. Filtration of circulating water, such as industrial wastewater, is an advanced, efficient and easy to operate fully automatic filtration device.

The filter is mainly composed of high-quality carbon steel or stainless steel cylinder, special structure stainless steel wedge filter, water flow guiding valve, differential pressure controller, electric control box and sewage device. When the filter is in operation, the water flow guiding valve is in an open state, and the water flow enters the filter from the inlet, is filtered through the filter mesh, and flows into the outlet. The filter uses differential pressure control and positioning control to automatically clean the filter. When the differential pressure of the inlet and outlet of the filter reaches the set value or the timer reaches the preset time, the electric control box sends a signal, the blowdown valve is opened (the water flow guiding valve is in the open state), and the water flushing the impurities adhering to the inner wall of the filter screen is further Flushing out, when the water flow guiding valve is in the fully closed state, the water flow is forced to enter the outside of the filter net from the filter inlet section mesh, most of the clean liquid flows out from the outlet, and a part of the clean liquid enters the filter net from the outside of the filter screen (because The system will be in a state of pressure relief, the internal pressure of the filter is less than the outside pressure), so that the filter is backwashed. The special structure of the stainless steel wedge filter makes the spray effect inside the filter. Any magazine is from the smooth inner wall. Washed up. When the pressure difference between the inlet and outlet of the filter returns to normal or the timer setting time is over, the electric blowdown valve is closed and the water flow guide valve is opened. The entire flushing process system works properly without downtime.www.inocofiltration.com