Will: Automatic backwash filter realizes full automation on the basis of ordinary backwash filter, automatic filtering and automatic backwash cleaning. In addition to pressure difference control, the filter of this model can also be controlled periodically, and a certain pressure difference or time can be set according to the need. In the operation of the equipment, when the pressure difference or time value is reached, the electric actuator works automatically and the electric discharge valve opens automatically, so as to realize automatic reverse cleaning and discharge. The cleaning and discharging process is completed together, without stopping the flow of water. Structure form: The full automatic backwash filter consists of a cylinder, a stainless steel screen, an impurity collection section, an electric impurity discharge outlet, an electric water flow steering butterfly valve, a testing mechanism, an actuator and a control box. According to the installation type and flow direction are divided into two types: straight type and Angle type. Working principle: 1. Regular backwash and drain The time can be set to 2-24 hours. When time to regularly, an electric actuator to open the drain valve, filter for drainage 30 to 60 seconds, and then the electric actuators will shift to butterfly valve cartridge rotate 90 ° to stop, change the flow path, backwash drainage 30 to 60 seconds. After the butterfly valve is reset, continue to drain for 3-5 seconds, then close the drain port. 2. Pressure difference control of sewage discharge The action value of the pressure difference controller can be set as 0.03-0.07MPa. When the pressure difference between front and back of the filter reaches the set value of the pressure difference controller, the action of the pressure difference controller, the filter blowdown valve opens and ends in 30-60 seconds. After the butterfly valve is reset, continue to drain for 3-5 seconds, then close the drain port. 3. Manual control Through the button on the control box, the pollution can be directly controlled.
