Water Strainer

DL Series Cleaning Automatic Water-strainer (electric water-strainer) is the most advanced at present in our country. It with small volume, facile installation, long operation life, good reliability, low press loss, high automatization & filter precision, facile back flushing and non-burnt screen working long terms etc. characteristics. 1. Structure and operation Principle DL Series Cleaning Automatic Water-strainer (electric filter) are made of actuator, tube, screen, back flushing assembly etc.. Screen inner has been separated into eight (8) grids, unfiltered water flow into screen inside from under inlet of the equipment, then through screen wall into space between tube and screen, Clean water was discharged from over outlet of the equipment, and dunghill was blocked in the screen inside. When discharging open blowoff valve and start up the actuator, turn screen in clockwise direction and aim each grid at discharge, dunghill resorted in screen will be discharged through blowoff pipe with water. 2. Technical Parameters 1. design pressure: 0.6MPa 2. operation pressure: 0.35MPa 3. hydraulic test pressure: 0.8MPa 4. design temperature: ≤100°C 5. operation temperature: ≤80°C 6. operation media: fresh water (sea water should be noted if required) 7. rate through area: 5-8 multiple 8. filter precision (mesh diameter) :7mm 9. screen resistance: ≤5KPa 10. material 10.1 screen core, running parts and pipe plate etc. adopt stainless steel 316L 10.2 shell adopts carbon steel with inner rubber lined 11. electric actuator: QB3-50-1 3. Scope of Supply (for single unit) 1. auto back flushing strainer body 1 Set 2. electric actuator 1 Set 3. electric blowoff valve 1 Set 4. diff. press. controller 1 Set 5. system control cabinet 1 Set 6. flanges and fasteners (bolts and anchor bolts included) 4. Operation Style: Auto & Manual Automatic clean style adopts diff. press. control and time control. Strainer starts to clean automatically under diff. pressure over 7KPa (adjustable). System could clean strainer automatically one time from 6 to 8 hours (adjustable) when diff. press. is not large. Put back flushing switch on the panel into “auto” position, the system run into auto operation style. Time and interval of each back flushing could be control by setting time relay in cabinet. Clean frequency could be set from 6 to 8 hrs. generally, flushing time of each grid is one (1) minute. Diff. press. switch could be set at the same time, when the waste increase suddenly, diff. pressure overtop the set value 7KPa (adjustable), switch start to operate touch off the cleaning control fittings and start to back flush automatically. If the diff. press. still overtop the set value after completing one time back flushing, Automatic Cleaning Water-strainer (electric filter) could run into back flushing again until the diff. pressure under the setting value. Manual operation style: Put switch on the panel into “manual” position, open electric blowoff valve by electric operating, and start to back flush, the flushing time could be set by manual work. When switch in “manual” position, actuator of back flushing water strainer (electric filter) could drive back flushing equipment to back flush according to the setting time, which less than 10 minutes generally. When the switch was push into the “auto” status, equipment will into the auto operation style has been set. Otherwise, both actuator and electric blowoff valve should be set with manual fittings, which could clean in manual style in case of motor lose power supply or damaged status. 5. Installation and Maintenance Remain anchor bolt holes to fasten equipment with anchor bolts. Maintain equipment during great or small repair of the unit. Check control system electric components termly during operation period, if found damaged parts replaced it immediately.