Zhengzhou Great Machinery Co., Ltd.  

Product Name: Plastic Recycling Granulating Extrusion Line Used Self-Cleaning Backflush Screen Changer Model NO.: GM-DP-BF series Belong to: Auxiliary Part of The Whole Extrusion Line Function: Pelletizing Line/Granules Making Machine Application: TPU ,PA,POM,PMMA Reaction Extrusion Trademark: Gmach Transport Package: Sea Worthy Packaging Specification: CE, SGS Origin: Zhengzhou Product Description Plastic recycling granulating extrusion line used self-cleaning backflush screen changerInordertoconsiderablyincreasethelifetimeofthefiltermediaGMACHoffersautomaticbackflushscreenchangers.Working principle(backflush process)of this double piston backflush screen changer with 4 screen cavities fortwin screw extruderThesesystemsworkasfollows:Whenapre-definedpollutiondegreeisreached,thebackflushingautomaticallystarts.Thenthecontaminationsfromthescreenpackareledoutofthemachineviaaspillway.Thecontaminatedbackflushmassleavesthemachinebymeansofheatedbackflushoutletpipeswhichareinstalledatthescreenchangerhousing.Therethesmallquantitymayberemovedorcollected.Withthe-channelscreenchangersadditionalslidevalvesareusedatthebackflushchannels.Thereisnointerferenceoftheprocessduringbackflushing.Features included1,Continuouslyworkingmeltfilter2,Four working stations3,ventinggroovecandischargethegasmixedintherawmaterial4,nointerferenceduringtheprocessofbackflushing5,thescreencleaningreached85%6,longlifespanofthefiltrationscreenpack/mesh,itowningtoupto100timesbackflushingatmost.screen change procesThe screen changer and gas venting process of this kind of Automatic backflush screen changer with four working positions for plastic extrusion machineThe following process is based on standing face to the screen changer and extruderone rod is pushed out on the left side of the housing of the screen changer by hydraulicallythe blocked filter screen pack is removed and replaced by a fresh onethe rod is pushed into the housing of the screen changerthis rod is pushed out on the rignht side of the housing of the screen changer by hydraulically.the other one blocked filter screen pack on this rod is removed and replaced by a fresh one.the other rods repeat the above stepsThe gas venting systen begins to work when the rod is pushed into the housing of the screen changer, and the following picture show the process of gas venting of this type of dual rods continuous extrusion screen changer for polymer melt filtration.Finished products showMain application fields of Automatic backflush screen changer with four working positions for plastic extrusion machineforcompounding,semi-finishedproduction,recycling,manufacturingoffibers,polymerization,filmextrusionforfullyautomaticproductionprocessesTechnical dataTypeScreenD&AOveralldimensionHeatingpower(KW))Output(kg/h)Dia(mm)Filtrationarea(C)L1L2L3GM-DP-BF-12010078x422018011602.4/3.2260-760GM-DP-BF-135115104x425020512803.5/4.7400-1100GM-DP-BF-155135143x427022514205.0/7.2600-1400GM-DP-BF-160145165x431026016008.2/11.1800-2000GM-DP-BF-170150177x437031017509.4/12.71350-3000GM-DP-BF-195175240x4380320190010.2/13.81600-3800GM-DP-BF-220200314x4410350210013/17.51800-4500GM-DP-BF-250230415x4460405276015/21.52000-5000Gmach quality inspectionPacking and shippingGmach service