新型高效旋流沉砂池

1、新型高效旋流沉砂池NewandHigh-EfficientRotationalFlowDesiltingTank一、概述SummaryBXJS系列除砂机是本公司在广泛深入研究目前国内外各种形式的沉砂池除砂机的基础上，经优化设计而开发出的第二代沉砂池除砂设备。这种新型的组合式沉砂池除砂设备，沉砂效果好，除砂可靠，砂水分离效率高，整个系统采用PLC自动控制，管理方便。TheBXJSseriesgritcatcherisdevelopedbasedonourresearchandimprovementofsimilardomesticandforeignequipment.Itisoursecond

2、generationgritremovalequipment.Thecombinationaldesignisveryeffective,reliableandefficient.ThesystemutilizesPLCautomaticcontrol,whichmakesitveryeasytooperateandmaintain.BXJS二XIOOO水处理量m3/dThroughputCapacity沉砂池型号DesiltingTankType二、工作原理OperatingPrinciple污水沿切线方向进入沉砂池，在旋转的搅拌桨作用下，固体砂粒受离心力、重力、浮力及流体阻力共同作用，开始

3、沉降。旋流中粒度、密度大的砂粒靠近池壁和池底，最后沉落到池中心的砂坑内。同时，由于搅拌桨的适中旋转，在沉砂池的中心产生一个轻微向上的速度（不影响外圈砂粒的沉降和池边向下的水流方向）使较轻、较小的物体在池中心部上升，最后随出水一起排出。搅拌桨产生的离心力则把已沉降的较重砂粒推入池子下部的沉降段。Oncethewaterentersthegrit-settlingtank,undertheactionofthestirringrakeandtheeffectsofcentrifugalforce,gravity,buoyancyforceandflowresistance,thegritbegin

4、stosettle.Largeandheavygritflowstothesidewallandbottomofthetankandeventuallyfallstothegritpitatthecenterofthetank.Theactionofthestirringrakealsocreatesasmallupwardflowatthecenterofthetank,whichliftssmallandlightparticlesthateventuallygetsdischargedwiththewater.Theupwardflowwillnotinterfereinthedownw

5、ardmovementofthegritintheouterregionofthetank.三、结构及特点ConstructionandCharacteristics新型高效旋流沉砂池成套设备供货包括：电机，减速机，风机，浆片驱动管，浆片，提砂系统，砂水分离器，其他辅助设备等，见图1。ThesuppliesofthecompletesetsoftheNewandHigh-EfficientRotationalFlowDesiltingTankconsistofmotor,reducer,blower,bladedrivenshaft,blade,gritliftingsystem,grit-w

6、aterseparatorandotherauxiliaryequipments,etc.Figure1.GritCatcherr+|Q|i軌3EhawhSolcncidVlnAirInspfatorjiTuhfMletuidErfiauil-Tdbt廨$kifTJie|WK豁|丄h旳问AirTubeAirScourSdlmoidValve*yW45)f2.5AthspiratryRoetjBlowerl*ww_y/EiihaustHufflerIhrottlet*f159x3DrainTu诞&卄番Epanal雪/SystemControlCatintt于Outdnortainlegs业岂Mt

7、f1Q8K4RohtorDe*i|+ingtankFigure1GritCatcherr+|Q|i軌3EhawhSolcncidVlnAirInspfatorjiTuhfMletuidErfiauil-Tdbt廨$kifTJie|WK豁|丄h旳问AirTubeAirScourSdlmoidValve*yW45)f2.5AthspiratryRoetjBlowerl*ww_y/EiihaustHufflerIhrottlet*f159x3DrainTu诞&卄番Epanal雪/SystemControlCatintt于Outdnortainlegs业岂Mtf1Q8K4RohtorDe*i|+ing

8、tankFigure12.进水挡板3.出水过水堰图1新型高效旋流沉砂池配置CompositionofNewandHigh-EfficientRotationalFlowDesiltingTank1.池体4.电机5.减速机6.螺旋桨驱动管7.螺旋桨8.集砂斗钢盖板9.气提头10.提砂管11.气提管12.气冲管1.Tank5.Reducer9.InspiratoryTubeEnd10.2.InletBaffle6.Propeller-drivenTube7.Propeller8.SteelCoverofGritBucketGrit-liftTube11.AirInspiratoryTube12.A

9、irScourTube3.WaterWeirforOutletWater4.Motor图2沉砂池构造示意图Figure2AdvancedGritRemovalSystemStructureDiagram新型高效旋流沉砂池系统可达到如下除砂效率：大于50筛目的砂粒去除率为95%。50筛目和70筛目之间的砂粒去除率为85%。70筛目和100筛目之间的砂粒去除率为65%。TheNewandHigh-EfficientRotationalFlowDesiltingTankhasthefollowinggrid-catcherefficiency:Grid-catcherrategreaterthan5

10、0meshsieveis95%.Grid-catcherratebetween50and70meshsieveis85%.Grid-catcherratebetween70and100meshsieveis65%.独特的水力设计：与目前国内旋流沉砂池普遍采用的270进出水方式相比，本沉砂池采用360直进直出的方式，来水通过一个斜坡切向进水，在导流板和压水板的作用下，水流在沉砂池内完整地形成360旋流，不会发生断流。因而其水力条件更为改善。Uniquehydraulicdesign:Comparedwiththecurrentgeneralwayof270inletandoutletwaterb

11、ythedomesticrotationalflowdesiltingtank,thistanktakesthemethodof360straightinandout.Theinletwaterflowstotheoutletwaterthroughaslopeandtheflowformsacomplete360rotationalflowinthedesiltingtankundertheeffectofdeflectorplateandwaterpressurizingplatesothatthewaterdoesntcutoff.Thereforeitshydraulicconditi

12、oncanbebetterimproved.可靠的提砂方式：系统采用气提这一简单可靠的排砂方式，依靠气水混合液与水之间的比重差将砂粒排出。虽然气提的方式和砂泵提砂相比在提升高度上受到限制，但这一限制在实际应用并无什么不利影响。而其具有的一个优点是在气提之前可以实现砂粒的气洗，可防止集砂斗内的砂粒板结，同时还可将附着在砂粒上的有机物选出，从而方便砂粒排出后的后续处理。Reliablewayofgritlifting:Simpleandreliable,thesystemtakesthemethodofair-lifttoremovethegrit,takingadvantageoftheprop

13、ortiondifferencebetweenair-watermixtureandwater.Theheightliftedbyairislimitedcomparedwithgritliftingbysandpump,butthislimitdoesnothaveanynegativeeffectsinpracticaloperation.Thegritcanbeair-scouredbeforeair-lift,whichcanpreventthegrithardeningingritbucketandpickouttheorganicsadheredtothegrit,simplify

14、ingthefollowingtreatmentaftergritremoval.有机物分离：新型高效旋流沉砂池独特的水力和搅拌浆片设计，不但可以高效地去除砂粒，同时可以高效地将有机物从砂粒中分离出来，这是目前市场上流行的钟式沉砂池所无法达到的。Separationoforganiccompounds:TheuniquehydraulicandstirringbladedesignoftheNewandHigh-EfficientRotationalFlowDesiltingTankcannotonlyremovethegrit,butalsoseparateorganicsoutofgrit

15、high-efficiently,whichisimpossibleforthepopularbell-typedesiltingtankinthecurrentmarket.四、规格及技术参数SpecificationsandTechnicalParameters设计流量沉砂池直径沉砂池深度砂斗直径砂斗深度1型号(万m3/d)GritChamberGritChamberGritbucketGritBucketModelDesignflowDiameterDepthdiameterDepth(lOOOOrWd)(m)（m）（m）(m)BXJS3.80.381.831.120.911.52BXJS9.50.911.52BXJS15.21.522.441.220.911.52BXJS26.52.653.051.451.521.68BXJS45.54.553.661.521.522.03-a-i-BXJS75.87.584.881.681.522.08iiiiihiBXJS11411.45.491.981.522.13BXJS18931.522.44BXJS26526.57.322.131.832.4