风门气动减压装置的应用解析

风门气动减压装置的应用解析摘要：井下风门在通风负压的作用下能够自动关闭，对于负压大的地点，风门关闭迅速，力量大，容易挤伤通行人员。因此，我们设计一种能够减少负压作用力的装置安装在风门门轴一侧，当风门关闭时，此减压装置起到缓慢关闭风门的作用。Pickto:mineairdoorinundertheactionofnegativepressureventilationcanautomaticallyshutdown,forthelocationofthenegativepressurebig,airdoorclosedquickly,strength,easyagainsttraffic.Therefore,wedesignadevicethatcanreducethenegativeforcesmountedonthethrottleshaftsideofthedoor,whenthethrottleisclosed,thepressure-reliefdeviceshavetheeffectofslowclosethedamper.关键词：井下风门；通风负压；作用Keywords:downholethrottle;Negativepressureventilation;role一、风门气动减压装置工作原理：通过空气的压缩和弹簧的缓冲作用起到减压的目的。当风门开启时减压装置通过尾部弹簧将轴杆弹起，在弹起的过程中通过尾部两个进气孔进气，一大一小，大孔作为主要出气孔。风门关闭时，风门被轴杆顶住，通过轴套腔内的压缩空气缓慢出气。主要原理就是其中的主出气孔上面设置了一个防出气装置（软质的垫片）遮堵出气孔，形似风筒防逆流装置，在风门关闭过://程中推动腔内的压缩空气将垫片堵住出气孔，而从另一小进气孔缓慢出气。通过此方式可以避免风门由于负压作用快速关闭，从而形成缓慢关闭状态。结构示意图见下图：Apressure-reliefdevices,throttlepneumaticworkingprinciple:bythecompressionofairandspringcushionhavethepurposeoftherelief.Whentheshutteropenspressure-reliefdevicesbytailthespringshaftleverup,intheprocessofbouncethroughtailintake,airinlet,alargeandasmallholeastheprimaryairflow.Airdoorisclosed,thethrottleshaftlevertoresist,compressedairthroughtheshaftsleevecavityisslow.Mainprincipleisoneofthemainairflowsetupaboveapunchingdevice(softgasket)blockedairflow,similartoramantirefluxdevice,pushintheprocessofairdoorclosedcavitycompressedairtoshimblockairflow,andasmallinletholeslowlytogetoutfromtheother.Throughthiswaycanavoidbecauseofthenegativepressureeffectofairquicklyshutdown,formingaslowlyclosed.Structurediagramasshowninbelow:二、风门气动减压装置作用：通过风门缓慢关闭的过程，从而避免由于负压大迅速撞击风门，造成风门变形、开裂，风门墙体、墙皮开裂、掉渣，影响风门寿命，影响质量和外观。利用此风门减压装置还能有效地避免因风门负压大挤伤人员、造成人身事故等。因此，建议对井下负压较大的地点试装此风门减压装置，推广应用成功后，大批量加://工生产此装置，广泛应用到井下，以利于安全生产。2,throttlepneumaticpressure-reliefdevicesfunction:throughthethrottleslowlyclosingprocess,toavoidimpactdamper,rapidlybecauseofthelargenegativepressurecausedbyairdoordeformation,crack,airdoorwall,wallcrack,slag,affectingtheservicelifeofairdoor,affectthequalityandappearance.Usingthethrottlepressurereliefdevicecaneffectivelyavoidairinletnegativepressurebigcrowdedinjuryworkers,causingpersonalinjuries,etc.Therefore,itisrecommendedthatthelocationforthedownholepressurelargertestandthethrottlepressurereliefdevice,afterthesuccessofthepopularizationandapplication,thisdevice,processingproductioninlargequantitieswidelyusedtomine,forsafetyproduction.三、安装难点：风门气动减压装置与风门门框部位的连接可以用焊接好的扁铁和螺栓、螺帽连接，关键部位就是减压装置轴杆上的橡胶头与风门门扇部位的接触，接触点过小对风门门面依然存在撞击的破坏作用，可以考虑在门面撞击部位焊接与橡胶头相包容的坚固物体。另外撞击点的力不是垂直作用于风门门面，对风门门面的摩擦作用力会增强，对门面依然存在破坏作用，轴杆上的橡胶头磨损程度也相应变快，增加更换轴杆上橡胶头的频率。因此，应考虑采用合理的受力方向，保证风门气动减压装置与风门门面之间的作用力处于垂直作用状态，可以采用扇形角度的风门气动减压装置，轴杆接头与风门门面接://触点之间作用力始终处于垂直状态，以维持作用力的稳定和受力的平衡状态。以下是风门气动减压装置组成结构及安装位置结构示意图。3,installationdifficulties:pneumaticpressure-reliefdevicesconnectedtothedamperframepartsofthethrottlecanuseweldinggoodflatironandboltsandnutsconnection,keypartsareonthepressure-reliefdeviceshaftrodrubberheadandshutterdoorleafareaofcontact,thecontactpointistoosmalltothrottlethefacaderemainsofimpactdamage,canconsidertohitpartsofbodyweldingandrubberheadinclusiveinthefacadeofsolidobjects.InadditiontheimpactpointisnotperpendiculartotheforceACTSontheairdoorfacade,thefrictionalforceofdamperappearancewillenhance,damagingeffectsoffacaderemainsontheshaftrodrubberheadweardegreealsoquickens,accordinglyincreasethefrequencyofchangeontheshaftrodrubberhead.,therefore,shouldconsidertousereasonableforcedirection,ensurethrottlepneumaticpressure-reliefdeviceanddamperforcesinastateofverticaleffectbetweenfacade,fan-shapedAngleofinletpneumaticdecompressiondevicecanbeused,withthrottleshaftrodjointappearanceremainthestateofverticalforcebetweencontactpoint,maintainthestabilityofforceandstressstateofbalance.Belowisairdoorpneumaticpressurereliefdevicecompositionstructureandtheinstallationlocationstructurediagram.://四、安装重点：风门气动减压装置的轴杆上至少须添加两道密封圈，保证与轴套接缝间密不透风，密封圈镶嵌在轴杆上车丝的凹槽内，紧紧卡住轴杆。4,installationkey:throttlepneumaticpressurereliefdeviceontheshaftleverofmustaddatleasttwoseal,impenetrablebetweenassuranceandshaftsleeveseams,sealingringinlaidinwirerodontheslots,tightlystuckshaftrod.