螺旋闸门用于建材、冶金、矿山、电力、化工、玻璃、轻工、粮食等行业的库顶、库底及进出口等。是控制流量变化较大，启动频繁，切断迅速的理想设备。Thisvalveiswidelyusedatthetopandbottomofstorehouseandcarryportinmetallurgical,mining,buildingmaterial,food,chemicalindustriesetc.Itistheidealequipmenttocontrolagreatchangingflow,toopenandclosefrequentlyandtostopquickly.螺旋闸门（插板阀）结构特点：Structurecharacteristic:结构简单、操作灵活、重量轻、无卡阻、切断快，特别适用于各类无粘度的固体、粉料及小于Φ10mm的颗粒料，晶粒料的输送及流量调节，安装不受角度限制，操作方便，能随时调节开度。该阀门有手轮和链轮操纵两种操作形式，I型为手轮，II为链轮。单向和双向两种结构形式，LZD为单向、LZS为双向。Thisvalveissimpleinstructure,handytooperate,lightinweight,non-obstructiveandquicktostop.Itissuitabletobeusedtocarryallkindsofsolidmaterial,particleandcrystalparticlewhosediameterisbelow10mmandtoadjusttheflow.Itcanbeinstalledatanyangleandoperatedhandily.Thesizeofitsgatecanberegulatedatanytime.Thisvalvehastwotypeofoperation.Oneismanualwheeloperation;theotherischainwheeloperation.Ⅰmeansmanualwheel.Ⅱmeanschainwheel.Thevalvehastwotypeofc***tructionLZDissignaldirectionandLZSisdoubledirection.螺旋闸门（插板阀）工作原理：Workingprinciple主要由框架、闸板、丝杆、螺母等零件构成，用手转动手轮使丝杆带着丝杆螺母和闸板沿水平方向往复运动，达到闸门的启闭目的。Itismainlymadeupofframe,gateboard,screwpole,nutetc.Rotatethehandwheelbyhand,thenthescrewpoledrivesthenutandgateboardmoveinhorizontaltoandfrotoopenorclosethevalve)