隆金 气动钨钢耐磨双闸板阀，LJZ644W-10Q DN150 碳钢，法兰 售卖规格：1台

气动陶瓷/钨钢耐磨双闸板阀是我司在引进美国爱尔拉丁公司先进技术的基础上开发研制的，该阀主要用于燃煤电厂气力输送系统进料、出料、排气、切换等，也可用于钢厂、化工、造纸等其他行业，密封面为特殊耐磨陶瓷或钨钢(硬度可达60~90HRC)。该阀用于进料和排气时通常为单面密封防止积灰；用于出料时通常为双面密封，提高了阀门的使用寿命。该阀密封性能好，具有耐压，耐磨，耐冲击、使用寿命长等特点。采用气动控制，启闭灵活，可与进口产品相媲美。

LJ型双闸气锁耐磨阀（又称双闸板阀、双插板阀）SZ型采用双闸板，双面密封，密封圈采用具有极好的机械性能和耐磨性能的陶瓷或者钨钢，硬度可达60~90HRC，解决了密封面因物料冲刷而易被冲蚀、寿命不长的问题，为用户带来理想的使用效果和经济效益，有利于设备的检测和运行调节，从而使整体运行的安全性、经济性明显提高。

LJ double-disc anti-abrasion gate valve uses double discs, double-sided seal, sealed with ceramic, and tungsten steel, with excellent mechanical and wear-resistant properties and hardness up to 60 ~ 90HRC. Such design solves the short life time issue due to sealing surface abrasion and erosion by continuous scouring material mixed with compressed air.

工作原理 Principle of Operation

当气源从上进气口通入时，阀杆带动阀板向下运动，阀门关闭。当气源从下进气口通入时，阀杆带动阀板向上运动，阀门开启。阀板与阀座之间加载弹簧，弹簧弹力始终使阀板压向阀座保证阀门的密封性，又容许阀板在垂直上下方向移动，这有助于补偿阀门零件的热胀冷缩，并能克服任何背压变化对密封的影响与防止颗粒介质进入两密封面之间。在启闭过程中，阀板能产生自转，使得密封面之间产生研磨、抛光作用，而且由于阀体对通道偏心，在开启排卸物料时，会产生涡流，形成的物料旋涡会自行清扫阀门内腔。所有的这些特点，使得这种阀门具有超长的使用寿命，为您的系统安全运行提供了可靠的保证。

When the compressed air enters from the upper intake port, the valve stem drives plate to movedownward, the valve closes. And air enters from the down intake port, stem drives plate to move upward, the valve opens. Spring is added between the plate and seat to ensure they always touch tightly, at the same time enable plates move gently vertically. Such design could compensate for thermal expansion and contraction of the valve parts, and can overcome any influence of fluctuating back pressure on the seal and prevent particulate medium  entering sealing surfaces. In the process of opening and closing, valve plates could self-rotate, as a result sealing surfaces could be grinded, and polished. Additionally, eddy current would be produced due to inlet/outlet channel is off centering to valve body, and such eddy would purge the valve cavity automatically. All these characteristics contributes to the superior long life time of valve, providing a reliable guarantee for your system.

 料口全流通无阻挡物，有压缩空气自动吹堵装置，卡灰、积灰现象少。

 耐磨性好，使用寿命长。

 可任意位置、角度安装。结构紧凑，安装方便。

 密封圈可更换，节约了成本。

 高温场合使用效果好。

• No barrier in inlet/outlet port, compressed air automatic blowing valve cavity, less fouling phenomenon.

• Wear-resistance and long service life.

• Arbitrary installation position and angle. Compact structure, easy installation.

• Seals can be replaced, cost savings.

• Good effect of high temperature applications. (Max 500 Cent degree)

参数名称

Parameter 值

Value

公称通径

Nominal Diameter DN50-DN400

公称压力

Nominal Pressure 1.0MPa

气动执行器工作压力

Actuator Working Pressure 0.4-0.6MPa

适用温度

Applicable Temperature ≤200℃（Max ≤450℃）

适用介质

Applicable Media 粉煤灰、灰渣、干粉尘、固体颗粒等磨损、腐蚀性物料

Fly ash, ash and slag, dry dust, solid particles, and other abrasive and corrosive materials

一、适用范围 Applications 

用于热电厂干灰系统仓泵进、出料阀、平衡阀、排气阀、排堵阀，管路切换阀和灰库卸灰阀，也可用于矿山、造纸、化工、制药等各类有磨损的干粉尘、或者粉尘空气混合物等介质的管道上做启闭之用。 

For thermal power plant fly ash handing system (as inlet valve, outlet valve, vent valve, exhaust valve, pipeline switching valve and discharging valve). Can also be used for mining, paper, chemical, pharmaceutical powder, and powder-air mixture or other abrasive media.